I have a volume of 400 gb total will 230 gb data on it. Can I snapmirror this on a smaller 300 gb volume..? thanks, prem
nope.
snap mirror is a front to vol copy. think of vol copy as "dd" ie: block level.
even if the target is larger than the amount of source actually used, the vol copy will fail if the target is smaller than the source.
-- email: lance_bailey@pmc-sierra.com box: Lance R. Bailey, unix Administrator vox: +1 604 415 6646 PMC-Sierra, Inc fax: +1 604 415 6151 105-8555 Baxter Place http://www.lydia.org/~zaphod Burnaby BC, V5A 4V7 The flogging will continue until morale improves.
I have a volume of 400 gb total will 230 gb data on it. Can I snapmirror this on a smaller 300 gb volume..? thanks, prem
I have done this in the past using ndmpcopy, which does preserve ACLs, etc.
You can find the software on the NOW site: now.netapp.com.
nope.
snap mirror is a front to vol copy. think of vol copy as "dd" ie: block level.
even if the target is larger than the amount of source actually used, the vol copy will fail if the target is smaller than the source.
-- email: lance_bailey@pmc-sierra.com box: Lance R. Bailey, unix Administrator vox: +1 604 415 6646 PMC-Sierra, Inc fax: +1 604 415 6151 105-8555 Baxter Place http://www.lydia.org/~zaphod Burnaby BC, V5A 4V7 The flogging will continue until morale improves.
I have a volume of 400 gb total will 230 gb data on it. Can I snapmirror this on a smaller 300 gb volume..? thanks, prem
On Fri, Dec 22, 2000 at 10:46:27AM -0800, Tom Haynes wrote:
I have done this in the past using ndmpcopy, which does preserve ACLs, etc.
You can find the software on the NOW site: now.netapp.com.
As some1 just explained it to me, ndmpcopy is much less efficient than snapmirror, because snapmirror only transfers the blocks that have been changed. So if you have a WAN with 2 sites and you wanna synchronize data between them for disaster prevention, then ndmpcopy become prohibitive on a fair size volumes ( say, 500GB and higher ). Please correct me if something above doesn't make sense.
Igor
On Fri, 22 Dec 2000, Lance R. Bailey wrote:
snap mirror is a front to vol copy. think of vol copy as "dd" ie: block level.
Does this include or exclude snap reserve space? Vol copy does not require that you duplicate snapshots of a volume, so I assume SnapMirror is the same?
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Brian Tao -
Igor Schein -
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Tom Haynes