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- Description
- Specifications
IBM feature #EJBB is the Storage Backplane Base DASD 8 SAS 2.5" HDD/SDD bays option for the IBM Power System E950, machine type 9040 (model 9040-MR9), CCIN 2D37. It is the base-DASD version of the system's internal storage backplane: one backplane is required in each E950, and #EJBB gives the server up to eight SAS drive bays together with four NVMe bays. It is available with an initial order or as an MES upgrade.
The eight 2.5-inch SAS bays take hard disk drives or SSDs and are SFF-3 bays. The four NVMe bays take NVMe U.2 drives, 2.5-inch 7 mm small form factor, and each NVMe drive carries its own controller and connects over PCIe Gen3, and each drive is a separate PCIe endpoint that can be assigned to its own logical partition or Virtual I/O Server.
A single PCIe3 RAID SAS Adapter Quad-port 6 Gb x8 for MR9 (#EJ0K, CCIN 57B4) must be installed in slot C12, and that one adapter drives all eight SAS drives. The SAS adapters behind the #EJBB and #EJSB backplanes offer RAID 0, 5, 6 and 10, and hardware RAID 5T2, 6T2 and 10T2 are available depending on the storage adapter feature. The alternatives are #EJ0B, a backplane with no SAS drives and no SAS adapter, and #EJSB, a split backplane that needs two adapters in slots C9 and C12 with four SAS drives each. An E950 can be ordered with #EJBB and one 300 GB SAS hard disk drive (#ESNK) and no NVMe drive.
| Feature code | #EJBB |
| Description | Storage Backplane Base DASD 8 SAS 2.5" HDD/SDD bays |
| Machine type | 9040 (IBM Power System E950, 9040-MR9) |
| CCIN | 2D37 |
| SAS drive bays | 8 (2.5-inch SFF-3, HDD or SSD) |
| NVMe bays | 4 (NVMe U.2, 2.5-inch 7 mm) |
| Required SAS adapter | one #EJ0K PCIe3 RAID SAS Adapter Quad-port 6 Gb x8 for MR9, slot C12 |
| RAID | 0, 5, 6, 10 (5T2, 6T2, 10T2 depending on adapter feature) |
| Alternative backplanes | #EJ0B (no SAS drives), #EJSB (split, 4 + 4 SAS) |
| Order type | initial order or MES |