Dot Hill Systems AssuredSAN 6004, Справочное руководство CLI, Страница: 96 / 363

96 Alphabetical list of commands
set degraded-disk-threshold
Description Sets criteria for the system to identify degraded disks based on a trend of degrading quality of
service. Degrading quality of service includes disks that demonstrate a consistent or increasing
number of recovered errors (sense key 1) or unrecovered errors (sense key 3).
When a configured threshold is reached, a degraded-disk policy is enacted. The policy is configured
with the set degraded-disk-policy command.
When a disk is identified as degraded, its health becomes
Degraded
, as does the enclosure health
and overall system health. If the disk is a member of a vdisk, the vdisk’s health will also become
Degraded
.
If a disk accumulates errors before a threshold value is set, and the newly set value has already been
reached, an event will not be logged until the next time that threshold is reached.
Changing a threshold after a disk has been degraded will not automatically clear the degraded
status. The disk will remain degraded.
Before changing a threshold, run the
clear degraded-disk command for all disks to reset their health
to OK and to clear their error counts.
A degraded-disk policy will never fail a disk that would result in the loss of data, such as failing a
disk in a non-fault-tolerant vdisk.
Min. role
manage
Syntax
set degraded-disk-threshold
name threshold-name
target recoverable-errors|unrecoverable-errors
[threshold-a period.duration.threshold-value | clear]
[threshold-b period.duration.threshold-value | clear]
[threshold-c period.duration.threshold-value | clear]
[threshold-lifetime threshold-value | clear]