Please insert overwritable media.
My enviroment consists of a HP StorageWorks Ultrium 1760 stand-alone drive...with which I want to backup a small number of servers (~10) mostly Hyper-V VMs...using BE2012.
My backup scheme is a B2D2T....So backup is done on a SAN disk atached to the BE server and then immediately duplicated to tape.
The schedule is simple...FULL backup every friday....differentials during the week. For this I have created 2 Media sets "Daily" with overwrite protection of 2 days....and "Weekley" with overwrite protection of 3 weeks...and both have append period set to infinite.
Now the problem is...all jobs start at 11PM...and they are automatically queued up to run one by one....but after a certain number of jobs....it just gives out the message "Tape "XXXX" is overwrite protected.......please insert overwritable media" (Sorry I can't reproduce the exact error message right now). And spits it out...
Does anyone know the reason for this?
There is no space problem....backups are rather small..so there are hundreds of GB left on the tapes.
Tapes are all brand new LTO4...I tried either with tapes that I had pre-associated to the media sets I created...and with never touched tapes (scratch media), and the behavior is the same.
What I would expect from this setup is that backups would be appended to the tape till no space is left..and since I have rather small size backup..even If I were for some reason to leave the same tape in the drive it would still have space to do backups for at least a few weeks...but yet it just fails after a few jobs wanting other overwritable media.
I checked and on some ocasions the tapes would end-up as beging "End marker unreadable"...so in that case it's clear why it couldn't append data to them..but in most cases the tapes would be fine..with append period marked as "Infinite" and yet it would spit them out and request overwritable media.
I`ve been searching for a solution for a few days but haven't managed to find anything so any help would be hugely appreciated.