User Manual

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Vess R2000 Series Product Manual Promise Technologies
CreatiNg a luN CloNe (Clu)
A LUN clone is an exact copy of the original LUN or logical drive, including all the data it contains, at one point
in time. Use a LUN clone as a backup or to migrate a LUN from one system to another.
lun clOne OPtiOns
The Vess R2000 includes a new LUN Clone option, the Online LUN Clone. This is used to create a copy of
a LUN without stopping I/O on the source LUN. All data on the source LUN is copied and synchronized in a
background operation. The cloning process runs in the background and continues until it is explicitly stopped by
theadministrator.ThisisincontrasttotheOfineLUNClonewhichrequiresthatthesourceLUNgoofineduring
the process.
FirstdecideiftheLUNisclonedtoeitheraDiskArrayoranotherLogicalDrive,thenchoosetheOfineorOnline
option for the method used.
Important
TheactionofcreatinganOfineLUNmomentarilytakestheoriginalLUNorlogical
driveofine,meaningnobodycanreadorwritetoit.
A LUN clone has the same capacity, stripe size, read and write policies as the orignal LUN. However, the LUN
clone can be a different RAID level. The choice of RAID levels depends on the disk array. And if you have multiple
disk arrays, you can create the LUN clone on a different disk array than the original LUN.
This action requires
Super User or Power User privileges.