405148-B21 HP 512MB Battery Backed Write Cache at discount

405148‑B21 Specifications

HPE 512 MB Battery‑Backed Write Cache (BBWC) Upgrade Module

Manufacturer: Hewlett‑Packard Enterprise (HPE)
Manufacturer Model: 405148‑B21
Product Line: HPE Smart Array Accessories
Product Series: Battery‑Backed Write Cache (BBWC)
Product Type: Cache Upgrade Module (Accessory)
Product Name: HPE 512 MB Battery‑Backed Write Cache Upgrade

KEY FEATURES:
Device Type: Battery‑Backed Write Cache (BBWC) enabler cache module
Cache Memory: 512 MB DRAM
Battery Backup: Yes — provides power to cache during power loss
Battery Type: Ni‑MH battery, 4.8 V, ~5000 mAh
Battery Cable: 28 AWG, 16‑pin battery cable included
Upgrade Type: System specific cache upgrade

PERFORMANCE:
Improved Write Performance: Using the battery‑backed write cache improves write efficiency and accelerates storage controller performance (especially on Smart Array P400 controllers)

ENVIRONMENTAL & RELIABILITY:
Designed for enterprise server storage environments
Ensures data integrity during power loss with battery backup
Supports reliable 24×7 operation

COMPATIBILITY:
Compatible with HPE Smart Array P400 and P400i controllers
Works in a range of HPE ProLiant servers (e.g., Gen4–Gen7 era systems)

PHYSICAL:
Module Type: Cache memory module with battery and cable
Typical Weight: ~0.45 kg (module + battery)