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4911
August 18th, 2017 12:00
Move a VM from one esxi cluster A to another esxi cluster B with same VMAX lun
I want to Move a VM from one esxi cluster A to another esxi cluster B with same VMAX lun in same vcenter
I have a masking view A as below
initiator group A, port group A and storage group A with lun id ABC
I have the new cluster which is cluster B which also needs access to lun id ABC since I want to migrate a VM from one esxi cluster to the other, I have performed the masking view below
initiator group B,port group B and storage group B with lun id ABC
after assigninh, I see that in vcenter, cluster B is able to see that lun and is identifying it as a same data store name there.
question is, can I move the VM now from one esxi cluster to another esxi cluster given that both the data store has access to that lun ABC?
also once I complete the migration, can I remove the masking view A>
dynamox
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August 21st, 2017 08:00
Move a Virtual Machine between Clusters |VMware Communities
If you no longer have any VMs registered on cluster A, sure you can remove masking.
jigarshivam13
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August 22nd, 2017 07:00
Thanks
question, when I mask the same vmax lun twice to different esxi clusters , does vcenter knows about that lun that it's the same and has data store already created for that one even though its coming from different FA ports?
dynamox
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August 22nd, 2017 07:00
when you present that LUN to cluster B and rescan, vCenter will find an existing VMFS file system / datastore and make it available. It will not automatically register VMs on that LUN in the inventory. Once you shutdown VM on cluster A and delete it from inventory there, you can register it on cluster B.
jigarshivam13
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August 22nd, 2017 08:00
ok. I created a test vm for this purpose and did this exercise, I was able to vmotion that test vm to new cluster B and did not face any issue, I also unmasked the testlun from VMAX which is used by testvm from cluster A and the datastore associated by testlun showed inaccessible in cluster A and when i did the re scan on all hosts in cluster A, the data store didn't show up anywhere on cluster A and the testvm is up and running on cluster B,
am I missing anything? to me it looks like a VM is migrated online from cluster A to cluster B..
dynamox
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August 23rd, 2017 05:00
both clusters managed by the same vCenter server ?
jigarshivam13
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August 23rd, 2017 06:00
yes they are managed by same vcenter server.
dynamox
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August 24th, 2017 06:00
if clusters are managed by the same vCenter, you can migrate VMs online.
TonyHoover21
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August 29th, 2017 11:00
I'm a little late to the party here, but as long as the 2 Clusters are in Enhanced Linked Mode then you should be able to do the vMotion live (Barring that the network side of things is in order as well)