Hardware options installation 48
2.
Install the hot-plug power supply, and lock the lever.
3.
Connect the power cord to the redundant power supply.
4.
Secure the power cords to the retaining clip.
5.
Connect the power cord to the power source.
6.
Be sure that the power supply LED is green ("
Power supply LEDs
" on page
14
).
7.
Be sure that the front panel external health LED is green ("
Front panel LEDs and buttons
" on page
8
).
IMPORTANT:
For maximum server availability, be sure that the two power supplies are
powered by separate AC power sources.
NOTE:
If the server will be shipped to another location after configuration, install a shipping
screw into each power supply.
Battery-backed write cache
The server supports the installation of the following BBWC options:
•
256-MB BBWC
•
512-MB BBWC
The BBWC consists of two parts: a battery pack and a storage cache module.
Along with the cache module, the battery pack provides transportable data protection, increases overall
controller performance, and maintains any cached data for up to 72 hours after the server loses power.
The NiMH batteries in the battery pack are continuously recharged through a trickle-charging process
whenever the system power is on.
CAUTION:
To prevent a server malfunction or damage to the equipment, do not add or
remove the battery pack while an array capacity expansion, RAID level migration, or stripe
size migration is in progress.
