Grass Valley Network Attached Storage System Serial ATA Network User Guide v.1.0.04 - Manual (Page 143)

Chapter 10 RAID System Administration
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system, and enabling it on one controller automatically enables it on the
other controller. If write cache mirroring is enabled, write cache data is
duplicated in cache memory of each controller. Exactly half of the write
segments on each controller are reserved for the peer controller data. With
write cache mirroring enabled, static cache segment allocation is
automatically enabled and cannot be disabled. With write cache mirroring
enabled, write caching is allowed when both controllers are enabled. The
default is disabled.
5. Enter the critical temperature (in degrees Celsius) at which the critical
alarm will sound, if the alarm is enabled. If Unit Attention is enabled,
reaching the critical temperature causes a critical Unit Attention condition.
It is recommended, although not required, that you set the critical
temperature to the same value on both controllers in a dual controller system.
6. Enter the warning temperature (in degrees Celsius) at which the warning
alarm will sound, if the alarm is enabled. If Unit Attention is enabled,
reaching the critical temperature causes a warning Unit Attention condition.
It is recommended, although not required, that you set the warning
temperature to the same value on both controllers in a dual controller system.
7. Click Save to save the information you entered.