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March 25th, 2018 08:00
Move Compellents to new SAN Fabric
Hi. We will be moving our Compellents from Brocade Fabrics to Cisco SAN switches. We have two independent fabrics, and are in a VMware environment. Each host has 2 FC connections, one to FabricA and one to FabricB
I am trying to determine the safest way to do this.
One thought I had had would be to put a VMware host in maintenance mode, and them move his multi-pathing policy from Round Robin, to Fixed only selecting say FabricA. Once all the hosts are only sending storage data through FabricA.
- Put VMware host in maintenance mode
- Change his multi-pathing policy from Round Robin to Fixed, using only FabricA. However I get stuck here a bit since the VMware host is zoned to the Compellent Virtual ports which can cover any Fabric.
- If I get #2 sorted out, the theory is then all traffic should be going through FabricA at this point
- I can then move the VMware host fiber that was on FabricB(unused now) and move to Cisco switch
- Now it gets tricky to me
- At this point should I remove all FabricB from the Compellent Fault Domain, so no traffic at all, and then recable those HBA connections on FabricB to new Cisco?
At this point my mind starts getting fuzzy. But I guess after this its kind of doing the reverse. But still seems risky to me.
So basically looking for any advice on how to accomplish this. Thanks,,,
DELL-Sam L
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March 26th, 2018 09:00
Hello jedijeff,
Which Compellent san do you have as you didn’t list it in your post? Also, I am going to send you an email & if I can get your service tag so that we can make sure to provide you the best resolution to your issue.
Please let us know if you have any other questions.
DELL-Sam L
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7.6K Posts
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March 27th, 2018 13:00
Hello jedijeff,
We would recommend doing one fabric at a time. Since you have two independent fabrics, you can do one fabric at a time. So, move connections from Fabric A to the new Cisco switch and zone it back up correctly. Once Zone A to the new Fabric A Cisco switch is in place you can move Fabric B over to the new Cisco switch, setting up the new zones on Fabric B and moving them over.
There shouldn’t be any need to change the path selection policy on the VMware host as the fault domains on the SC are going to detect the down path and send traffic through the remaining up connections.
Please let us know if you have any other questions.