Product manual

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VTrak A-Class Product Manual Promise Technologies
pdm
Usage
pdm[-a<action>][-d<DaId>][-s<SeqNo>]pdm-astart-d<DaId>-s<SeqNo>-p<PdId>pdm-a
stop-d<DaId>-s<SeqNo>
pdm-apause-d<DaId>-s<SeqNo>
pdm-aresume-d<DaId>-s<SeqNo>
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 uncongured 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
uncongured 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. 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>  Species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.