Thank you, I will have look surely.

There is a lot Dos cmd command for Cluster management. So we can use them via xp_cmdshell.

http://technet.microsoft.com/en-us/library/cc779044(v=ws.10).aspx

Activity Monitor can help you if you have sql 2005>.

if you problem solved, plesae post that...

did you have problem with port number?

This link can help you.

http://www.mssqltips.com/sqlservertip/1663/auto-notification-for-failover-of-a-server-and-restart-of-sql-server-services/

For this, you need to enable database mail(sql server 2008/2005) or sqlmail (sql server 2000

Check for orphaned users.

Check for Cross-database ownership issue.

to access sql agent jobs, a login needs to be assigned SQLAgentUserRole, SQLAgentReaderRole and SQLAgentOperatorRole (Operator is the most privileged one)

http://msdn.microsoft.com/en-us/library/ms188283.aspx

to run SSIS packages, you may need a...

Better post the Execution Plan.

Did you try with multiple destination backup files? also try to increase BufferCount, MaxTransferSize and BlockSize Parameters.

Test these scenario in a dev environment before production.

http://troubleshootingsql.com/2010/01/06/io-frozen-messages-while-taking-nt-backup-for-sql-databases/

refer this link to see if it helps you.

If i understand correctly, If your table has any non clustered index which might not be included in your REBUILD. Rebuild operation will only do "update statistics" of the concerned...