IBM FlashSystem 840

Accelerate business with the extreme performance of a data center-optimized, all-flash system

IBM FlashSystem 840 at a glance
Model 9840-AE1, 9843-AE1
Flash type eMLC
Flash module configuration 2 x 1 TB 4 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 12 x 4 TB
Raw capacity (TB/TiB) 2.75 TB/2.5 TiB 5.50 TB/5.00 TiB 8.25 TB/7.50 TiB 11.00 TB/10.00 TiB 13.74 TB/12.50 TiB 16.49 TB/15.00 TiB 21.99 TB/20.00 TiB 27.49 TB/25.00 TiB 32.99 TB/30.00 TiB 43.98 TB/40.00 TiB 54.98 TB/50.00 TiB 65.97 TB/60.00 TiB
RAID 0 usable capacity (TB/TiB) 2.06 TB/1.88 TiB 4.12 TB/3.75 TiB 6.18 TB/5.63 TiB 8.25 TB/7.50 TiB 10.31 TB/9.38 TiB 12.37 TB/11.25 TiB 16.49 TB/15.00 TiB N/A 24.74 TB/22.50 TiB 32.99 TB/30.00 TiB N/A 49.48 TB/45.00 TiB
RAID 5 usable capacity (TB/TiB) N/A 2.06 TB/1.88 TiB 4.12 TB/3.75 TiB 6.18 TB/5.63 TiB 8.25 TB/7.50 TiB 10.31 TB/9.38 TiB 12.37 TB/11.25 TiB 16.49 TB/15.00 TiB 20.62 TB/18.75 TiB 24.74 TB/22.50 TiB 32.99 TB/30.00 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
Encryption AES-XTS 256
Supported RAID levels 0, 5
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 FCoE
16 x 10 Gb iSCSI
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 (IBM SAN Volume Controller v7.3)
Management interfaces Command line interface (CLI), graphical user interface (GUI)
Environmental requirements 5°C – 40°C (41°F – 104°F) operating, 5°C – 45°C (41°F – 113°F) non-operating
-950 m – 3,050 m (-3,116 ft – 10,006 ft) altitude
8% – 85% relative humidity operating, 5% – 80% relative humidity non-operating
0.1 g root mean square (RMS) operational vibration (0.1 g 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 lb) fully loaded
Regulatory requirements Safety: IEC/EN 60950, CB Certificate, UL60950-1 CAN/CSA-C22.2 No.60950-1, CE Mark
Emissions Class A:
FCC—Verified to comply with Part 15 of the FCC Rules, Class A
Canada ICES-003, Issue 5, Class A
Japan VCCI, Class A
Australia/New Zealand AS/NZS CISPR 22:2006, Class A
Taiwan BSMI CNS 13438, Class A
GB 9254-2008 Class A, GB 17625.1
Korea KN22, Class A; KN24
Russia GOST R 51318.22, GOST R 51318.24, GOST R 51317.3.2, GOST R 51317.3.3
CE Mark (EN55022 Class A, EN55024, EN61000-3-2, EN61000-3-3)
CISPR 22, Class A