Migrating to new Array

I assume mirrorview works something like

Hardisk1 is on Cx

Hardisk 11 is on Vnx

You mirror LUN Cx to Vnx so that Harddisk11 is then a copy of Harddisk1, and then you remove Harddisk1 and present Harddisk11 to the server.  This being the case you need to replace step 5 with:

• Deport diskgroup
• Remove old LUNS
• Scan disks in VEA so that VEA sees old LUNS are gone
• Present new LUNs
• Scan disks in VEA so that VEA sees new LUNS
• Import diskgroup

You can migrate to new arrary completely online if you use SFW mirroring, i.e, you can leave your cluster running while you break mirror - the process being:
 

1. Add the new LUNs from new array to the diskgroup
2. Add a mirror in VEA (or whatever tool you normally use to manage SFW) to the volume(s) on the old LUN and select new LUN on new array - repeat for all volumes on all LUNs
3. When mirror has finishing syncing, remove mirror of volume on original LUN - this is fine to do online
4. When all old LUNs are empty, you can remove LUNs from the diskgroup.

I believe you can do this in VOM also which automates the steps for you

The process is the same concept as for SF on UNIX, - see posts:

https://www-secure.symantec.com/connect/forums/add-disk-vcs-shared-disk-group

https://www-secure.symantec.com/connect/forums/array-migration-using-vxvm-solaris-vcs-cluster

https://www-secure.symantec.com/connect/videos/storage-provisioning-and-array-migration-vom-sf

Mike

Hi Karim,

If you have the SFW-HA product, then this entire operation can be done online with no downtime to the application using the mirror feature of SFW.  We have customers do this all the time.

There is also no need to deport the diskgroup when removing the old luns.  You will need to break the mirror and then remove the old luns from the disk group.  VCS and your application will continue working with the new mirror plex on the new array without skipping a beat.

If you are not completely comfortable with the process, please open a case with Symantec Technical Support.  We will be happy to answer any questions that you have ahead of time so that your array migation occures without application interuptions.

thank you,

Wally