012764-004 is an HP 256MB Battery-Backed Write Cache (BBWC) memory module designed specifically for the Smart Array P400 SAS RAID controller. HP documentation identifies it as the Smart Array P400 controller cache module, 256MB, with 405836-001 as the corresponding spare part.
- Part Number: 012764-004
- Manufacturer: HP / HPE
- Product: Smart Array P400 Controller 256MB Cache Module
- Cache Capacity: 256MB
- Cache Type: Battery-Backed Write Cache (BBWC)
- Memory Type: 40-bit DDR cache memory
- Controller Compatibility: HP Smart Array P400
- Application: RAID write caching and cached-data protection
- Compatible Systems: HP ProLiant systems supporting the P400 controller, including DL380 G5, DL385 G2/G5, DL585 G2/G5, and HP Integrity rx2660 configurations.
- Included: 1 × 256MB P400 cache module
- Related Spare: 405836-001
- Related Assembly: 012765-000
- Related 512MB Module: 012764-003 / 405835-001
- Related Battery: 381573-001 / 398648-001
- Compatibility Note: This is the cache module only, not the complete Smart Array P400 controller. A compatible P400 battery and battery cable are required for the battery-backed cache configuration.
- Weight: Approximately 0.10 lb estimated.
