Hi and happy new year to all of you !
I would like to know if some of you have already implemented some LTO9 drives / tape libraries, and would love to get your feedback about it using Commvault.
My experience on the LTO9 media, using dual tape drives tape libraries, is quite bad.
The Media calibration / optimization / characterization phase that any new LTO9 media has to deal with is a pain, on my side.
Looks like on the first mount of a media -- let me reword it in my ‘old guy’ words -- it has to be somehow formatted to be able to be used by your favourite backup software.
Below a link to Quantum’s FAQs about this :
Short calculation : 50 LTO9 brand new tapes may require up to 2hours each of ‘calibration’ before they can be used. So this equals to 100 hours of ‘calibration’ before you could use the full 50 tape pool.. 😱
My 1st issue was that I had to adjust all the mount timeouts in that LTO9 Commvault tape library from a few seconds/minutes to up to 2 hours to deal with that.
But even after doing this, I still often get media errors, or drive reporting that the tape is bad, marking my brand new LTO9 tapes as bad.
As I have dual drive, I can’t check if it would react the same way with a single drive tape library. Maybe it would work fine as source and target drive would always be the same. But well, so far I could not test anywhere else than on big tape libraries.
As a result, I took the decision to revoke any LTO9 system and only buy LTO8 systems instead.
So, what about you ?
How are you dealing with LTO9 ?