upgrading fron 2.5.2 without disconnecting san luns (boot from san as well)

[vmpowered]

Boot device will stay visible so we can reinstall. But how about the rest of the luns, should I unmap or does that need to be done anymore.

[jonathanp]

it would be safer to unmap the VMFS luns and install and remap then upgrade to VMFS3.

if you let lun connected.. it is at your own risk.. make sure to choose correct lun and cross your finger

But some times there is a way to recover if upgrade fails.

Jon

[petedr]

I would recommend to disconnect but xtravirt has a whitepaper on installing esx 3 without disconnecting your SAN that may help if you decide to go that way.

[jonathanp]

he cannot disconnect if it is booting from san

[petedr]

you are right, my mistake, totally missed that and it is right in the subject.

[dominic7 · Accepted solution]

If you do a manual install you should be able to verify that you're on the right lun before you start deleting stuff, that should keep you reasonably safe. If you must do a scripted install then you may want to back up all your data first... at least the first lun which is the most likely one to get corrupted.

When you're doing a manual install you should be able to verify that you had more than one partition on the LUN you're about to install on to.

[vmpowered]

Ok looks like the majority say to unmapp the other devices. I have done both, just really have to know what your doing when not unmapping. Was actually trying to win a bet, but it seems I lost. Thanks everyone