IBM FlashSystem V840 Enterprise Performance Solution

IBM Redbooks Product Guide


Abstract

The IBM® FlashSystem™ V840 Enterprise Performance Solution delivers high performance, efficiency, and reliability for shared enterprise storage environments, while simplifying data management, improving data security, and preserving your investments in storage with advanced software-defined storage.

Updates as of 07/15/2014 to incorporate FlashSystem Release 1.2 functionality

Contents


Storage capacity and performance requirements are growing faster than ever before, and the costs of managing this growth are depleting more of the IT budget. IBM® FlashSystem™ V840 Enterprise Performance Solution (FlashSystem V840) has changed the economics of today's data center by eliminating storage bottlenecks, and its software-defined storage features simplify data management, improve data security, and preserve your investments in storage.

IBM FlashSystem V840 flash technology and software-defined storage are available in one solution in a compact 6U form factor. FlashSystem V840 improves business application availability and delivers greater resource utilization so you can get the most from your storage resources, and achieve a simpler, more scalable, and cost efficient IT Infrastructure. Using IBM Storwize® family functions, management tools, and interoperability, this product combines the performance of FlashSystem architecture with the advanced functions of software-defined storage to deliver performance, efficiency, and functions that meets the needs of enterprise workloads demanding IBM MicroLatency™ response time. Figure 1 shows the IBM FlashSystem V840 product.
Figure 1. IBM FlashSystem V840 Enterprise Performance Solution

Did you know?
  • FlashSystem V840 is an all flash array that can accelerate mission-critical applications.
  • With the Real-time Compression feature, FlashSystem V840 can increase the effective capacity of your flash storage up to 5x, decreasing the cost for effective capacity up to 80%.
  • Up to four FlashSystem V840 building blocks may be clustered into a single storage system, multiplying performance and capacity with each addition.
  • The new IBM FlashSystem V840 Control Enclosure (9846-AC1 or 9848-AC1), includes use of the compression accelerator card, an optional hardware feature, which accelerates Real-time Compression performance up to twice the IOPs and 3.5x the compression acceleration.
  • FlashSystem V840 provides IBM Easy Tier® 3rd Generation capabilities to allow for up to three tiers of storage.

Product Guide topics

  • FlashSystem V840
  • FlashSystem V840 highlights
  • FlashSystem V840 components
  • Product specifications
  • Options and features codes
  • Network cables and UPS
  • Encryption
  • System management and web interface
  • Supported platforms
  • Physical and electrical specifications
  • Software and licensing
  • Warranty information and upgrades
  • IBM Global Financing
  • Related publications and links

FlashSystem V840

FlashSystem V840 is a rack-mount shared flash storage device that is based on enterprise multilevel cell (eMLC) flash technology. It provides macro efficiency with 40 TB of protected capacity in a 6U form factor, enterprise reliability through Variable Stripe RAID™ and two-dimensional flash RAID, and extreme performance with MicroLatency. FlashSystem V840 provides advanced data services, including business continuity with replication services, data protection with FlashCopy services, and higher storage efficiency with thin provisioning, Real-time Compression, IBM Easy Tier, external virtualization, and space-efficient copies. The FlashSystem V840 baseline configuration is composed of the following components:
  • Two FlashSystem V840 Control Enclosures
  • One FlashSystem V840 Storage Enclosure

FlashSystem V840 provides the performance of IBM FlashSystem technology to ensure effective data management and protection with the following benefits:
  • Extreme performance: Enable businesses to unleash the power of performance, scaling, and insight to drive services and products to market faster.
  • MicroLatency: Deliver microsecond-level response time to accelerate critical applications and achieve competitive advantages.
  • Macro efficiency: Efficiency that is driven by consolidation of hardware and software, power and cooling savings, and data efficiencies of snapshots, thin provisioning, and advanced copy services.
  • Enterprise reliability: Durable and reliable designs that use enterprise class flash with remote mirroring to provide business continuity.



Component overview

This section describes the components of FlashSystem V840.

FlashSystem V840 Control Enclosure

The FlashSystem V840 Control Enclosure is a 2U rack mount unit that provides the primary management interface for the FlashSystem V840 Storage Enclosure and the host interface configuration. The FlashSystem V840 Control Enclosure Fibre Channel interfaces support Fibre Channel Protocol (FCP) only.

The Control Enclosure includes integrated AC power supplies and battery units, which supplies power to the Control Enclosure in the event there is a sudden power loss or failure, to correctly commit all transactions to the storage medium.

IBM FlashSystem V840 Storage Enclosure

FlashSystem V840 Storage Enclosures are 2U rack-mount units that support up to 12 flash modules. Flash modules are offered in 1 TB, 2 TB, and 4 TB capacities. All flash modules within a FlashSystem V840 Storage Enclosure must have the same capacity.

Software-defined flash services:

FlashSystem V840 data services are provided through IBM FlashSystem V840 Software, which offers a rich set of software-defined flash features that include FlashCopy, thin provisioning, remote mirroring, external virtualization, Easy Tier 3rd Generation, and Real-time Compression.

The FlashSystem V840 Software runs on the Control Enclosures.

When they are installed, the components of the FlashSystem V840 are shown in Figure 2, with two FlashSystem V840 (AC1) Control Enclosures 1 and 2 , and one V840 (AE1) storage Enclosure 3.
Figure 2. Front view of FlashSystem V840 in a compact 6U form factor


IBM FlashSystem V840 Enterprise Performance Solution highlights

With IBM FlashSystem V840, clients gain the benefits of combining software-defined services with extreme performance, as shown in Figure 3.

IBM FlashSystem V840 Enterprise Performance Solution benefits
Figure 3. FlashSystem V840 benefits

Faster applications

By accelerating applications, both physical and virtual, FlashSystem V840 can help organizations reduce costs, increase revenue, and improve customer satisfaction for all types of applications, including the following categories:
  • Transactional
  • Enterprise Resource Planning / Supply Chain Management (ERP/SCM)
  • Big data and analytics
  • Server and desktop virtualization
  • Cloud

Performance

FlashSystem V840 has the following performance features:
  • FlashSystem V840 eliminates IO bottlenecks while generating higher levels of application efficiency (improved performance).
  • FlashSystem V840 with an all-hardware data path using a field programmable-gate array (FPGA) is engineered to deliver the lowest possible latency.
  • MicroLatency provides latency that is measured in microseconds.
  • High aggregate performance (bandwidth) and IOPS (I/Os per second).

