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- Description
- Specifications
IBM feature #AH2E is a 30.72 TB SAS 2.5-inch flash drive for the IBM FlashSystem 9500, machine type 4666. It is supported on the SFF expansion Model AFF only, with a maximum of 24 per enclosure. The IBM FlashSystem 9000 SFF Expansion Enclosure Model AFF offers up to 24 2.5-inch flash drives in a 2U 19-inch rack-mount enclosure with two expansion canisters, 12 Gbps SAS ports for attachment to the FlashSystem 9500 control enclosures and AC power supplies.
The AFF drives can be formatted as DRAID 1 or DRAID 6. The supported drive capacities are 1.92 TB, 3.84 TB, 7.68 TB, 15.36 TB and 30.72 TB, which correspond to features #AH2A, #AH2B, #AH2C, #AH2D and #AH2E.
The IBM FlashSystem 9500 supports a maximum SAS chain weight of 3, and each AFF enclosure has a chain weight of 1, so three AFF expansion enclosures can sit on each of the two SAS chains. Up to 72 drives in three AFF SAS expansion enclosures are supported per SAS chain on the FlashSystem 9500, and each 4666-AFF enclosure adds a value of 1 to the SAS chain weight. A 5U expansion enclosure cannot be mixed with 2U expansion enclosures on the same SAS chain.
| Feature code | #AH2E |
| Description | 30.72 TB SAS 2.5 Inch Flash Drive |
| Machine type | 4666 |
| Capacity | 30.72 TB |
| Interface | SAS |
| Form factor | 2.5-inch flash drive |
| Supported enclosure | Model AFF |
| Maximum per enclosure | 24 |
| Enclosure | 2U, up to 24 drives |
| Drive formats | DRAID 1 or DRAID 6 |
| SAS chain weight per enclosure | 1 |