moving data from FS from one storage to FS in another storage

kmvinay · 11-09-2010, 01:11 AM

Hello,
I need to move 5TB of data from DS8100 to DS3400 storage.This 5TB of data is spread across 5 file system and mounted on one AIX server.
Same file system structure is created on DS3400 storage and mounted on the same AIX server.

Can anyone provide the best & possiable ways of moving data from one FS to other FS with minimum time with transfer rate and time.

AlucardZero · 11-09-2010, 05:51 PM

Mount both and use rsync?

baznz · 12-06-2010, 11:57 PM

Alternatively and more efficiently you can do it at the LVM level, and not filesystem. Just assign the new san disks to the AIX server and extend the existing volume group. Do a migratepv from the old san disks to the new ones and then reduce the old san disks from the volume group. Delete the old san disks from the system.

chickenjoy · 12-07-2010, 12:29 AM

I suggest rsync to be safe too unless your comfortable with baznz's idea which is very much possible; but IMO transferring 5TB of data merits the downtime.

rsync example:

Code:

	# rsync -avrP /media/disk/source /home/user/destination
		-- /source/ = copy just the contents of 'source' into the destination
		-- /source = it first create a 'source' folder in destination and then copy the contents into it.

mesiol · 12-07-2010, 12:45 AM

Hi,

why don't you use AIX volume manager to create a host based mirror? create mirror containing old and new storage LUN's, mirror the data, drop the old storage from mirror and ready to go. This prevents you from downtime, un-synced data and will be faster than file based mirroring, because there is no filesystem layer betweeen.

Also for my understanding, how do you create a filesystem structure on a storage LUN?