I've tried to do some "brain work" on this and come to the following conclution:
1. How can I create a "Exchange consistent" snapshots to provide for the backup of Exchange (snapshot) with of the shelf software like Legato Networker (no Exchange API - just files).
Snapshtos will do for this. Just remember Exchange might be running for a while in a non-consistant mode before it decides to do a halt.
3. In case of a need for partial data recovery - is there a Filer local copy, the convert a part of a snapshot from RO to RW mode besides a through the host copy can can always be done but consumes a lot of bandwidth, time and resources. Would appreciate any thoughts/suggestions/enlightnings/pointers to the above subjects.
Partial recovery I think might be a problem which ever solution you chose. Exchenge, as far as I know, is working on a information blob. The best solution is to use snapshots and recover to a stable point in time, preferably some hours back in time.
If anyone has information on the workings/non-workings of Exchange and how it stores/not stores information. Pleas comment or I'll go further on my darkend path ;)
/// Regards, Jonas