Hardware manual

Group Administration Group monitoring
15–21
• Cache battery status and NVRAM battery status. See Table 15-20 and Table 15-21 for descriptions of battery
status and possible solutions where appropriate.
•
Model number.
• Boot ROM version.
• PS Series firmware version.
An empty slot means that a control module is not installed
or has failed.
For information about
replacing a control module, see
the Hardware Maintenance manual for your array model or
contact your PS Series support provider. Do not remove a failed control module until you have a replacement.
The Memory Cache panel displays the cache mode. Control module and ba
ttery status affect the cache mode.
Write-through mode might impair performance. Identify why the cache is in write-through mode and correct the
problem, if necessary. See About write cache operations on page 6-
11.
Control module status
Table 15-19 describes the control module status, descriptions, and how to solve any issues.
Table 15-19: Control Module Status
Status Description Solution
active Serving I/O to the member. None needed; informational.
secondary Mirroring cache data from the active
con
trol mo
dule.
None needed; informational.
Cache battery status
Table 15-20 describes the control module cache battery status, descriptions, and how to solve any issues.
Table 15-20: Cache Battery Status
Status Description Solution
ok Battery is fully charged. None needed; informational.
failed Battery failure. Contact your service provider for
i
nform
ation about replacing batteries.
missing battery Battery is missing. Contact your service provider for
inform
ation about replacing batteries.
low voltage Battery is below the limit for normal
operation.
If the battery status is low voltage
for an exte
nded period of time, contact
your PS Series service provider for
information about replacing batteries.
low voltage, is charging Battery is charging but is still below the
l
imit for normal
operation.
If the battery status is low voltage,
is charging for an extended period
of time, contact your PS Series service
provider for information about replacing
batteries.
good battery, is charging Battery is charging but has enough
char
ge for normal operation.
None needed; informational.