StoreServ / Primera: Migrate RC Links from RCIP to RCFC

[Dardan]

Hello,

Wanted to check with you if somebody has experience or managed to migrate RC links from RCIP to RCFC. At the moment I have 2 arrays which synchronize between each other using RC links over IP. The intention is to migrate or start using RC links over FC.

What I was thinking is:

1) Stop RC Groups
2) Remove RC links over IP
3) Configure new links over FC
4) Start RC groups.

Any feedback / suggestion?

[Mahesh202]

Hi Dardan

Thank you for coming on HPE Community Forums,

I suggest you to follow the below mentioned steps.

a. Synchroniz Primary and Secondary.
b. Stop RC Groups.
c. Remove the Remote Copy links but if you may want to keep local volumes, .then use  -keepsnap
d. Create new Fiber Channel Target.
e. Create an New Group.
f. Map the Volume to RC groups.

I also suggest you to kindly refer to HPE 3PAR Remote Copy Software User Guide using below mentioned link.

https://h20628.www2.hp.com/km-ext/kmcsdirect/emr_na-c03618143-21.pdf

Hope this helps!

Regards
Mahesh202

[Sheldon Smith · Accepted solution]

It's more complicated. Remote Copy Groups (RCG) are tied to a particular protocol. You need new RCGs when switching.

The following needs to be done using the command line (ssh or remote CLI). You need to:

1. Let the RCG finish synchronization and stop it.
2. Get a list of volumes (showvv) with the primary volumes and snapshots.
3. If you have Peer Persistence, you must remove the vLUNs to the secondary volumes.
4. Remove the RCG and use the -keepsnap option.
5. Get a list of volumes (showvv) with the primary volumes, snapshots and new "keepsnap" snapshots.
6. Remove RC links over IP
7. Configure new links over FC
8. Create new, empty, stopped RCG
9. Admit a volume pair plus the primary volume's "keepsnap" snapshot to RCG. Repeat as desired.
10. Start RCG. Volume resumes from last synchronization thanks to the "keepsnap" snapshot.
11. Let the RCG finish synchronization
12. If you have Peer Persistence, now you can add the secondary volume vLUNs.
13. Done. Clean up the now obsolete "keepsnap" snapshots.

And as Mahesh202 replied, refer to HPE 3PAR Remote Copy Software User Guide. I'll add, refer to the HPE 3PAR Command Line Reference. All are available at the Hewlett Packard Enterprise Information Library.