Xsan and NetVault Backups?

Hello All,
Current setup:
17 Xserves
5 X RAIDs
1 Promise RAID
ADIC Scalar 100 (using BakBone NetVault)
Nothing Xsan'd yet
I am curious how you, if anyone, are backing up your Xsan to tape, specifically with NetVault or some similar backup solution. I would imagine that you can backup all of your Xsan data via the main Xsan node. I guess I am not totally familiar with Xsan setup at this point but are all of the RAIDs actually mounted on the main Xsan node, so that they can be accessed by NetVault's main server via ethernet? Or would I install Xsan on my NetVault's main server and pipe it into the Xsan fibre switch, backing up via fibre directly?
I will be creating an Xsan in the future and I am looking for any recommendations having to do with NetVault and Xsan.
Thx!

I admin a StorNext Storage Manager setup. We have a Scalar i500 with 120 slots for LTO-3 to cover a 27TB StorNext SAN with Xsan clients. It keeps a copy of all managed files and does not require dedicated nightly activity to keep us backed up. It also allows for nearline storage. It can be tricky though, and you need to be careful about how you implement it. I like the HSM approach better since it backs up everything on the fly in the background as a function of the filesystem instead of requiring long stretches of time to do full and incremental traditional backups. It is more expensive though. You really need to need it to justify the cost.
I used an Atempo Time Navigator backup server in the past with an Xsan. Similar to your BakBone in structure. You just need to have your backup controller as a client of the SAN. At that point the software just thinks the SAN volume is local and can back it up like anything else. The nasty part is bandwidth and time, but only because SAN volumes tend to be so large and nights and weekends are only so long. You can put the Scalar on the FC fabric, but you will need to zone it away from the SAN and have the BakBone box straddle the zones. That does not really offer a bandwidth advantage over directly attaching the Scalar to the BakBone box though (as long as your HBA has the port count to do that).

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Message was edited by: seanmcgu
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