If you don't care about the LTO4s being able to read the LTO 2 tapes
just change the media type to something different on the 4s (HCART2 or
HCART3).  Netbackup automatically will not load the "wrong" media type
in the "wrong" drive even if it is technically capable of reading it.

On 1/19/10, Scott Jacobson <SJACOBSO AT novell DOT com> wrote:
> Ok, I'll try again.
>
> Looking through some archives there are various discussions, but not that I
> can see with an SL8500/ACSLS environment.
>
> So, if anyone with experience sharing LTO II and LTO IV drives in the same
> non-partitioned library, I'd appreciate in hearing about their bar code
> labeling and other requirements that allows each drive type to coexist and
> work with each other.
>
> BONUS QUESTION- Anyone with the each of these drive types that are running
> Vault Tape Duplication, any tips on what not to try or run?
>
> Thanks - sj
>
> I'll pass on own my assumptions and ask for clarifications from the group.
>
> NBU 6.5.1
> ACSLS 7.1
> SL8500 - standard basic install
>
> I'm not looking to do any partitioning which I believe requires ACSLS 7.2,
> but I'm not sure if 7.2 is still required for what I'm wanting to do.
>
> I'm going to add four LTO IV drives and what I understand is the new L4
> labeling versus the existing L2 suffix is all that is need for ACSLS,
> library and NBU to distinguish the between the differences of tapes and
> drives, or is the creation of another volume group also required.
>
> Any prerequisites, top down review or configuration requirements are
> appreciated - thank you in advance.
>
> Scott J.
>
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