Hi

I have 2 McData DS24M2 attached to the DMX1000. The current firmware is at 6.02.00.

I would like to upgrade the firmware to 9.6.

On these 2 SAN switches, we have AIX, Solaris and HP-UX 11i.

As the servers are mission-critical, I would like to do it the fabric firmware  online upgrade, one switch at a time.

For AIX, Solaris and Windows, we have PowerPath. For Powerpath, we can set the HBA to maintenance mode.

For HP-UX, we are using pvlinks. As we are on MCSG, if we disable 1 HBA, will it cause a failover?

Thanks