Reliability, availability, and serviceability

FlashSystem V840 delivers the following enterprise-class reliability features:
  • Concurrent code load enables customer applications to remain online during firmware upgrades to all components, including the flash modules.
  • Redundant hot-swappable components: The FlashSystem V840 Storage Enclosure has two clustered, hot-swappable canisters that each contain two hot-swappable fan modules, two management controllers, a management Ethernet port, and a USB port, Batteries, fans, and power supplies are all redundant and hot-swappable. If a flash module failure occurs, critical customer applications can remain online while the defective module is replaced.
  • IBM Variable Stripe RAID™ (VSR), which is a patented IBM technology that provides an intra-module RAID stripe within each flash module. Variable Stripe RAID technology helps reduce downtime and maintain performance and capacity in the event of partial or full flash chip failures.
  • Two-dimensional (2D) Flash RAID, which consists of IBM Variable Stripe RAID and system-wide RAID 5.
  • The FlashSystem V840 Control Enclosures are an active-active pair and support concurrent code load.

Flash for less than the cost of disk

By offering extreme performance and MicroLatency, FlashSystem V840 can take the place of multiple racks of hard disk drives (HDDs), in a small footprint. FlashSystem V840 can decrease your total cost of ownership (TCO) by lowering your power, space, and cooling costs, and reducing your software licensing expenses.

With the Real-time Compression feature, FlashSystem V840 can increase the effective capacity of your flash storage up to 5x, decreasing the cost for effective capacity up to 80%. Real-time Compression supports active data, unlike other data reduction solutions. The Model AC1 Control Enclosure offers several features for Real-time Compression workloads, including a second Xeon E5 v2 Series eight-core processor with 32 GB of memory and up to two optional compression accelerator cards for hardware-assisted compression.

Software-defined storage services

FlashSystem V840 merges IBM software-defined storage with the scalable performance of IBM FlashSystem technology to help make your entire storage environment easier to manage while preserving your investments in storage. Software-defined storage services enable you to use the following features across all of your storage.
  • Thin provisioning: Enables dynamic growth; purchase only the storage you need when you need it.
  • Easy Tier flash storage management: Optimized performance at lower overall cost.
  • High availability configurations: Enable near-continuous data availability.
  • Copy Services: Space efficient backups
  • Practice disaster recovery techniques: Validate business continuity plans.
  • Simple GUIs: Allow storage to be quickly deployed and efficiently managed.

Deep application integration

FlashSystem V840 includes the following features, which enable tight integration with VMware:
  • vCenter plug-in: Enables monitoring and self-service provisioning of the system from within VMware vCenter.
  • VAAI support: Supports hardware accelerated VM copy/migration, hardware accelerated VM initiation, and accelerates VMFS.
  • SRA for Site Recovery Manager: Supports automated storage and host failover, failover testing, and failback.


Scale up and scale out

FlashSystem V840 has a scalable architecture that allows flash capacity to be added (scaled up) to support multiple applications. The virtualized system can also be expanded (scaled out) to support higher IOPS and bandwidth, or the solution can be simultaneously scaled up and out to improve capacity, IOPS, and bandwidth while maintaining MicroLatency. As a result, your organization can gain a competitive advantage through a more flexible, responsive, and efficient storage environment. FlashSystem V840 has the following scalability features per building block:
  • Slots for up to 12 hot-swappable flash storage modules (1 TB, 2 TB, or 4 TB modules)
  • Configurable 2 - 40 TB of capacity for increased flexibility per storage enclosure
  • FlashSystem V840 has the following flexible scalability configuration options:
    • Base configuration
    • Scale up: Add more flash capacity
    • Scale out: Expand virtualized system
    • Scale up and out: Add more flash capacity and expand virtualized system

FlashSystem V840 is orderable in scalable configurations from a single building block (BB) and up to three additional scalable building blocks. A single FlashSystem V840 storage platform consists of two FlashSystem V840 Control Enclosures directly cabled to one FlashSystem V840 Storage Enclosure (SE), representing a building block (BB). For balanced increase of performance and scale, up to four FlashSystem building blocks may be clustered into a single storage system, multiplying performance and capacity with each addition.

The scalable building blocks require dedicated internal Fibre Channel switches. The scalable building block configurations also allow for the addition of up to four individual FlashSystem Storage Enclosures to be added to the storage system. If 160 TB from four building blocks isn't enough capacity, up to four additional Storage Enclosures (SEs) may then be added. In total, a FlashSystem V840 Storage System can contain a maximum of eight FlashSystem V840 Storage Enclosures, offering a potential storage capacity of 320 TB, and up to 1.6 PB effective capacity is available at 80% compression. Real-time Compression is available as an optional software feature which allows users to elect to deploy Real-time Compression where it is desired."


Figure 4 illustrates the scalable capacity of FlashSystem V840. It also shows that additional Storage Enclosures (SEs) can be added to a single building block (BB), as well as to two, three or four BBs.


Figure 4. FlashSystem V840 scalable capacity


Table 1 summarizes the minimum and maximum capacity for scalable building blocks (BB) including the addition of storage enclosures (SE).

Table 1. FlashSystem V840 capacities; scalable building blocks including additional storage enclosures
Scalable building blocksMinimum capacity (TB)Maximum capacity (TB)Maximum effective capacity (TB) with Real-time Compression
1 BB240 200
1 BB + 1 SE480400
1 BB + 2 SE 6120600
1 BB + 3 SE8160800
1 BB + 4 SE 102001,000
2 BB480400
2 BB + 1 SE6120600
2 BB + 2 SE8160800
2 BB + 3 SE102001,000
2 BB + 4 SE122401,200
3 BB6 120600
3 BB + 1 SE8160800
3 BB + 2 SE102001,000
3 BB + 3 SE122401,200
3 BB + 4 SE142801,400
4 BB8160800
4 BB + 1 SE102001,000
4 BB + 2 SE122401,200
4 BB + 3 SE142801,400
4 BB + 4 SE163201,600


Improving what you have for both IBM and non IBM resources

FlashSystem V840 offers software-defined storage virtualization technology that helps you manage other IBM or third-party storage arrays with thin provisioning, space efficient copies, and disaster recovery tools, such as data replication. Software-defined storage virtualization also helps ease the migration of data from one storage device to another. Virtualization of FlashSystem V840 Storage Enclosures enables rapid and flexible provisioning and simple configuration changes.

FlashSystem V840 enables you to manage the capacity of other disk systems with external storage virtualization. When FlashSystem V840 virtualizes a storage system, its capacity becomes part of the FlashSystem V840 system and is managed in the same way as the capacity on internal flash modules within FlashSystem V840. Capacity in external storage systems inherits all the rich functions and ease of use of FlashSystem V840.

