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- Description
- Specifications
Twelve SFF-3 SAS bays and one RDX bay in the system unit come from base storage backplane #EJ1C on the IBM Power S914, S924 and H924 (machine types 9009 and 9223). One integrated PCIe3 x8 SAS RAID internal adapter 6 Gb runs the bays; it carries CCIN 57D7 and adapter FRU 01LK399, works at 6 Gbps and has no write cache.
The controller supports RAID 0, 5, 6 and 10, plus JBOD for HDDs. RAID 5 needs at least three drives of the same capacity, RAID 6 needs four and RAID 10 needs two, and a hot spare works with RAID 5, 6 and 10. HDDs and SSDs can share the backplane but must sit in separate arrays, and 5xx-byte and 4 KB sector drives cannot share an array.
Feature #EJ1E adds a second integrated SAS controller and splits the twelve bays into two sets of six, each set run by its own controller. The integrated controllers occupy dedicated slots and take no PCIe slot. Write cache comes only with the expanded function backplanes #EJ1D and #EJ1M, which have dual IOA and write cache.
AIX, IBM i, Linux (Red Hat Enterprise Linux, SUSE Linux Enterprise Server and Ubuntu Server) and VIOS support this backplane. Drives mount on Gen3 trays, and SFF-1 and SFF-2 drives do not fit them. The SFF-3 bays are hot-plug, while the integrated SAS controllers have no concurrent maintenance.
| Feature code | #EJ1C |
| Description | Base Storage Backplane 12 SFF-3 Bays/RDX Bay |
| Machine types | 9009 (Power S914, S924), 9223 (Power H924) |
| Drive bays | 12 SFF-3 SAS plus one RDX bay |
| Controller | one integrated SAS controller, no write cache |
| CCIN | 57D7 |
| Adapter FRU | 01LK399 |
| RAID levels | 0, 5, 6, 10; JBOD for HDDs |
| Split option | #EJ1E (6 + 6 bays) |
| Operating systems | AIX, IBM i, Linux, VIOS |
| Interface speed | 6 Gbps |