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тАО08-02-2010 12:12 PM
тАО08-02-2010 12:12 PM
Move tons of large files from SAN to SAN
Need to move large amount of files roughly 2.5TB od data from one LVM mount directory to another with in the same server. What is the fastest way of doing this.
TIA
Sri
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тАО08-02-2010 12:30 PM
тАО08-02-2010 12:30 PM
Re: Move tons of large files from SAN to SAN
I understand
/dev/vgxx/data mounted /data
other
/dev/vgxx/datanew mounted /datanew
you want to move /data to /datanew.
is /datanew on another storage?
if yes, is there any other LV on the VG?
Regards,
Sooraj
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тАО08-02-2010 12:36 PM
тАО08-02-2010 12:36 PM
Re: Move tons of large files from SAN to SAN
Your right /datanew is on another SAN storage. It thas only one LV for 2TB.
TIA
Sri
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тАО08-02-2010 04:38 PM
тАО08-02-2010 04:38 PM
Re: Move tons of large files from SAN to SAN
If this is a one time copy, an fbackup pipe will be the fastest but be sure you use a config file to maximize readers processes and record sizes. fbackup will handle unlimited file sizes. dd will also work if the filesystem is idle (no changes during the copy). Here is a good link:
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1427976
Bill Hassell, sysadmin
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тАО08-02-2010 08:55 PM
тАО08-02-2010 08:55 PM
Re: Move tons of large files from SAN to SAN
For one copy only may be using cp (offline), fbackup and dd can be used, but definitely will take a long time depends on your server I/O, file type (size) etc.
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тАО08-02-2010 09:03 PM
тАО08-02-2010 09:03 PM
Re: Move tons of large files from SAN to SAN
You can do with rsync (two time sync, first one all the data , 2nd one the changed data, with incremental rsync .
You can also use EMC open Migrator. If using EMC storage platform. You have to create another vg (same structure) , say vg_DATA_new , and once data transfered during cutoff-offline session, you can rename it back to original name.
Hth,
Raj.
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тАО08-03-2010 04:51 AM
тАО08-03-2010 04:51 AM
Re: Move tons of large files from SAN to SAN
VxVM is offcourse the obvious solution. ;)
snapmirror/ snapshot the data from the original vxvm volume to the target vxvm volume and mount the snapshotted target volume to the new directory et voila, you have the fastest way to synchronize 2 vxvm volumes within the same vxvm diskgroup.
Offcourse, you will need first to convert the lvm volumegroup to a vxvm diskgroup, but thats pretty straightforward, and the vxvm snapshot functionality will require the "full" vxvm installed, i.e. a payable vxvm license is required.
Greetz,
Chris