3Ware 9590SE Series Quick Install Manual - page 25

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21

Chapter 2. Installing the 

Battery Backup Unit

The Battery Backup Unit model BBU-9550SX-01 is an add-on that 

can be attached to either the 3ware 9590SE or the 9550SX RAID 

controller to supply power to the memory module from an attached 

battery pack in the event of a system power loss. This allows the 

controller to use write-caching for optimal performance and not be 

exposed to data loss in the event of a system power failure. When 

fully charged, the battery preserves the contents of the controller 

cache memory for a limited period of time (up to 72 hours). When 

power is restored, cached data is flushed to disks. 

Caution:

Both the 3ware RAID controller and the BBU 

are sensitive electronic equipment and can be damaged 

through electrostatic discharge. When installing the 

BBU on the controller, be sure you are grounded. Use a 

grounding strap, or work on an ESD-protective mat. 

Do not remove the 3ware controller or BBU from their 

protective bags until you are properly grounded. 

Handle the 3ware RAID controller by its edges or by 

the metal bracket at its end.

Do not touch any pin, contact, lead, or component on 

the 3ware RAID controller. 

Important:

 The battery is a heat-sensitive component. 

The cooler the battery, the longer the battery lasts. If pos-

sible, place the controller with the BBU in a slot with 

good airflow, away from components that generate the 

most heat in the system, such as video cards. 

Note:

 The battery will drain if it is plugged into the BBU 

and there is no power to the unit. Wait to plug the battery 

into the BBU until the system is ready for use.