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M Systems
IBM FlashSystem 900 at a glance
Model 9840-AE2, 9843-AE2
Flash type IBM-enhanced MLC
Feature code AF23 AF24 AF25
IBM MicroLatency module type 1.2 TB 2.9 TB 5.7 TB
Modules quantity 4 6 8 10 12 6 8 10 12 6 8 10 12
Usable capacity (TB) 2.2 4.5 6.8 9.1 11.4 11.4 17.1 22.8 28.5 22.8 34.2 45.6 57
Usable capacity (TiB) 2 4.1 6.2 8.3 10.4 10.3 15.5 20.7 25.9 20.7 31 41.4 51.8
Raw capacity (TB) 7.1 10.7 14.3 17.9 21.4 26.4 35.2 44 52.8 52.8 70.4 88 105.6
Raw capacity (TiB) 6.5 9.7 13 16.3 19.5 24 32 40 48 48 64 80 96
Minimum latency
Write 90 µs
Read 155 µs
Maximum IOPS 4 KB
Read (100%, random) 1,100,000
Read/write (70%/30%, random) 800,000
Write (100%, random) 600,000
Maximum bandwidth 256 KB
Read (100%, sequential) 10 GB/s
Write (100%, sequential) 4.5 GB/s
RAS features
Two-dimensional flash RAID – Module-level Variable Stripe RAID – System-level RAID 5 across modules Hot-swappable MicroLatency flash modules Tool-less module installation/replacement Concurrent code load Redundant and hot-swappable controllers, interface cards, power supplies, batteries and fans 99.999% availability*
Encryption AES-XTS 256
Connectivity options 16 x 8 Gb Fibre Channel  8 x 16 Gb Fibre Channel  8 x 40 Gb quad data rate (QDR) InfiniBand 16 x 10 Gb Fibre Channel over Ethernet (FCoE) 16 x 10 Gb iSCSI
Power 625 Watts (nominal), 1300 Watts (max)
Dimensions (H x W x D) 2U x 445.00 mm x 761.00 mm (2U x 17.50 in. x 29.96 in.)
Weight 34 kg (75 lb) fully loaded