Hello

We have a SAS MD3220, running an old firmware (07.84.53.60). We want to expand the storage capacity adding a Md1200.

My doubts are:

1. Do we need to upgrade the firmware?
2. Can we upgrade the firmware to the latest, in one step?
3. Can we hot add the md1200? or We need to power off the servers and the MD3220?

Thanks and regards