I am running Windows Server 2008 (R1) and SQL Server 2008 (R1) in a HA cluster.
I have DELL Equillogic storage for the databases and cheap NAS storage for my backups. I found that if the backup LUNs were not part of the Dependency list I could still back up to them, but I could not have SQL Server automatically delete old backups, just would not work.
I added the Backup LUNs (there are 2) to the SQL Server Dependency list and I could then back up to, and delete old backups from the LUN. Life seemed good.
I ran into an issue where I need to rebuild one of the LUNS. I failed to make it part of a RAID cluster when I set it up and now it needs more space so I can't extend the LUN. I need to take the LUN offline and recreate it on the RAID cluster of the cheaper NAS.
Our SQL server has to be up 24 x 7. When I removed the NAS from the SQL dependencies list I didn't see any errors appear right away, so I then went to the iSCSI connector and dropped the connection to the backup LUN. SQL server stopped responding and went into 'administrative script mode' I believe it said.
What is the process to remove that LUN from the SQL Server dependencies and drop the iSCSI connection so that I can build a new LUN and attach it back in? (Without dropping the SQL server if possible)
My solution was to reconnect to the iSCSI connection, add the dependency back in and reboot as I needed this thing back up and running ASAP.
I realize any time you do anything there is a risk, but I would think it SHOULD be possible to do this.