This post is more than 5 years old
41 Posts
0
2524
July 12th, 2012 03:00
San copy Migration from CX to VNX
Hello Techs
I am doing a SAN copy migration from CX4-960 to VNX7500. I am using Push Sancopy incremental session. We have 2 node MS cluster machines & some standalone win2k8 R2. My question is to know that should I be resignaturing the destination lun on the Windows server after I assign the destination SAN Copy lun with the same drive letter to the host ?. To be precise this is what I am doing. 1 Win2K8 R2 server with EMC Legato Networker App. 1 x 500 GB lun assigned through CX4-960. I am starting an incremental session from CX4-VNX of that lun. During the cutover time I will bring down the networker app & remove the source lun from the Storage group & manually start the session to flush the pointers data. Once completed I will assign the new lun to the storage group. I am sure I have to manually assign the same drive letter which it had earlier but I am wondering if the networker services will start smoothly or it needs a disk resignaturing too. I know in MS Cluster even though I assign the same drive letter the cluster services wont be up unless i do a re-signaturing or run MS cluster recovery tool.
Any tips
thanks
Firoz
dynamox
9 Legend
•
20.4K Posts
0
July 12th, 2012 04:00
no no no ..no resignature, disk signature will be copied over by San Copy. You might have to go into Disk Administrator and bring the drive online and re-assign the drive letter but you should be doing nothing else.
dynamox
9 Legend
•
20.4K Posts
1
July 12th, 2012 05:00
you don't need to resignature anything, SAN Copy performs block level copy so everything gets copied to the target LUN ..including disk signature.
firozg
41 Posts
1
July 12th, 2012 05:00
Thanks dynamox. but does that apply to cluster services aswell. Just for the sake the same above example same server & application but in Microsoft cluster. I know the drive would be up in Windows disk mgmt but my cluster services wont be up right unless I do a resignaturing?
firozg
41 Posts
0
July 12th, 2012 05:00
roger that...
So this mean after the reboot the new luns will start from where the old lun left before the reboot. Thanks for your help dynamox
dynamox
9 Legend
•
20.4K Posts
1
July 12th, 2012 06:00
yes, i had a few instance where after San Copy migration the LUN would be in offline state ..so i had to bring it online in Disk Administrator and reboot the box to make sure all services started correctly.
In your final step, instead of removing the source LUN from the storage groupo, i would actually go ahead and drop the zones to CX4 so there are no LUNZ or anythign else leftover from CX4. If you need to roll back, simply shutdown the host, remove VNX zones and put CX zones back.
firozg
41 Posts
0
July 12th, 2012 06:00
this should be an ideal way i think. thanks for the tips dynamox