FlashSystem V840 enables you to preserve your existing investments in storage, centralize management and ease storage migrations with storage virtualization and Easy Tier.

FlashSystem V840 provides non-disruptive operations, thanks to storage virtualization. Virtualization helps insulate applications from changes that are made to the physical storage infrastructure. When you add storage capacity or a new tier of storage, for example, the changes are transparent to applications, so you have minimal downtime.

Deploying quickly and flexibly

Flexible deployment options enable organizations to tailor the deployment architecture to the workload. This tailoring includes data access that bypasses the storage virtualization layer for low latency, data access through EasyTier, data compression using Real-time Compression, and data replication to disaster recovery sites. Clients can implement optimal business performance and enterprise features and choose how to deploy the following items:
  • Sets of data that are dedicated flash capacity for the lowest possible latency
  • Sets of data that participate in Easy Tier
  • Sets of data that are compressed using Real-time Compression
  • Sets of data for replication to disaster recovery sites
  • All of the above, or any combination

Driving new business opportunities

Clients can drive new business opportunities with IBM FlashSystem V840:
  • Improve workforce productivity
  • Lower power consumption
  • Enable data center consolidation
  • Run mixed workloads
  • Accelerate Infrastructure
  • Accelerate latency sensitive applications
  • Accelerate virtualization and virtual desktop infrastructure (VDI)
  • Accelerate databases and data warehousing

Manageability and security

FlashSystem V840 offers the following manageability and security features:
  • Advanced security for data at rest with hardware-accelerated AES-XTS 256 encryption.
  • Graphical user interfaces (GUIs), one that runs on the FlashSystem V840 Control Enclosure and one that runs on the FlashSystem V840 Storage Enclosure. GUIs are available in any supported browser. Also included is the FlashSystem V840 command-line interface (CLI), which is a collection of commands that you can use to manage the FlashSystem V840.
  • Email alerts.
  • Syslog redirect to send system log messages to another host.

FlashSystem V840 components

The following sections provide detailed descriptions about the FlashSystem V840 components.

Table 2 lists the part numbers that are associated with FlashSystem V840.

Table 2. FlashSystem V840 components
DescriptionMachine type-model
FlashSystem V840 Control Enclosure9846-AC1 or 9848-AC1
FlashSystem V840 Storage Enclosure9846-AE1 or 9848-AE1

Note: the Ordering System (eConfig) has a convenience function. With a single ticky mark the additional Fibre Channel switches can be added to the order easily and quickly to create a scalable configuration.

Warranty

FlashSystem V840 is available with either one-year or three-year warranties, so clients can select the warranty period that best addresses their business and financial needs:
  • Models that are ordered using machine type 9846 have a one-year warranty
  • Models that are ordered using machine type 9848 have a three-year warranty

The models that are offered under both machine types for each component are functionally identical.

FlashSystem V840 Control Enclosure features

FlashSystem V840 Control Enclosure provides advanced data services for flash memory. It is a 2U, 19-inch rack-mount enclosure. The FlashSystem V840 includes two Control Enclosures, also called controller nodes, for redundant host access. The Control Enclosures include twelve 8 Gb Fibre Channel (FC) ports that are used for connectivity. Five of the twelve ports are used for host communication, two are used for internal cluster communication, and the remaining five ports are used to communicate with FlashSystem V840 Storage Enclosures.

The FlashSystem V840 Control Enclosure consists of the following components:

Two control enclosures in each FlashSystem V840 provide redundancy. Each control enclosure consists of the following items:
    • 2U server node
    • Dual eight-core processor
    • 64 GB memory
    • Three 4 port 8 Gbps Fibre Channel adapters
    • Two integrated AC power supplies and battery units

The Control Enclosure also runs the FlashSystem V840 Software, providing a rich set of software-defined storage features, including FlashCopy, thin provisioning, remote mirroring, external virtualization, Easy Tier, and Real-time Compression.

FlashSystem V840 Control Enclosure FC interfaces support Fibre Channel Protocol (FCP) only, with point-to-point (FC-P2P), arbitrated loop (FC-AL), and switched fabric (FC-SW) topologies. FC interfaces can be configured as N_port or NL_port types. Full active-active multipathing across all interfaces is supported, although host software support for this function might vary. Figure 5 shows a generalized overview of FlashSystem V840 in a SAN environment.

System management

As FlashSystem V840 Control Enclosures cluster together to form a system, a single management interface is used for all Control Enclosures. FlashSystem V840 Storage Enclosure also has its own management module, which is independently accessible by the user to perform certain service-oriented tasks. Each FlashSystem V840 node is an individual server in a FlashSystem V840 clustered system on which the FlashSystem V840 software runs.

FlashSystem V840 GUIs

FlashSystem V840 includes easy-to-use management GUIs, one of which runs on the FlashSystem V840 Control Enclosure and one of which runs on the FlashSystem V840 Storage Enclosure to help you to monitor, manage, and configure your system. You can access the GUIs by opening any supported web browser and entering the management IP addresses. You can connect from any workstation that can communicate with the system.

Figure 5 shows a generalized view of SAN host connectivity topology in a FlashSystem V840 environment. The host fabric can consist of Fibre Channel switches that are zoned so that each FlashSystem V840 Control Enclosure (AC1) cannot see the other FlashSystem V840 Control Enclosure.

Figure 5. FlashSystem V840 - generalized view of host connectivity topology

FlashSystem V840 Storage Enclosure features

FlashSystem V840 Storage Enclosure is a purpose-built, all-flash storage shelf. It is a 2U 19-inch rack-mount enclosure with twelve slots for flash modules. The Storage Enclosure provides sixteen 8 Gb Fibre Channel ports to connect to FlashSystem V840 Control Enclosures, either directly or through dedicated internal switches (with the scalable building block). Flash modules within any individual building block are available in 1 TB, 2 TB, or 4 TB capacity and capacities cannot be inter-mixed.

The FlashSystem V840 Storage Enclosure has the following attributes and components:
  • Provides Flash storage.
  • FlashSystem V840 Storage Enclosure has full internal redundancy.
    • Redundant and hot-swappable Flash interface controllers.
    • Redundant and hot-swappable batteries.
    • Redundant and hot-swappable power and cooling.
  • Twelve Flash modules in 1 TB, 2 TB, or 4 TB capacities.
    • Orderable in 4, 6, 8, 10, or 12 module configuration.
    • All Flash modules must be the same capacity.
  • Up to 40 TB RAID 5 configuration, up to 200 TB effective capacity with optional Real-time Compression.
  • Eight 8 Gbps Fibre Channel ports per controller (total 4 ports per Storage Enclosure).

