Product manual

VTrak E-Class Product Manual
252
Replacing a Cache Backup Battery
The cache backup battery, also called a Battery Backup Unit (BBU) powers the
cache to preserve data that has not been written the physical drives. The battery
is located inside the RAID controller. Each RAID controller has its own battery.
The cache backup battery is replaced as an assembly. You do not have to power
down the RAID subsystem nor disconnect any cables from the RAID controller.
You need a No. 1 Phillips screwdriver for this procedure.
E830f and E630f
Removing the Old Battery
To remove a battery:
1. Verify that the battery LED is amber or red. See page 253, Figure 4.
2. Loosen and remove the set screw.
3. Grasp the handle and pull the battery out of the RAID controller.
Installing a New Battery
To install the battery:
1. Carefully slide the battery into the RAID controller.
2. Replace and tighten the set screw.
3. Verify that the battery LED is green.
Cautions
• Try reconditioning the battery before you replace it. See
“Reconditioning a Battery” on page 74 or page 174 for more
information.
• The battery assembly is replaced as a unit. Do not attempt to
disconnect the battery by itself.
• Installing the wrong replacement battery can result in an
explosion.
• Dispose of used batteries according to the instructions that
accompany the battery.
• While the battery is removed, your system is vulnerable to
data loss if the power fails while data is being written to the
logical drives.
• If power service has failed, do not remove the battery if the
RAID controller’s dirty cache LED is flashing. See page 253,
Figure 4.