Technical specifications

IBM FlashSystem A9000 at a glance


9836-425 (1-year warranty), 9838-425 (3-year enterprise-class warranty)


Three-way active grid controllers, each containing:

  • Two Intel Xeon E5 v4 12-core 2.2 Gigahertz (GHz) processors
  • 384 gigabytes (GB) DDR4 memory
  • Redundant battery backup units and power supply units


IBM FlashSystem A9000 and IBM FlashSystem A9000R software v12

Effective capacity*

110 terabytes (TB)

180 TB

425 TB

900 TB

Maximum capacity

1,200 TB

1,200 TB

1,200 TB

1,200 TB

Physical capacity

21.6 TB

36 TB

85 TB

180 TB

Raw capacity

36.9 TB

55.3 TB

129 TB

258 TB

IBM MicroLatency modules

8 x 3.6 TB

12 x 3.6 TB

12 x 8.5 TB

12 x 18 TB

Flash type

IBM-enhanced 3D TLC



Up to 900,000

Maximum bandwidth

12 GB/s

Minimum latency

250 µs

Data reduction and efficiency

  • Pattern removal
  • Global, inline deduplication
  • Inline compression
  • Space-efficient snapshots
  • Thin provisioning


Hardware-based AES-XTS 256-bit with centralised key management

Host connectivity options

12 x 16 Gigabits (Gb) Fibre Channel (FC) + 6 x 10 Gb Internet small computer system interface (iSCSI), or
12 x 10 Gb iSCSI

Backplane interconnect



1.69 KW (typical); 2.91 KW (max)

Dimensions (H x W x D)

356 mm (8U) x 483 mm x 930 mm (14 in. x 19 in. x 36.6 in.)


125 kg (275.5 lb)

Client operating system (OS) support

For a current list of platforms supported, please visit the IBM System Storage Interoperation Centre (SSIC).

* Typical effective capacity is the available capacity after system overhead (including flash media over-provisioning and RAID protection) as well as the data reduction benefits of pattern removal, deduplication and compression. This assumes data reduction of up to a multiple of 5 to 1.

† Maximum capacity refers to the effective capacity provisioning limit.

‡ Physical capacity is the available capacity after system overhead, including flash media over-provisioning and RAID protection.

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