Figure 24 Blower
2. Fault indicator1. Status indicator
4. Blower 13. Blower 0
Table 23 Blower status indicators
DescriptionFault indicatorStatus indicator
Normal operationOffOn
Blower failureOnOff
Cache battery
Batteries provide backup power to maintain the contents of the controller cache when AC power
is lost and the storage system has not been shutdown properly. When fully charged the batteries
can sustain the cache contents for to 96 hours. Two batteries are used on the EVA8x00 and a
single battery is used on the EVA6x00 and EVA4x00. Figure 25 (page 57) illustrates the location
of the cache batteries and the battery status indicators. See Table 24 (page 58) for additional
information on the status indicators.
Figure 25 Cache batteries
2. Fault indicator1. Status indicator
4. Battery 13. Battery 0
The table below describes the battery status indicators. When a battery is first installed, the fault
indicator goes on (solid) for approximately 30 seconds while the system discovers the new battery.
Then, the battery status indicators display the battery status as described in the table below.
HSV controllers 57
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