Mixed LTO4 and LTO6 on same library

Hello,

We have mixed drives, LTO4 and LTO6 in the same library. LTO4 have one density (HCART3) and LTO6 a different density (HCART2).

All the LTO6 drives are mapped to just one media server. Now the question is: Can I have both types of tapes on the same Volume Pools? I mean on the Scratch, Netbackup, and Ironmountain pool for example.

For what I have read, I'm assuming no LTO4 drives will try to mount LTO6 tapes because of the different density, right? The only storage unit that will try to mount the LTO6 tapes is the one associated with the media server for the LTO6 drives (the only storage unit with HCART2 Density).

Is this correct or do I need to keep the tapes in separate Volume Pools?

Thank you.