IBM FlashSystem V840 Storage Enclosures include two RAID controller modules, two battery modules, one power interposer, two power supplies, four interface cards, four fan modules, four to twelve flash storage modules, and one mid-plane. As viewed from the front of the Storage Enclosure (Figure 6), there are two battery modules on the far left of the enclosure and 12 flash module slots to the right of the battery modules. The front bezel of the systems contains status LEDs.
 Front view of FlashSystem V840 Storage Enclosure
Figure 6. Front view of FlashSystem V840 Storage Enclosure

The rear of the FlashSystem V840 Storage Enclosure (Figure 7) includes four Fibre Channel interface cards at the top, four fan modules in the middle, and two RAID modules at the bottom. To the right of the fans, there are two power supply modules that provide redundant power to the system. All components are concurrently maintainable except the mid-plane and power interposer, which have no active components. Interface maintenance requires the removal of a RAID module. All external connections are from the rear of the system.
Rear view of FlashSystem V840 Storage Enclosure
Figure 7. Rear view of FlashSystem V840 Storage Enclosure

Each flash storage module contains twenty or forty 24 nm NAND flash chips, one or two flash controller field programmable gate array (FPGA) chips, one gateway FPGA, one IBM PowerPC® based general-purpose processor, and several dynamic random access memory (DRAM) devices that are connected to the flash controllers and processor. Each flash controller manages a set of 20 flash chips. Each flash controller implements a sophisticated flash translation layer (FTL) incorporating ECC error correction, address translation, and IBM patented Variable Stripe RAID self-healing data protection that handles failures at the flash page level or higher. ECC checksums, which are used to reconstruct subpage failures, are stored in manufacturer-reserved areas of the flash chips that are not included in specifications for usable capacity.


Product specifications

Table 3 lists the specifications for the base configuration of FlashSystem V840.

Table 3. IBM FlashSystem V840 - base configuration specifications
IBM FlashSystem V840 – Base configuration
Models9846/8-AC1 and 9846/8-AE1
Flash typeeMLC
Form Factor 6U rack-mount
Flash module configuration4 x 1 TB, 6 x 1 TB, 8 x 1 TB, 10 x 1 TB, 12 x 1 TB, 8 x 2 TB, 10 x 2 TB, 12 x 2 TB, 8 x 4 TB, 10 x 4 TB, and 12 x 4 TB
Maximum storage capacity-Internal storage enclosure(s): Scalable from 2 TB (usable) up to 320 TB with full scale-out of control and storage enclosures.
-Effective internal: From 10 TB to 1.6 PB with full scale-out of control and storage enclosures (@ 80% reduction – requires Real-time Compression).
-External: Up to 32 PB usable capacity capacity (requires External Virtualization)
Maximum Performance (100% read, 512 B, cache hit)
Minimum latency60 µs
IOPS 945,000
Maximum Performance – Base Configuration (100% read, 4K random, cache miss)
Latency200 µs
IOPS526,000
Maximum Performance – Scaled out (100% read, 4K random, four FlashSystem V840 systems)
Latency200 µs
IOPS2,520,000
Bandwidth19.2 GBps
RAS featuresTwo-dimensional flash RAID
  • Module-level IBM Variable Stripe RAID™
  • System-level RAID 5 across modules
Hot-swappable flash modules
Tool-less module installation/replacement
Concurrent code load
Redundant and hot-swappable components

Table 3. IBM FlashSystem V840 - base configuration specifications (part 2 of 2)
IBM FlashSystem V840 – Base configuration
Supported platforms Information about servers, operating systems, host adapters, and connectivity products that are supported by FlashSystem products is available at the SSIC website:
http://www-03.ibm.com/systems/support/storage/config/ssic
EncryptionAES-XTS 256
FlashSystem V840 connectivity options10 x 8 Gbps Fibre Channel for the fixed building block
12 x 8 Gbps Fibre Channel for the scalable building block
Virtualization software model5639-FS7
Shared SMP processor configurationTwo Intel Xeon E5 v2 Series eight-core processor
Processor memory64 GB
Dimensions (height x width x depth)6U x 445 mm x 761 mm (6U x 17.5 in. x 29.96 in.)
Weight78 kg (171.8 lb) fully loaded


Options and features codes

This section describes the options and features codes of IBM FlashSystem V840.

Fibre Channel Interface cards

This required feature provides an enclosure connection card for Fibre Channel connectivity for the FlashSystem V840 Storage Enclosure. Interface feature code AF15 provides two FC interface modules with 8 Gbps FC support, as shown in Table 4. (Optics feature code 5 AF18 is required.)

Table 4. Supported Storage Enclosure and interface components
ItemMachine TypeFeature codeMaximum quantity DescriptionPorts
FC Host Interface Card9846/8-AE1AF152Enclosure connection card for Fibre Channel connectivityUp to 16 ports of 8 Gbps Fibre Channel (with AF18)
8 Gb FC 8 Port Host Optics9846/8-AE1AF182Set of 8 Gb Fibre Channel optics to enable eight portsUp to 16 ports of 8 Gbps Fibre Channel

Flash modules

FlashSystem V840 provides configurable flash module capacity. All modules are hot-swappable. FlashSystem V840 can be populated with four, six, eight, ten or twelve flash modules. Flash modules capacities are 1 TB (feature number AF1B), 2 TB (feature number AF10) or 4 TB (feature number AF11) and capacities cannot be inter-mixed within a single building block.

Usable RAID 5 protected capacity points are listed below for 1 TB, 2 TB and 4 TB modules:

The following capacity points are possible by using (AF1B) 1 TB flash modules:
  • 2 TB: Four 1 TB flash modules with RAID 5 protection
  • 4 TB: Six 1 TB flash modules with RAID 5 protection
  • 6 TB: Eight 1 TB flash modules with RAID 5 protection
  • 8 TB: Ten 1 TB flash modules with RAID 5 protection
  • 10 TB: Twelve 1 TB flash modules with RAID 5 protection

The following capacity points are possible by using (AF10) 2 TB flash modules:
  • 12 TB: Eight 2 TB flash modules with RAID 5 protection
  • 16 TB: Ten 2 TB flash modules with RAID 5 protection
  • 20 TB: Twelve 2 TB flash modules with RAID 5 protection

The following capacity points are possible using (AF11) 4 TB flash modules:
  • 24 TB: Eight 4 TB flash modules with RAID 5 protection
  • 32 TB: Ten 4 TB flash modules with RAID 5 protection
  • 40 TB: Twelve 4 TB flash modules with RAID 5 protection
Table 5 lists the supported flash modules.

