HP ProLiant SL250s Gen8 Server Maintenance and Service Guide

Removal and replacement procedures 37
For more information about battery replacement or proper disposal, contact an authorized reseller or an
authorized service provider.
Flash-backed write cache procedures
The following types of procedures are provided for the FBWC option:
• Removal and replacement of failed components:
o Removing the cache module ("FBWC module" on page 37)
o Removing the capacitor pack ("FBWC capacitor pack" on page 39)
o Removing the capacitor pack holder ("FBWC capacitor pack holder" on page 40)
CAUTION: Do not detach the cable that connects the battery pack or capacitor pack to the cache
module. Detaching the cable causes all data in the cache module to be lost.
FBWC module
CAUTION: The cache module connector does not use the industry-standard DDR3 mini-DIMMs.
Do not use the controller with cache modules designed for other controller models, because the
controller can malfunction and you can lose data. Also, do not transfer this cache module to an
unsupported controller model, because you can lose data.
CAUTION: In systems that use external data storage, be sure that the server is the first unit to be
powered down and the last to be powered back up. Taking this precaution ensures that the system
does not erroneously mark the drives as failed when the server is powered up.
To remove the component:
1. Power down the server (on page 24).
2. Disconnect all peripheral cables from the server.
3. Remove the server from the chassis (on page 24).
4. Remove the front GPU cage (on page 26).
5. Remove the interposer board assembly (on page 26).
6. Remove the front GPU bracket (on page 27).
7. Remove the SFF hot-plug drive cage (on page 25).
8. Remove the PCI riser cage (on page 27).
CAUTION: When connecting or disconnecting the capacitor pack cable, the connectors on the
cache module and cable are susceptible to damage. Avoid excessive force and use caution to
avoid damage to these connectors.