WEAVER, Simon \(extern... wrote:
> Is there a good way to work out how many slots I could well need when going 
> from 12 x LTO2 drives to a SL500 8 x LTO4 drives


What library are you currently using?  I ask because you might be better off 
keeping it.  I'm currently dealing with a full rack sized SL500 with 14 drives 
and it's the biggest pain of a robot that I've ever had to deal with.  I'd 
never get another SL500, unless it was for a small implementation or a test 
environment.  They are far from enterprise level, and if you?re doing 8 LTO4's, 
I'd say you are at that level.

As for LTO4's, you almost need some kind of disk staging, snapshot backups, or 
VTL to really get the performance out of them.  Doing a bunch of small client 
backup over the network will not push your LTO4's fast enough to keep them 
busy, and you run into a serious bottleneck as ewilts was mentioning.

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