Appendix E: Replacement Parts; Battery Unit - Hitachi G400 Hardware Reference Manual

Appendix E: Replacement parts

Part replacement is essential for maintaining the high performance of the system. Replacing
system components is covered by the maintenance service contract.

Battery unit

Battery lifetime
The battery life time is affected by the battery temperature. The battery temperature changes
depending on the intake temperature and height of the storage system, the configuration,
operation of the controller boards and drives, charge-discharge count and others. The battery
lifetime will be three to five years.
Treatment
Use the storage system in a place where the ambient temperature is 86°F (30°C) or less on
average.
Periodic parts replacement is required. If you have a maintenance service contract, parts are
replaced periodically according to the terms of the contract.
Note: The battery protects the data in the cache memory in an emergency, such
as a sudden power failure. In these cases, follow the normal power down
procedure. If not, the battery might reach its lifespan earlier than expected and
become unusable within three years. When replacing the battery, follow the given
procedure for disposing a used battery.
Replacement period
The battery lifetime (intake temperature is 30 degrees C or less.) in the standard environment
is as shown below.
Hitachi Virtual Storage Platform G400, G600 Hardware Reference Guide
Appendix E: Replacement parts
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