1) The compressed file is corrupted because there is a problem on the tape. To know if this is the problem, please issue the following command on the TSM Server: audit volume <volume_name> fix=no If there is any problem reported, you could move the data from that volume to a new one (see command MOVE DATA) and try again the restore. 2) There are communications problems between the TSM Server and the TSM Client and the results is that the file is corrupted during the transmission. If you use a gigabit Ethernet adapter on the Server please upgrade the card driver (AIX® platform) or add provided by SUN suggested changes to some system network options which have resolved this problem (SUN platform). 3) Please verify with your network support if during the restore there are no any problems between the TSM Client/Server that is originating the file corruption.