RAID cache modules — check if the battery is included and verify cache size. Ship unlocked and with test reports. Firmware must match the server. Key checks: Ship with test reports. Ship UNLOCKED.
Firmware must match server
PRODUCT OVERVIEW
IBM PCIE3 X8 CACHE SAS RAID INTERNAL ADAPTER
The IBM 57D8 is a Battery-Backed Write Cache pack, designed for enterprise RAID controllers in enterprise servers. It provides backup power to the BBWC module during unexpected power loss, ensuring cached write data is safely committed to flash memory. This is a high-volume replacement part in TPM market as enterprise servers remain widely deployed.
WHERE IT FITS
CONTROLLER→RAID_CACHE→57D8
SPECIFICATIONS
Part Number
57D8
Manufacturer
IBM
COMPONENT DIAGRAM
KEY FEATURES
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Battery-Backed Write Cache Module
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Rechargeable Battery Technology
Provides cache backup power for 48+ hours after power loss