Implementing IBM FlashSystem 840

A draft IBM Redbooks publication


Almost all technological components in the data center are getting faster; central processing units, network, storage area networks (SAN), and memory. All of them have improved their speed by a minimum of 10X; some of them by 100X, for example, data networks. However, spinning disk performance has only increased by 1.2 times.

FlashSystem™ 840 closes this gap. FlashSystem 840 is optimized for the data center to enable organizations of all sizes to strategically harness the value of stored data. It provides flexible capacity and extreme performance for the most demanding applications, including virtualized or bare-metal online transaction processing (OLTP) and online analytical processing (OLAP) databases, virtual desktop infrastructures (VDI), technical computing applications, and cloud environments. The system accelerates response times with IBM® MicroLatency™ access times as low as 90 µs write latency and 135 µs read latency to enable faster decision making.

The introduction of a low capacity 1 TB flash module allows FlashSystem 840 to be configured in capacity points as low as 2 TB in protected RAID 5 mode. Coupled with 10 GB iSCSI, FlashSystem is positioned to bring extreme performance to small and medium sized businesses (SMB) and growth markets.

This IBM Redbooks® publication introduces clients to IBM FlashSystem. It provides in-depth knowledge of the product architecture, software and hardware, its implementation, and hints and tips. Also illustrated are use cases that show real-world solutions for tiering, flash-only, and preferred read, as well as examples of the benefits gained by integrating FlashSystem storage into business environments.

Table of contents

Chapter 1. FlashSystem storage Introduction
Chapter 2. IBM FlashSystem 840 architecture
Chapter 3. Planning
Chapter 4. Installation and configuration
Chapter 5. IBM FlashSystem 840 client host attachment and implementation
Chapter 6. Using the IBM FlashSystem 840
Chapter 7. Configuring settings
Chapter 8. Product integration
Chapter 9. Use cases and solutions
Chapter 10. Hints and tips
Appendix A. SAN preferred practices for 16 Gbps
Appendix B. Unsupported host attachment and implementation


These pages are Web versions of IBM Redbooks- and Redpapers-in-progress. They are published here for those who need the information now and may contain spelling, layout and grammatical errors.

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. Your feedback is welcomed to improve the usefulness of the material to others.

IBM assumes no responsibility for its accuracy or completeness. The use of this information or the implementation of any of these techniques is a customer responsibility and depends upon the customer's ability to evaluate and integrate them into the customer's operational environment.


Last Update
19 August 2014

Planned Publish Date
05 September 2014

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