I’ve got 11 hosts in a blade chassis that talk to a few different sans. Next weekend our network guy needs to do a LONG over due firmware upgrade on our switches in the chassis that handle this traffic. Right now we can’t fail over to one if the other is down (part of the reason we are doing this upgrade), so all the VM’s (about 300 in total) will need to be shutdown. My plan is to do that, then shut all the affected hosts down as well (and make sure the vcenter vm is documented to which host it’s running on). Once the firmware is done, bring the host up, check the datastores then start brining the vm’s back up.
Has anyone else ever had to do anything like this? Any gotcha’s or caveats I should be mindful of?
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