
Chapter 5: Configuration Parameters
Drive-side Parameters 5-21
7. Drive Predictable Failure Mode(SMART):
Disabled
Disables S.M.A.R.T.-related functions
Detect Only:
When the S.M.A.R.T. function is enabled, the controller will
send a command to enable all drives' S.M.A.R.T. function, if
a drive predicts a problem, the controller will report the
problem in an event log.
Detect and Perpetual Clone
When the S.M.A.R.T. function is enabled, the controller will
send a command to enable all drives' S.M.A.R.T. function. If
a drive predicts a problem, the controller will report the
problem in an event log. The controller will clone the drive if
a Dedicated/Global spare is available. The drive with
predicted errors will not be taken off-line, and the clone drive
will still act as a standby drive.
If the drive with predicted errors fails, the clone drive will take
over immediately. If the problematic drive is still working and
another drive in the same logical drive fails, the clone drive
will resume the role of a standby spare and start to rebuild
the failed drive immediately. This prevents a fatal drive error
if yet another drive should fail.
Detect and Clone + Replace
The controller will enable all drives' S.M.A.R.T. function. If a
drive predicts a problem, the controller will report the problem
in the form of an event log. The controller will then clone the
problematic drive to a standby spare and take the
problematic drive offline as soon as the cloning process is
completed.
8. Auto-Assign Global Spare Drive:
The “Auto-Assign” function automatically assigns any “new”
drives that are not included in logical configurations as
Global Spares.
9. Drive Delayed Write:
When enabled, firmware allows disk drives to utilize their
built-in buffer, e.g., SATA drives, firmware default is Enabled
on subsystems equipped with single RAID controller. On
subsystems equipped with dual-redundant RAID controllers,
the default is Disabled.
10. Drive Spindown Idle Delay(sec):
Subsystem firmware stops supplying 12V power source to
hard drives when hard drives have not received I/Os for a
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