Restore from backup.
Deferred transactions - transactions that can't be rolled forward/back because of an offline file/filegroup. I would guess you have one or more files in the offline state (or maybe recovery pending), ones on that LUN that couldn't be recovered.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability