Specifications

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Compaq HSG80 Array Controller ACS Version 8.4 Configuration and CLI Reference Guide
Battery Hysteresis
When charging a battery, write-back caching will be allowed as long as a previous
down time has not drained more than 50 percent of a battery’s capacity. When a
battery is operating below 50 percent capacity, the battery is considered to be low, and
write-back caching is disabled.
CAUTION: Compaq recommends that you replace the ECB every two
years to prevent battery failure.
NOTE: If a UPS is used for backup power, the controller does not check the battery.
See “SET controller,” page 7–91 for information about the CACHE_UPS and
NOCACHE_UPS switches.