Hi,

I currently have a similar setup, LTO-3 and one LTO-4 drive in a test 
SL500 robot.  I remember doing a something similar with an L700 back in 
the day with LTO-2 drives and STK 9840s, it had a lot of issues in that 
environment (L700), although I did not set that one up originally.

For the SL500, I have not noticed any issues to date (I have a single 
global scratch pool and it picks the correct tape for each drive) even 
when I have multiple storage units (LTO-3,LTO-4) in the same group.

Would I recommend this without thorough and extensive testing? Probably 
not.

Justin.

On Wed, 3 Mar 2010, Grigore Petrisor wrote:

> Hi
>
> I want to know if there is a possibility to mix LTO2 and LTO4 drives and 
> media in the same library StorageTek SL500
>
> with Netbackup 5.1.
>
> If there is documentation for this ... pls i want to know
>
> TY
>
>
>
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