Table 5. Supported flash modules
DescriptionMachine type Feature codeMaximum quantity
1 TB eMLC Flash Module9846/8-AE1AF1B12
2 TB eMLC Flash Module9846/8-AE1AF1012
4 TB eMLC Flash Module9846/8-AE1AF1112

IBM Variable Stripe RAID

Variable Stripe RAID data protection is managed independently by each flash controller on each flash module within each building block. With Variable Stripe RAID, every flash controller creates a striped data layout across sets of 10 chips. The Variable Stripe RAID stripe (page) size is 4 KB. When the Variable Stripe RAID algorithm detects a failure affecting one or more regions in a RAID stripe, the following process happens:
  1. Data that is stored in the affected regions is reconstructed from the remaining data/parity elements in the stripe.
  2. All pages in the affected stripe, including the reconstructed data, are moved to reserved space (overprovisioned area).
  3. Subsequent requests for data in the affected stripe are directed to the new locations (now part of the normal storage area in the system).
  4. The original location of the affected stripe is added to the available overprovisioned area as a (n-1) + parity stripe. (For example, if the affected stripe was a 9+1 stripe, it becomes an 8+1 stripe.)

No system-level rebuild process is necessary to maintain data protection or usable capacity after a failure is detected by Variable Stripe RAID. Further, the entire Variable Stripe RAID recovery process is automatic and transparent to the user and administrator, and typically takes place in less than a second. Variable Stripe RAID activities are not normally tracked in system logs, but the root causes of failures that are typically handled by Variable Stripe RAID-plane failures and block-failures are tracked in system counters and reflected in the overall flash module and system health metrics. FlashSystem V840 modules use 24 nm enterprise multi-level cell (eMLC) flash chips, nominally rated for 30,000 P/E cycles. Each flash chip package incorporates eight flash dies (8DP).

IBM Two-dimensional (2D) Flash RAID

The combination of Variable Stripe RAID and system-level RAID 5 protection across flash modules is called two-dimensional (2D) Flash RAID. Variable Stripe RAID automatically and transparently protects against partial or full flash chip failures within the flash module, with no downtime or maintenance required. System-level RAID 5 adds protection against complete flash module failure and enables hot-swappable flash modules. Additionally, all active components are redundant and hot-swappable with tool-less access from the front or back of the system, enhancing two-dimensional RAID protection.

RAID 5 support

Up to 2048 logical volumes (sometimes referred to as LUNs) can be created in the system, with a minimum size of 1 MB and a maximum size of the full available system capacity under the direction of the management module, RAID module field-programmable gate arrays (FPGAs) can coordinate data transfer between modules, for example, to rebuild the system-level RAID data layout.
Network cables and UPS

FlashSystem V840 Control Enclosure supports the network cables and UPS features that are listed in Table 6.

Table 6. FlashSystem V840 Control Enclosure data cables and UPS features
FlashSystem V840 Control Enclosure - Data CablesFeature Code
Trade Agreement Act (TAA) compliance 0983
1m Fiber Cable (LC-LC)5301
5m Fiber Cable (LC-LC)5305
25m Fiber Cable (LC-LC)5325
US 250V/10A 6 ft 9714
Priced Optional Features – Power cords for Control EnclosureFeature Code
Europe, Mid-East, Africa9716
Austral, N.Z.9717
Europe, Africa9718
Europe, Den9719
Pakistan, S. Africa9720
Switzerland, Liechtenstein9721
Chile, Italy, Ethiopia9722
Israel9723
Argentina9725
China9726
US Group 1 : Provides two 2.8 meter 10A/125V, C13 to NEMA 5-15P power cords9731
Taiwan9732
Brazil9733
India9734
Japan9735
Korea9736
Chicago9737
Priced Optional Features – Other for Control EnclosureFeature Code
Compression AcceleratorAH1A

FlashSystem V840 Storage Enclosure supports the network cables and UPS features that are listed in Table 7.

Table 7. FlashSystem V840 Storage Enclosure data cables and UPS features
FlashSystem V840 Storage Enclosure - Data CablesFeature Code
1 m Fiber Cable (LC-LC)3700
5 m Fiber Cable (LC-LC)3701
Priced Optional Features – Storage Enclosure Data CablesFeature Code
Power cord - 2.8m (China)6210
Power cord - 2.8m (Aus/NZ)6211
Power cord - 2.8m (Europe)6212
Power cord - 2.8m (Denmark)6213
Power cord - 2.8m (S. Africa)6214
Power cord - 2.8m (UK)6215
Power cord - 2.8m (Swiss)6216
Power cord - 2.8m (Ita/Chile)6217
Power cord - 2.8m (Israel)6218
Power cord - 2.8m (S Korea)6219
Power cord - 2.8m (Argentina)6222
Power cord - 2.8m (India)6269
Power cord - 2.8m 120V (US)6313
Power cord - 2.8m (Japan)6314
Power cord - 2.8m (Taiwan)6386
Power cord - 2.8m (Brazil)6532
Base Configuration – Storage EnclosureManufacturing Feature Index (MFI)
Rack cable 2.0 m 125 - 250V (WW)  (quantity 2)
 39Y5532
Priced Optional Features – Other for Storage EnclosureFeature Code
Building Block Indicator - indicates this is 1 of potentially 4 building blocks in a scalable cluster3001
Additional Storage Enclosure Indicator - indicates this is 1 of potentially 4 additional Storage Enclosures in a scalable 1 cluster3002

Encryption

FlashSystem V840 provides support for AES XTS 256 data-at-rest encryption when the Encryption Enablement Pack, feature AF14, is ordered.

System management and web interface

FlashSystem V840 includes the IBM CLI, which is also useful for scripting, and an intuitive GUI for simple and familiar management of the product. FlashSystem V840 supports SNMP, email forwarding (SMTP), and syslog redirection for complete enterprise management access. The simple GUI allows storage to be quickly deployed and efficiently managed. The GUI runs on the FlashSystem V840, so there is no need for a separate console. All you need to do is point your web browser to the system.

