Cache Backup Unit
AssemblyBattery and flash that flush dirty cache to NVRAM on power loss so writes survive an outage. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Cache Backup Unit
2 top-level lines as of r136220| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Backup Battery / Supercap | raid-array-backup-battery | 1× | 1 | · | part |
| 2 | Backup Flash | raid-array-backup-flash | 1× | 1 | · | part |