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Pdm 368 – Promise Technology 2-Year Extended Warranty for VessR2000 RAID Head User Manual

Page 395

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368

Vess R2000 Series Product Manual

Promise Technologies

pdm

Usage

pdm [-a ] [-d ] [-s ]

pdm -a start -d -s -p

pdm -a stop -d -s

pdm -a pause -d -s

pdm -a resume -d -s

Summary

This command allows the user to start, stop, pause or resume a PDM as well as to check on

the progress of a running or paused PDM.

PDM (Predictive Data Migration) is an operation to replace a drive in the disk array, which

has a PFA condition, with a destination physical drive. The destination physical drive can be

an unconfigured drive, a global spare, or a dedicated spare to this disk array.

During PDM, the data on the PFA drive will be transferred to the destination drive while

the IO remains going on. After PDM, the destination drive becomes part of the disk array; the

PFA drive will become unconfigured and PFA condition will remain on.

The PFA drive cannot be used for further configuration until the PFA condition is cleared

by the user.

To clear the PFA condition of a physical drive, please refer to

phydrv

command with option

-a clear.