The FlashSystem V840 Storage Enclosure management modules are configured for active-passive redundancy. The management modules run a highly customized Linux-based operating system that coordinates and monitors all significant functions in the system. The management modules provide a web interface, Secure Shell (SSH) access, and SNMP connectivity through external Ethernet interfaces. The web and SSH interfaces allow administrators to monitor system performance and health metrics, configure storage, and collect support data, among other features.

As FlashSystem V840 Control Enclosures cluster together to form a system, a single management interface is used for all Control Enclosures. FlashSystem V840 Storage Enclosure also has its own management module, which is independently accessible by the user to perform certain service-oriented tasks.

The storage configuration includes defining logical units with capacities, access policies, and other parameters. No software needs to be installed on host computers to administer FlashSystem V840 beyond a web browser or a standard SSH client.


Supported platforms

FlashSystem V840 has extensive interoperability with support for a wide range of operating systems (Windows Server 2008 and 2012, Linux, and IBM AIX®), hardware platforms (IBM System x®, IBM Power Systems™, and x86 servers not from IBM), HBAs, and SAN fabrics. For specific information, see the IBM System Storage® Interoperation Center (SSIC):

http://www.ibm.com/systems/support/storage/ssic/interoperability.wss

Physical and electrical specifications

FlashSystem V840 has the following physical, electrical, and environmental specifications.

FlashSystem V840 Control Enclosure (9846-AC1 or 9848-AC1)
  • Dimensions and weight
    • Width: 445 mm (17.5 in.)
    • Depth: 746 mm (29.4 in.)
    • Height: 86 mm (3.4 in.)
    • Weight:
      • Empty: 21.1 kg (46.4 lb)
      • Fully configured: 22.0 kg (48.4 lb)
  • Air temperature
    • Operating: 5 to 40 °C (41 °F to 104 °F) up to 950 m (3,117 ft)
    • Powered off: 1 to 60 °C (33.8 °F to 140 °F)
    • Storage: 1 °C to 60 °C (34 °F to 140 °F) at 0 to 2,133 m (0 to 7,000 ft)
    • Shipping: -20 °C to 60 °C (-4 °F to 140 °F) at 0 to 10,668 m (0 to 35,000 ft)
  • Relative humidity
    • Operating: 8% - 85%
    • Non-operating: 8% - 85%
  • Electrical power
    • Voltage range: 100 - 240 V ac
    • Frequency: 50 - 60 Hz
    • Power: 150 watts
  • Heat dissipation: (BTU per hour): 512
  • Acoustical noise emission: 6.3 bels (idling and operating)

FlashSystem V840 Storage Enclosure (9846-AE1 or 9848-AE1)
  • Dimensions and weight
    • Width: 445 mm (17.6 in.) (19-inch Rack Standard)
    • Depth: 761 mm (29.96 in.)
    • Height: 86.2 mm (3.39 in.)
    • Weight: 34 kg (75 lb fully loaded)
  • Air temperature
    • Operating: 5 °C to 40 °C (41 °F to 104 °F) at 30.5 below to 3,000 m above sea level (100 ft below to 9,840 ft above)
    • Non-operating: 5 °C to 45 °C (41 °F to 113 °F)
  • Relative humidity
    • Operating: 8% - 85%
    • Non-operating: 5% - 80%
  • Electrical power
    • Voltage range: 100-240 VAC
    • Frequency: 50 - 60 Hz
  • Acoustical noise emission: 8.0 bels (LwAd) when operating in a 19-inch system rack
  • Power consumption: 900 watts maximum, 625 watts typical operation
  • Heat dissipation: 1194 BTU per hour

Software and licensing

FlashSystem V840 uses IBM Storwize software-defined storage features. FlashSystem V840 data services are provided through FlashSystem V840 Software. FlashSystem V840 has both base and optional software licenses.

Base licensed features

The following functions are provided with the FlashSystem V840 base software license:
  • Virtualization of FlashSystem V840 Storage Enclosures: Enables rapid, flexible provisioning, and simple configuration changes.
  • FlashCopy: FlashCopy provides a volume level point-in-time copy function for any storage that is virtualized by FlashSystem V840. FlashCopy and snapshot functions enable you to create copies of data for backup, parallel processing, testing, and development, and have the copies available almost immediately.
  • Thin provisioning: Helps improve efficiency by allocating disk storage space in a flexible manner among multiple users, based on the minimum space that is required by each user at any given time.
  • Data migration: Enables easy and non-disruptive moves of volumes from another storage system onto the FlashSystem V840 system by using Fibre Channel connectivity. Dynamic migration helps speed data migrations from weeks or months to days, eliminating the cost of add-on migration tools and providing continuous availability of applications by eliminating downtime.
  • Simple GUI: Simplified management with the intuitive GUI enables storage to be quickly deployed and efficiently managed. The GUI runs on the FlashSystem V840 system, so there is no need for a separate console. All you need to do is point your web browser to the system
  • Easy Tier technology: This feature provides a mechanism to seamlessly migrate data to the most appropriate tier within the FlashSystem V840. This migration can be to the internal flash memory within FlashSystem V840 Storage Enclosure, or to external storage systems that are virtualized by FlashSystem V840 Control Enclosure. EasyTier technology adds more blended economy of capacity and is useful for cost effective expansion and usage of your existing storage capacity investment.

    Easy Tier now allows for up to three tiers of storage. For example, you can set up a storage pool intended for Easy Tier volumes where the pool is comprised of the FlashSystem V840 storage enclosures, 15K RPM Fibre Channel disk drives, and SAS disk drives.

  • Real-time Compression Enhancements: Real-time Compression in FlashSystem V840 software has been enhanced to provide improvements in performance with the delivery of the new IBM FlashSystem V840 Control Enclosure (9846-AC1 or 9848-AC1), including use of the compression accelerator card optional hardware feature. This feature is mandatorily is included with the selection of Real-time Compression software.
  • Automatic re-striping of data across storage pools: When growing a storage pool by adding more storage to it, FlashSystem V840 software has the ability to re-stripe your data on pools of storage without having to implement any manual or scripting steps. This helps grow storage environments with greater ease while retaining the performance benefits that come from striping the data across the disk systems in a storage pool.

FlashSystem Software is installable only on FlashSystem V840 Control Enclosures and Storage Enclosures (9846-AC1, 9846-AE1, 9848-AC1, and 9848-AE1).

