Infrastructure overview:
1x HP EVA5000 (Active/Passive) - DEV & TEST VM's
1x HP EVA6000 (Active/Active) - LIVE Server VM's
6x ESX3.5 Build 153875
1x VC 2.5 U6
We have a requirement to upgrade the EVA5000 SAN to an Active/Active array, the EVA5000 hosts many datastores for DEV/Test guests.
We are not able to get downtime on the ESX servers during the upgrade as we have Live/Production servers accessing the EVA6000 SAN.
I am aware that I may need to re-signature the LUNS on the EVA5000 as calculated meta-data may change. (I dont need help with this as I have done this before and understand why)
Please review the procedure below, have I missed anything.
1. Shutdown the VM's that access the EVA5000 Datastores
2. unmount the EVA5000 LUNS using command "umount".
3. un-present the EVA5000 Storage to the ESX hosts.
4. upgrade the firmware on the EVA5000 controller.
5. present the EVA5000 LUNS back to the ESX hosts.
6. re-mount the EVA5000 LUNS.
7. rescan the HBA's
8. start the VM's we powered off in step 1.
8a. if EVA5000 LUNS are presented as snapshots, calculate new meta-data values for the EVA5000 LUNS using the re-signature procedure.
8a.i. re-register vms & templates.
9. change the pathing policy to "Fixed".
I am unsure how to perform steps 2 & 6 has anyone used the "umount" command before?
