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- Description
- Specifications
Attached directly to the PCIe fabric, the high-performance flash enclosure (feature #1500) is a 1U enclosure for 1.8-inch encryption-capable flash cards in the IBM DS8880 machine types 2831, 2832, 2833 and 2834 (models 980, 981, 98B and 98E). It integrates a fully redundant pair of flash RAID adapters and dual power supplies with integrated cooling fans, and the adapters also handle enclosure services for power and cooling.
The enclosure is installed with a minimum of sixteen 1.8-inch flash cards, 400 GB each, and an optional second set of 14 raises the total to 30; fillers occupy the empty slots when the second set is absent. Two of the first 16 cards are spares. Only RAID 5 arrays are supported: two 6+P+S array sites on the first 16 cards and two 6+P array sites on the second set. Raw capacity reaches 12 TB per enclosure, or 9.125 TB usable with RAID 5, and the flash cards support full drive encryption.
Each flash RAID adapter connects to an I/O enclosure over a Gen2 PCIe cable; on the DS8880 each cable is eight-lane, 4 GBps full duplex. An I/O enclosure pair supports up to two of these enclosures. The DS8886 takes up to four in the base frame and four in the first expansion frame, and the DS8884 takes up to two in the base frame and two in the first expansion frame.
| Feature code | #1500 |
| Description | High-performance flash enclosure |
| Machine types | 2831, 2832, 2833, 2834 (DS8884, DS8886) |
| Models | 980, 981, 98B, 98E |
| Form factor | 1U |
| Flash cards | 16 minimum, 30 with the second set of 14 |
| Card type | 1.8-inch, 400 GB, encryption-capable |
| Raw capacity | Up to 12 TB per enclosure (9.125 TB usable, RAID 5) |
| RAID | RAID 5 only |
| Controllers | Two flash RAID adapters |
| Power | Two supplies with integrated fans |
| Host connection | PCIe Gen2 cables, eight-lane 4 GBps on DS8880 |
| Per system | DS8886 up to 8, DS8884 up to 4 |