I have some data still in traditional volumes that I would like to move to flex vols. The problem is I have snapshot data that we are keeping for a few more years. So is QSM my only option or can ndmpcopy work with snapshots?
Has anyone had/seen anything similar? Your thoughts are appreciated.
Thanks,
__________________________________________________________ Ken Williams Storage Administrator, Business Technology Operations Sacramento Municipal Utility District E-Mail: kwillia@smud.org Phone: (916) 732-6744 Cell: (916) 240-4213
You can use ndmpcopy, but it may chew up more data since ndmpcopy is a file-level transfer rather than a block-level transfer. But it's the same idea, transfer a snapshot, take a manual snapshot, lather, rinse, repeat.
-- Adam Fox adamfox@netapp.com
________________________________
From: Ken Williams [mailto:kwillia@smud.org] Sent: Tuesday, September 11, 2007 3:47 PM To: toasters@mathworks.com Subject: Migrating data from Trad vol to Flex vol
I have some data still in traditional volumes that I would like to move to flex vols. The problem is I have snapshot data that we are keeping for a few more years. So is QSM my only option or can ndmpcopy work with snapshots?
Has anyone had/seen anything similar? Your thoughts are appreciated.
Thanks,
__________________________________________________________ Ken Williams Storage Administrator, Business Technology Operations Sacramento Municipal Utility District E-Mail: kwillia@smud.org Phone: (916) 732-6744 Cell: (916) 240-4213
You can use ndmpcopy, but it may chew up more data since ndmpcopy is a file-level transfer rather than a block-level transfer. But it's the same idea, transfer a snapshot, take a manual snapshot, lather, rinse, repeat.
Or if you have NFS then use the Unix rsync command to copy each snapshot (oldest first). rsync only copies files that have changed, and if you use the --delete option it will delete files that have been deleted.
rsync -a oldest snapshot to new volume create snapshot on new volume rsync -a --delete second oldest snapshot to new volume create snapshot on new volume ...
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
We use rsync as well. Lot less traffic..
-----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Stephen C. Losen Sent: Wednesday, September 12, 2007 4:44 AM To: Fox, Adam Cc: Ken Williams; toasters@mathworks.com Subject: Re: Migrating data from Trad vol to Flex vol
You can use ndmpcopy, but it may chew up more data since ndmpcopy is a file-level transfer rather than a block-level transfer. But it's the same idea, transfer a snapshot, take a manual snapshot, lather, rinse, repeat.
Or if you have NFS then use the Unix rsync command to copy each snapshot (oldest first). rsync only copies files that have changed, and if you use the --delete option it will delete files that have been deleted.
rsync -a oldest snapshot to new volume create snapshot on new volume rsync -a --delete second oldest snapshot to new volume create snapshot on new volume ...
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
start) and then figure out the problem.
HTH rohit
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Fox, Adam -
Johnson, James A [HDS] -
Ken Williams -
Stephen C. Losen