Software
We used recently Nucleus to recover an SLR100 tape and we get back about 80% of the surface intact; but you must think that each situation is different. http://www.nucleustechnologies.com/backup-recovery.html
An other software but we don't know about it. http://www.kerneldatarecovery.com/buy-tape-backup-recovery.html
Recovery service may be useful but we asked for quote and it was a bit heavy; that 's the reason we choose to recover from Nucleus and I think they should haven't been better. http://www.aldownloading.com/data-recovery/LTO-4-ultrium-4-recovery/LTO-4-ul... http://www.krollontrack.com/data-recovery/data-recovery-services/tape-recove...
Hope it help
--- Michel Donais