I have a P6000x with later 3TB drives installed, currently it has a pending firmware update awaiting a restart. I know from issues when we attempted to update that V6 will not read the self-encrypting drives therefore failing the update halfway through.
As we are about to deploy replacement Compellent SAN's in the next few weeks I don't want this update to go ahead, mainly though I don't want the issues I had last time if we have a power failure and the SAN gets stuck halfway through an update.
Is there a way to remove/halt the pending update?
No there's no built-in mechanism to do that.
Not familiar with an issue with FW 6.x and SED drives. Unless you aren't running EQL certified drives? Which I suspect because a PS6000X wouldn't have 3TB drives.
There might be a way but it would require an outage and a reboot. No way around that. You should open a support case so support.
Otherwise you'd have to wait it out until the CML is online and the data migrated. If you don't already have backups I would strongly suggest you do backup at least critical data.
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