The existing NetApp Storage System will be replaced by a new system. This requires that the entire memory contents are transferred to the new system. This also includes the iSCSI storage areas. in which they will Stop Cluster Service and Change Services “Startup Type” from “Automatic” to ”Manual” , Shutdown passive server, same steps will be done in active server and they will Disconnect iSCSI connection, connect new iscsi drive, Area (configure iSCSI Initiator and start service) previous iSCSI-data are used ' Turn on passive server, Connect new iSCSI-Area (configure iSCSI Initiator and start service) previous iSCSI-data are used start SQL Service SQL Server Browser(Automatic) Process completed if they do the above process then what will happen to the present sql server 2005 in the clustered environment do i need to do any changes from sql server side please suggest.
You should be fine as long as the drive letters are the same just as @ken Johnson has stated. You mentioned SQL 2005, is this a Windows Server 2003 cluster or Windows Server 2008? I would highly recommend running the cluster validation checklist again to validate the new disk are properly configured for the failover cluster. Just because you have new disk and the OS can see them doesn't mean they can failover and act properly. Any change in your environment should warrant and updated validation. Just my 2 cents. I have been burned to many times from "This shouldn't break anything" when it indeed did.