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- Description
- Specifications
Feature 5887 is the EXP24S SFF Gen2-bay Drawer: a 2U, 19-inch expansion drawer with 24 hot-swap 2.5-inch SFF SAS bays, driven by PCIe SAS adapters or controllers over SAS X, Y or EX cables. The bays take Gen2 (SFF-2) drives, which do not physically fit the Gen1 (SFF-1) bays of POWER7 and POWER7+ system units or of the 12X PCIe I/O drawer (feature 5802).
The drawer is built in one of three modes, set by IBM manufacturing and not changeable after shipment. With AIX and Linux it can be four sets of six bays (mode 4), two sets of 12 (mode 2) or one set of 24 (mode 1); with IBM i it is one set of 24 (mode 1). Six SAS connectors on the rear are labelled T1, T2 and T3, two of each. There is no externally visible indicator of the mode, so avoid mixing modes within one order.
Adapters listed for the EXP24S include features 5805, 5901, 5903, 5913 and ESA1. Feature 5903 is always paired and uses a SAS X cable, and 5913 uses SAS YO cables. A second EXP24S can be cascaded with two SAS EE cables to give 48 bays on the same controller port. IBM lists 900 GB 10K SAS drives in a Gen-2 carrier for AIX and Linux (feature 1752) and 856 GB 10K drives for IBM i (feature 1738). The drawer rails are fixed length, made for 28-inch (711 mm) deep Power Systems racks.
The same series has the feature 5802 12X drawer and the diskless feature 5877 12X drawer. Power server parts are on the IBM POWER7 server parts page.
| FC 5887 Specs | |
| Feature code | 5887 |
| IBM name | EXP24S SFF Gen2-bay Drawer |
| Height | 2U, 19-inch rack |
| Bays | 24 hot-swap 2.5-inch SFF-2 (Gen2) SAS |
| Modes | mode 1 (1 x 24), mode 2 (2 x 12), mode 4 (4 x 6; AIX and Linux only) |
| Rear connectors | 6 SAS (2 x T1, 2 x T2, 2 x T3) |
| Cascade | second drawer via two SAS EE cables (48 bays) |
| Listed adapters | features 5805, 5901, 5903, 5913, ESA1 |
| Rails | fixed length, for 28-inch deep racks |
| Listed drives | features 1752 (900 GB 10K, AIX/Linux), 1738 (856 GB 10K, IBM i) |