Just as background only:  W

hen we had a single office, we had 2 Snap servers (identical models). One was 
the primary and the other a backup. Each user mapped 3 shares from the primary 
as X, Y and Z drive. We used the Snap EDR software to create a "replicate" and 
a "backup".  The replicate was a daily snapshot which could be mapped as X, Y 
and Z if the primary failed. The backup was  a multilevel with 10 days of 
incremental backups. The EDR software could restore from the backup to the 
primary but not to another folder on the backup. Which is why we need both a 
replicate and a backup. Also because of the way EDR tracked the incremental 
backup, we could not just re-map our X,Y and Z drives to the backup. (We tried 
and could not use the backup though I could be wrong about why).

As to why we can't implement this in our two office setup, there are two 
issues: a) the older snap server is not vista compatible (which is why we got 
the newer ones!) b) do not have another EDR license (not sure if we really 
liked it that much to be honest). 

As a side note, our original plan was to use the two new snap servers as 
primary and backup but have the backup physically located in one office and the 
primary in the other. This where the interoffice communication problems have 
prevented us from doing what we had planned. We are still trying to solve the 
interoffice communication problem but we have not been successful in finding an 
appropriate strategy yet. The reasons why are not relevant to my question about 
Amanda.

Alright so back to the original question:

By mirror, I mean synchronized or replicated folders on the two NAS devices. 

To know if we need the mirror or replicate separately from the multilevel 
backup depends on how the files are stored in the backup. If all the most 
recent files are in folder and can be accessed (i.e. not compressed or altered 
by the backup software) then I can see us being able to remap to the backup 
folder directly (and thus not needing a mirror/replicate). Though I still have 
a gut feeling that using our backup as working files would not be a good idea.

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