I have a quantum superloader 3 tape library with one 8 tape magazine and using backup exec 12 to run our backups. I am able to run backups to brand new tapes as well as backup to disc without problems. I run into issues when I try to recycle old tape. My old tape is no older than 1 year and has been written only once. I have tried to inventory and re-lable the tape. I have tried removing it from the media set and doing a quick and long erase. When the tape then begins being written to the backup ususally fails with either the drive needs to be cleaned or that the tape cannot be written to. The drive is cleaned on a regular basis and when I recieve the dirty drive error and clean it and try the backup again I get the same issue. Can I rely on the LTO 3 tape to be written to more than once? Does anyone have procedure that has worked for them to recycle tape? Thanks.