FlashSystem 900 Product Guide
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InfiniBand interface card
IBM FlashSystem 900 supports four two-port InfiniBand 40 Gbps cards. A total of eight ports of 40 Gbps
InfiniBand connections are supported per IBM FlashSystem 900.
The InfiniBand card ports can connect to Quad Data Rate (QDR), Double Data Rate (DDR), or Single
Data Rate (SDR) InfiniBand HCAs by using the SCSI RDMA Protocol (SRP). IBM FlashSystem 900
InfiniBand interfaces support SRP only.
Table 4 lists the supported InfiniBand interface card.
Table 4. Supported InfiniBand interface card
Item
Feature code
Ports
QDR IB 4 Port Host Interface Card
AF16
Eight ports of 40 Gbps QDR
InfiniBand
IBM MicroLatency modules
FlashSystem 900 provides configurable IBM MicroLatency module capacity. All modules are
hot-swappable. It is important to configure the amount of storage needed correctly as it is not possible to
dynamically add additional storage.
FlashSystem 900 can be populated with up to 12 x 1.2 TB IBM MicroLatency modules in increments of 4,
6, 8, 10, or 12; or up to 12 x 2.9 TB or 5.7 TB IBM MicroLatency modules in increments of 6, 8, 10, or 12.
These modules of either 1.2 TB, 2.9 TB, or 5.7 TB cannot be intermixed. Capacity can be upgraded by
purchasing the AF23 (1.2 TB), AF24 (2.9 TB)) or AF25 (5.7 TB) IBM MicroLatency module feature codes
as MES upgrades. Here are the upgrade paths:
Using AF23 (1.2 TB)
z
Start with 2.4 TB and grow to 4.8 TB 7.2 TB 9.6 TB, or 12 TB
Using AF24 (2.9 TB)
z
Start with 5.8 TB and grow to 11.6 TB, 17.4 TB, 23.2 TB, or 29 TB
Using AF25 (5.7 TB)
z
Start with 11.4 TB and grow to 22.8 TB, 34.2 TB, 45.6 TB, or 57 TB
Table 5 lists the supported IBM MicroLatency modules.
Table 5. Supported IBM MicroLatency modules
Description
Feature code
Maximum quantity supported
1.2 TB MLC IBM MicroLatency
Module
AF23
12
2.9 TB MLC IBM MicroLatency
Module
AF24
12
5.7 TB MLC IBM MicroLatency
Module
AF25
12
