User manual

SuperTrak EX Series User Manual
212
Summary
The pdm command activates Predictive Data Migration (PDM). PDM replaces a
suspect physical drive, such as a drive with a PFA condition, with a different
drive. The replacement drive can be an unconfigured drive, a global spare, or a
dedicated spare to this disk array.
During PDM, the data on the suspect drive is transferred to the replacement drive
while the logical drive remains online.
After PDM, the replacement drive becomes part of the disk array. The suspect
drive become unconfigured and any PFA condition remains on it.
This command starts, stops, pauses, and resumes a PDM and monitors the
progress of a running PDM.
A PFA drive cannot be used until you clear the PFA condition. To clear the PFA
conditon of a physical drive, please refer to phydrv command on page 212.
Note that the destination drive must be the same media type, HDD or SSD, as
the other physical drives in the disk array.
Options
-a <action> Specifies the action to perform.
list (Default) Displays the active and paused PDMs and their
status.
start Starts a manual PDM.
stop Stops a PDM.
pause Pauses a PDM.
resume Resumes a paused PDM.
-d <DA ID> Specifies which disk array on which to perform the PDM.
-s <sequence Num> Specifies the sequence number of the suspect drive.
-p <PD ID> Specifies physical drive ID of the replacement drive.
Examples
pdm
pdm -a start -d0 -s2 -p10
pdm -a stop -d0 -s2
phydrv
Usage
phydrv [-a <action>] [-p <PdId>] [-c <Pd count>] [-v]
phydrv -a mod -p <PdId> -s "<list of settings>"
phydrv -a locate -p <PdId>