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 IBM FlashSystem 840

Data center-optimized to deliver extreme performance, flexible capacity and total system protection

IBM 840

  • Leverage high availability and hot-swappable components to lower mean time to repair
  • Scale business with flexible, extreme-performance flash storage that accelerates low-latency, I/O-intense applications, including online-transaction processing (OLTP) and online-analytical processing (OLAP)
  • Improve the economics of IT by easily integrating with existing infrastructure to maximize total cost of ownership and return on investment
  • Operate at peak efficiency with IBM® MicroLatency™, high bandwidth, flexible connectivity and low wattage—all in a 2U footprint
  • Add enterprise management features with IBM System Storage® SAN Volume Controller
  • Boost reliability with enterprise-class flash storage and patented data protection technology
  • Offer scalable performance in storage devices that are both space and power efficient

To build a sustainable advantage in a world of 24×7 continuous operations, today’s enterprise organizations must be able to extract the full value of their vast and complex data sets. Because data is the new business currency, organizations must quickly and efficiently transact, analyze and gain actionable insight from it to fully capitalize on its value. The IBM FlashSystem™ family empowers organizations to take advantage of best-in-breed solutions that provide extreme performance, macro efficiency and microsecond response times. As a result, these organizations can quickly harness the value of stored data—and be better positioned to compete, innovate and grow in today’s real-time world.

IBM FlashSystem 840 is data center-optimized to enable organizations to strategically harness the value of stored data. By providing flexible capacity and extreme performance for the most demanding enterprise-class applications, including OLTP and OLAP databases, virtual desktop infrastructures, technical-computing applications and cloud-scale environments, FlashSystem 840 delivers a competitive advantage for the modern enterprise. The IBM system accelerates response times with MicroLatency—that is, less than 135-microsecond access times—to enable faster decision making. In addition to optimizing performance, FlashSystem 840 delivers best-in-class reliability in a storage device that is both space and power efficient.


  • Feature Benefits
    IBM MicroLatency
    • Delivers a microsecond response time to accelerate enterprise applications and achieve competitive advantages
    Enterprise reliability
    • Provides fully redundant, hot-swappable components; multiple RAID layers
    • Offers concurrent code upgrades to maximize uptime and availability
    • Provides tool-less, front access to all components
    IBM Variable Stripe RAID technology
    • Maintains performance and enhances reliability—without sacrificing usable capacity
    Ultimate data protection
    • Offers AES-XTS 256 encryption with zero performance impact

  • Model 9840-AE1, 9843-AE1
    Flash type eMLC
    Flash module configuration 2 x 2 TB 4 x 2 TB 4 x 4 TB 8 x 2 TB 12 x 2 TB 8 x 4 TB 12 x 4 TB
    Raw capacity (TB/TiB) 5.50 TB/5.00 TiB 11.00 TB/10.00 TiB 21.99 TB/20.00 TiB 21.99 TB/20.00 TiB 32.99 TB/30.00 TiB 43.98 TB/40.00 TiB 65.97 TB/60.00 TiB
    RAID 0 usable capacity (TB/TiB) 4.12 TB/3.75 TiB 8.25 TB/7.50 TiB N/A 16.49 TB/15.00 TiB 24.74 TB/22.50 TiB 32.99 TB/30.00 TiB 49.48 TB/45.00 TiB
    RAID 5 usable capacity (TB/TiB) N/A 4.12 TB/3.75 TiB 8.25 TB/7.50 TiB 12.37 TB/11.25 TiB 20.62 TB/18.75 TiB 24.74 TB/22.50 TiB 41.23 TB/37.50 TiB
    Minimum latency
    Write 90 µs
    Read 135 µs
    Maximum IOPS 4 KB
    Read (100%, random) 1,100,000
    Read/write (70%/30%, random) 775,000
    Write (100%, random) 600,000
    Maximum bandwidth 256 KB
    Read (100%, sequential) 8 GB/s
    Write (100%, sequential) 4 GB/s
    RAS features
    • Two-dimensional flash RAIDHot-swappable flash modules
      • Module-level Variable Stripe RAID
      • System-level RAID 5 across modules
    • Tool-less module installation/replacement
    • Concurrent code load
    • Redundant and hot-swappable controllers, interface cards, power supplies, batteries, and fans
    Encryption AES-XTS 256
    Supported RAID levels 0, 5
    Connectivity options 16 x 8 Gb Fibre Channel8 x 16 Gb Fibre Channel8 x 40 Gb quad data rate (QDR) InfiniBand16 x 10 Gb Fibre Channel over Ethernet (FCoE)
    Power 625 Watts (nominal)
    Cooling 280 cubic ft per min. (at the fan)
    Client operating system support For a current list of platforms supported, please visit the IBM System Storage Operation Center (SSIC).
    Maximum volume support (logical unit numbers [LUN]) 2K (2,048)
    Storage management Common storage interface (SAN Volume Controller v7.2)
    Management interfaces Command line interface (CLI), graphical user interface (GUI)
    Environmental requirements 41°F – 104°F (5°C – 40°C) operating, 5°C – 45°C (41°F – 113°F) non-operating-950m – 3050m (-3116 ft – 10006 ft) altitude8% – 85% relative humidity operating, 5% – 80% relative humidity non-operating0.1g root mean square (RMS) operational vibration (0.1g RMS at 5 Hz to 500 Hz for 30 minutes)3.5 g RMS operational shock (vertical input: 3.5G for 3 ms, half-sine shock pulse, five shocks to machine base)half-sine pulse vertical non-operational—should use 10x – 40 in./s at 2–3 ms drops and 2x – 70 in./s at 2–3 ms
    Dimensions (H x W x D) 2U x 445 mm x 761 mm (2U x 17.5 in. x 29.96 in.)
    Weight 34 kg (75 lbs) fully loaded.
    Regulatory requirements Safety: IEC/EN 60950, CB Certificate, UL60950-1 CAN/CSA-C22.2 No.60950-1, CE MarkEmissions Class A:FCC—Verified to comply with Part 15 of the FCC Rules, Class ACanada ICES-003, Issue 5, Class AJapan VCCI, Class AAustralia/New Zealand AS/NZS CISPR 22:2006, Class ATaiwan BSMI CNS 13438, Class AGB 9254-2008 Class A, GB 17625.1Korea KN22, Class A; KN24Russia GOST R 51318.22, GOST R 51318.24, GOST R 51317.3.2, GOST R 51317.3.3CE Mark (EN55022 Class A, EN55024, EN61000-3-2, EN61000-3-3)CISPR 22, Class A