12-12-2021 08:06 PM
Backup Exex 2010 R3, 13.0 rev.5204(64bit), SP2, Hotfix 180429
Backup job setting: Append to media, overwrite if no appendable media is available
Media Sets setting: Infinite-allow Append
The media data is used 30% only, but the media was overwrite
No any setting change before, but the overwrite problem occurred this time, message as below:
"No appendable media could be mounted. Switching to overwrite operation on scratch media."
12-12-2021 08:14 PM
The 2010 version is pretty old but the way we write ( append and overwrite) to tape media has remained the same. Please check this technote veritas.com/support/en_US/article.100017917 and see if it helps.
By any chance does the tape show end marker unreadable when the job switches to overwritable media?
12-14-2021 06:03 AM
If your job needs more then one media, then we need an overwriteable tape: see the following paragraph from the TN Gurvinder shared: