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- Description
- Specifications
For the IBM Power System L922 (9008), feature #ELLL is the EXP12SX SAS Storage Enclosure with twelve 3.5-inch large form factor (LFF) SAS bays. Up to 12 hot-swap HDDs fit in 2 EIA of a 19-inch rack, carried in LFF Gen1 (LFF-1) trays. Only drives with 4 KB sectors (4096 or 4224) are supported, and SSDs are not. Redundant AC power supplies are included, with two power cords.
On Linux and VIOS the EXP12SX can be ordered with four sets of three bays (mode 4), two sets of six bays (mode 2) or one set of 12 bays (mode 1). The mode is a field-changeable software setting, but the change uses a specific procedure and improper changes can destroy RAID sets or let one partition reach another partition's data.
Four mini-SAS HD ports on the enclosure attach to PCIe3 SAS adapters, or to an integrated SAS controller in the Power L922, through SAS YO12 or X12 cables that have mini-SAS HD narrow connectors on every end. Supported adapters are the PCIe3 RAID SAS Adapter Quad-port 6 Gb x8 (#EJ0J, #EJ0M, #EL3B or #EL59) and the PCIe3 12 GB Cache RAID Plus SAS Adapter Quad-port 6 Gb x8 (#EJ14). Cable options include the 3 m copper X12 (#ECDJ) and the 1.5 m and 3 m copper YO12 (#ECDT, #ECDU). The rear of the enclosure carries six SAS connectors labeled T1, T2 and T3, two of each; in mode 1 two or four ports are used, and mode 2 or mode 4 uses two T2 and two T3.
| Feature code | #ELLL |
| Description | EXP12SX SAS Storage Enclosure |
| Machine type | 9008 (Power L922) |
| Drive bays | 12 x 3.5-inch LFF-1 (Gen1), hot-swap |
| Drive types | HDD only, 4 KB sector (4096 or 4224) |
| Rack space | 2 EIA, 19-inch rack |
| Modes (Linux/VIOS) | 1 (12 bays), 2 (2 x 6), 4 (4 x 3) |
| SAS adapters | #EJ0J, #EJ0M, #EL3B, #EL59, #EJ14 |
| Cables | SAS X12 #ECDJ; SAS YO12 #ECDT, #ECDU |
| Power | redundant AC supplies, two power cords |