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RJVBC
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Contributor

Migrating VM's not using iSCSI interfaces....

My issue involves a single ESX 5.1 host with 2 iSCSI devices presenting from the same NAS over 10GbE and 4 vSwitches in the following configuration:

vSwitch0 (4 x 1GbE)

  • VM Machine Port Group (10.131.24.0/22 subnet)
  • VMKernel (Management)

vSwitch1 (4 x 1GbE)

  • VM Machine Port Group (10.131.10.0/23 subnet)

vSwitch2 (iSCSI Path 1) (1 x 10GbE)

  • VM Kernel Port (iSCSI, vMotion, Management)

vSwitch3 (iSCSI Path 2) (1 x 10GbE)

  • VM Kernel Port (iSCSI, vMotion, Management)

vSwitch2 and vSwitch3 are added to the iSCSI "Network Configuration" providing dual paths.  Each iSCSI device "Multipath" configuration is set to round-robin and both are hosted on the same NAS.

Both VMFS devices are connected via iSCSI to the ESX host and both the NAS and the ESX hosts are connected via a private 10 GbE subnet using a Juniper EX4550 switch as well as to the same subnet as vSwitch0.

I now want to migrate/move the VMs and templates from the first iSCSI device to the second iSCSI device.  All VM's are powered off and I've converted all templates back to VM's for the migration.

I've tried doing "Migrate to a different datastore".  I've also removed a VM from inventory and used the datastore browser to move the VM files to a different datastore.

In all cases, the data is transferred over vSwitch0 and not vSwitch2/3.  Since vSwitch0 is not assigned to the iSCSI Software Adapter, I don't fully understand what I'm doing wrong and why it won't use the faster 10GbE adapter to transfer the data.

Can someone help enlighten me?  I'm missing something.

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