VMware Cloud Community
ngms27
Contributor
Contributor

vMotion and Physical Mode RDM's or in guest iSCSI

Is vMotion supported with Physical Mode RDM's or in guest iSCSI?

This is with ESXi 5.1, there seems to be conflicting opinions!

0 Kudos
2 Replies
vmroyale
Immortal
Immortal

Note: Discussion successfully moved from VMware ESXi 5 to vMotion & Resource Management

vMotion works with both p-mode RDMs and in-guest initiators. What do you mean when you say "there seems to be conflicting opinions?"

Brian Atkinson | vExpert | VMTN Moderator | Author of "VCP5-DCV VMware Certified Professional-Data Center Virtualization on vSphere 5.5 Study Guide: VCP-550" | @vmroyale | http://vmroyale.com
0 Kudos
MKguy
Virtuoso
Virtuoso

vMotion is NOT officially supported for pRDMs in case of Windows clustering due to SCSI persistent reservations:

http://blogs.vmware.com/vsphere/2013/07/the-difficulty-in-implementing-ptrdm-to-ptrdm-migrations.htm...

You cannot vMotion a VM which uses ptRDMs in MSCS clusters. This is because you switch the VM to access the storage through another HBA/initiator, so state changes such as SCSI reservations might be lost.

However, vMotion with non-clustered pRDMs IS supported.

In-guest iSCSI with clustering is also not supported according to the VMware Clustering Guidelines for Supported Configurations, though it probably should work fine:

http://kb.vmware.com/kb/1037959

(This article also shows that vMotion with pRDMs in clusters is unsupported as mentioned above).

-- http://alpacapowered.wordpress.com
0 Kudos