16–4 General maintenance and best practices
Hitachi Unified Storage Hardware Service Guide
Replacing the battery
Hitachi Unified Storage systems contain a limited-life battery that will
eventually need to be replaced. Do not use the storage system once the
usable battery time has expired.
• To replace the battery on a CBXSL/CBXSS/CBSL/CBSS, you replace the
cache backup battery installed in the Power Unit (see Replacing the
cache backup battery on CBXSS/CBXSL/CBSS/CBSL Controller Boxes
on page 5-3).
• To replace the battery on a CBL, you replace the cache backup battery
(see Replacing the cache backup battery on a CBL Controller Box on
page 5-6).
WARNING: Do not disassemble the battery; otherwise, you could get burned
or receive an electric shock. To prevent the battery from exploding, handle
the battery according to the procedures in this section.
NOTE: If a storage system is powered off for more than six months, the
battery may sustain unrecoverable damage. To avoid this situation, charge
the battery more than three hours every six months.
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