Optional licensed features

The following optional licensed features are offered with the FlashSystem V840 Software:
  • External storage virtualization: Enables FlashSystem V840 to manage capacity in other Fibre Channel SAN storage systems. When FlashSystem V840 virtualizes a storage system, its capacity becomes part of the FlashSystem V840 system and it is managed in the same way as capacity on internal flash modules within FlashSystem V840. Capacity in external storage systems inherits all the functional richness of the FlashSystem V840.
  • Real-time Compression: Helps improve efficiency by compressing data by as much as 80%, enabling storage of up to 5x as much data in the same physical space. Unlike other approaches to compression, Real-time Compression is designed to be used with active primary data such as production databases and email systems, dramatically expanding the range of candidate data that can benefit from compression.

  • Remote Mirroring: Provides storage system-based data replication by using either synchronous or asynchronous data transfers over Fibre Channel communication links:
    • Metro Mirror maintains a fully synchronized copy at metropolitan distances (up to 300 km).
    • Global Mirror operates asynchronously and maintains a copy at much greater distances (up to 8000 km).

    Both functions support VMware Site Recovery Manager to help speed disaster recovery. FlashSystem V840 remote mirroring interoperates with other FlashSystem V840 storage systems.

Table 8 lists the software license descriptions and feature codes.

Table 8 Base and optional software licenses
Program Number / Product IDLicense typeName
5639-FS7 BaseIBM FlashSystem V840 V7, Base, FlashCopy, Thin Provisioning, Easy Tier 3, Single enclosure, system entitled
5639-FV7OptionalIBM FlashSystem V840 Virtualization Software V7
5639-FR7OptionalIBM FlashSystem V840 Remote Mirroring Software V7
5639-FC7OptionalIBM FlashSystem V840 Real-time Compression, 3:1 (average), scoped to individual volumes


How to count and order licenses

This section describes the base and optional licensing features, and helps you to calculate and determine the software licenses to order for your environment. Figure 8 shows the base and the optional software licenses that can be ordered for FlashSystem V840. Also shown in Figure 8 is a color key that maps to the software licenses that are described for the following topics and diagrams.


Figure 8. FlashSystem V840 base and optional software licenses



IBM FlashSystem V840 V7 Base Software (5639-FS7)

IBM FlashSystem V840 V7 Base Software (5639-FS7) provides core software functionality and is required in all FlashSystem V840 offerings. The software includes components that are installed on FlashSystem V840 Control Enclosures (9846-AC1 or 9848-AC1), but licensing is based solely on the quantity of FlashSystem V840 Storage Enclosures that are included in the system. Each FlashSystem V840 Storage Enclosure (9846-AE1 or 9848-AE1) requires one 5639-FS7 FlashSystem V840 V7 Base Software license.

Example: A FlashSystem V840 order consisting of two Control Enclosures and one Storage Enclosure requires a quantity of one FlashSystem V840 V7 Base Software license. Figure 9 illustrates the FlashSystem V840 Base Software License.


Figure 9. FlashSystem V840 Base Software License

IBM FlashSystem V840 External Virtualization Software V7 (5639-FV7)

Each FlashSystem V840 Control Enclosure (9846-AC1 or 9848-AC1) can attach and manage external storage devices on the SAN in the same way, for example, as the IBM Storwize V7000. To authorize the usage of this function, you must license the IBM FlashSystem V840 External Virtualization feature code. One IBM FlashSystem V840 External Virtualization feature code (5639-FV7) is required for each externally attached Storage Enclosure that is virtualized with FlashSystem V840. FlashSystem V840 Storage Enclosures (9846-AE1 or 9848-AE1) are not considered externally attached Storage Enclosures and do not require separate licenses.

A Storage Enclosure that is externally managed by FlashSystem V840 is defined as an independently powered, channel-attached device that stores data on magnetic disks or SSDs, such as disk controllers and their respective expansion units, each constituting a separate enclosure. Therefore, an enclosure can be either the main controller housing disk (or solid-state) drives or the expansion chassis that house additional disk (or solid-state) drives for the purpose of expanding the total capacity of the storage system. If there is any confusion for an external Storage Enclosure that does not conform to this definition, consult an IBM sales representative for an equivalent measure based on a disk drive count.

Example: If you want to use a FlashSystem V840 to virtualize one IBM Storwize V5000 system consisting of one Control Enclosure and one expansion enclosure, you need two IBM FlashSystem V840 External Virtualization licenses to remain compliant, one for the externally attached control enclosure and one for the externally attached expansion enclosure for a total of two FlashSystem V840 External Virtualization licenses (5639-FV7).

This feature code quantity can be applied against any one or more of the FlashSystem V840 Software V7 (5639-FS7) licensed products, as shown in Figure 10.


Figure 10. External virtualization of two Storwize V5000 systems

IBM FlashSystem V840 Real-time Compression V7 (5639-FC7)

To authorize the use of Real-time Compression capabilities of the FlashSystem V840, you must purchase the IBM FlashSystem V840 Real-time Compression V7 license. This license is subject to the following rules that are associated with ordering the number of required licenses for your environment:
  • The capacity bearing storage device is what is counted. FlashSystem V840 always has a Storage Enclosure, and at least has a count of one Real-time Compression license.
  • Capacity bearing storage devices that are associated with the FlashSystem V840 and being externally virtualized are also counted.

    Selecting Real-time Compression automatically selects the hardware compression accelerator, Feature Code AH1A.


Example: Consider a FlashSystem V840 consisting of two FlashSystem V840 Control Enclosures, one FlashSystem V840 Storage Enclosure, and three Storwize V5000 systems. In this example, there are three external virtualization licenses (5639-FV7), and four Real-time Compression licenses (5639-FC7) being used for the three V5000 products and one more for the FlashSystem V840 Storage Enclosure, as shown in Figure 11.


Figure 11. FlashSystem V840 - external virtualization of three V5000 systems

IBM FlashSystem V840 Remote Mirroring Software V7 (5639-FR7)

IBM FlashSystem V840 Remote Mirroring Software is licensed based on the quantity of FlashSystem V840 Storage Enclosures in the client environment, and is subject to the following rules:
  • The capacity bearing storage device is what is counted on both sides of the mirrored pair.
  • Capacity bearing storage devices that are associated with the FlashSystem V840 that are involved in the mirror relationship and being externally virtualized are also counted. They require Remote Mirroring licenses on both sides of the mirror relationship.
  • Of the storage devices that are engaged in the mirrored pair, the lesser of the two counts for ordering Remote Mirroring software licenses.

This feature code quantity can be applied against one or more of the IBM FlashSystem V840 V7 Base Software (5639-FS7) licensed products. The following scenarios are examples of how to license Remote Mirroring Software features under the above licensing rules.

Scenario 1

The primary site, Production 1, shown in Figure 12, has no externally virtualized storage, and the target site, Central DR, employs an IBM XIV® consisting of six capacity bearing modules/enclosures as needed.

Production 1 is a FlashSystem V840 with two FlashSystem V840 Control Enclosures, one FlashSystem V840 Storage Enclosure, and nothing externally virtualized. Therefore, it has one 5639-FS7 Base Software license for the one FlashSystem V840 Storage Enclosure.

The Central DR system is a FlashSystem V840 storage system with two FlashSystem V840 Control Enclosures, and one FlashSystem V840 Storage Enclosure, with six virtualized XIV enclosures. Therefore, the secondary system has one 5639-FS7 Base Software license, six 5639-FV7 External Virtualization licenses, and seven 5639-FR7 Remote Mirroring licenses.

Following the rule of counting the lesser of storage devices that are engaged in a mirrored pair, the primary system has one Remote Mirroring license (5639-FR7), and has the lesser quantity of Remote Mirrored licenses, as compared to the secondary Central DR system, which has one Remote Mirroring license (5639-FR7) for the FlashSystem V840 Storage Enclosure, plus six Remote Mirroring licenses for a total of seven Remote Mirroring licenses (5639-FR7). A total of two Remote Mirroring licenses (5639-FR7) are required, as shown in Figure 12.


Figure 12. Counting Remote Mirroring Licenses - Scenario 1


Scenario 2

The primary system, Production 2, shown in Figure 13, is performing some external virtualization. The target site, Central DR, employs an XIV consisting of six capacity bearing modules/enclosures as needed.

Production 2 is a FlashSystem V840 storage system with two FlashSystem V840 Control Enclosures and one FlashSystem V840 Storage Enclosure with two virtualized IBM Storwize V5000 systems. Therefore, the primary system has one 5639-FS7 Base Software license, two 5639-FV7 External Virtualization licenses, plus three 5639-FR7 Remote Mirroring licenses.

The target system, Central DR, is a FlashSystem V840 storage system with two FlashSystem V840 Control Enclosures, one FlashSystem V840 Storage Enclosure, with six virtualized XIV enclosures that are being remotely mirrored. Therefore, the secondary system has one 5639-FS7 base Software license, six 5639-FV7 External Virtualization licenses, plus seven 5639-FR7 Remote Mirroring licenses (one of these licenses pertains to the FlashSystem V840 Storage Enclosure).

Following the rule of counting the lesser of storage devices that are engaged in a mirrored pair, the primary system has three Remote Mirroring licenses (5639-FR7), and has a lesser quantity of Remote Mirrored licenses, as compared to the secondary Central DR system, which has seven Remote Mirroring licenses (5639-FR7).

A total of six Remote Mirroring licenses (5639-FR7) are required: three licenses for the primary system plus three licenses for the secondary system, as shown in Figure 13.


Figure 13. Counting Remote Mirroring Licenses - Scenario 2

Scenario 3

The primary system, Production 3, shown in Figure 14, is performing some external virtualization, Real-time Compression, and mirroring. The target site, Central DR, employs an XIV consisting of six capacity bearing modules/enclosures as needed.

Production 3 is a FlashSystem V840 with two FlashSystem V840 Control Enclosures and one FlashSystem V840 Storage Enclosure with three virtualized IBM Storwize V5000 systems, using Real-time Compression. Therefore, the primary system has one 5639-FS7 Base Software license, three 5639-FV7 External Virtualization licenses, four 5639-FC7 Real-time Compression licenses, plus four 5639-FR7 Remote Mirroring licenses.

The target system, Central DR, is a FlashSystem V840 storage system with two FlashSystem V840 Control Enclosures, one FlashSystem V840 Storage Enclosure, with six virtualized XIV enclosures that are being remotely mirrored. Therefore, the secondary system has one 5639-FS7 base Software license, six 5639-FV7 External Virtualization licenses, plus seven 5639-FR7 Remote Mirroring licenses (one of these licenses pertains to the FlashSystem V840 Storage Enclosure).

Following the rule of counting the lesser of storage devices that are engaged in a mirrored pair, the primary system has four Remote Mirroring licenses (5639-FR7), and has a lesser quantity of Remote Mirrored licenses, as compared to the secondary Central DR system, which has seven Remote Mirroring licenses (5639-FR7).

A total of eight Remote Mirroring licenses (5639-FR7) are required: four licenses for the primary system plus four licenses for the secondary system, excluding the six additional Remote Mirroring licenses for the XIV enclosures, as shown in Figure 14.


Figure 14. Counting Remote Mirroring Licenses - Scenario 3


Warranty information and upgrades

FlashSystem V840 is shipped with a one-year or a three-year warranty.

Technical Advisor support is provided during the warranty period. This support enhances end-to-end support for the client's complex IT solutions. The Technical Advisor uses an integrated approach for proactive, coordinated cross-team support to allow customers to maximize IT availability. Technical Advisor support for FlashSystem V840 is delivered remotely and includes a documented support plan, coordinated problem and crisis management, which reports on the client's hardware inventories and software levels, and consultation regarding FlashSystem software updates. The Technical Advisor conducts a Welcome Call with the client and provides a statement of work for this support.


IBM Global Financing

IBM Global Financing offers competitive financing to credit-qualified customers and IBM Business Partners to assist them in acquiring IT solutions. Our offerings include financing for IT acquisition, including hardware, software, and services, from both IBM and other manufacturers or vendors, and commercial financing (revolving lines of credit, term loans, acquisition facilities, and inventory financing credit lines) for IBM Business Partners. Offerings (for all customer segments: small, medium, and large enterprise), rates, terms, and availability can vary by country. Contact your local IBM Global Financing organization or go to the following website:

http://www.ibm.com/financing

Related publications and links

For more information, see these resources:

  • IBM FlashSystem V840 Knowledge Center
http://www.ibm.com/support/knowledgecenter/ST2HTZ
  • IBM Offering Information page (announcement letters and sales manuals):
    http://www.ibm.com/common/ssi/index.wss?request_locale=en

    On this page, enter FlashSystem, select the information type, and then click Search. On the next page, narrow your search results by geography and language.

Special Notices

This material has not been submitted to any formal IBM test and is published AS IS. It has not been the subject of rigorous review. IBM assumes no responsibility for its accuracy or completeness. The use of this information or the implementation of any of these techniques is a client responsibility and depends upon the client's ability to evaluate and integrate them into the client's operational environment. publib-b.boulder.ibm.com

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Publish Date
28 February 2014

Last Update
17 July 2014


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