We have a virtual DFSR server that crashed because the brand new hard drive started spewing bad blocks at us. We shut it down and are awaiting a replacement. We are hoping to just turn on the VHD when it is copied in order to have data from all
servers sync up, as there is 'lost' data on that dead server we need to recover.
Will this happen properly if it has been down for a week or so? Should we just remove the dead server from the share and try to re-add it to recover the missing stuff from the PreExisting folder?
You could set a DFS member as the primary member in the replication group, it will be considered to be the authoritative member and it wins out during the initial replication. This will overwrite the current replicated folder content on the non-primary member.
You could try a command to set another server as primary:
Dfsradmin Membership Set /RGName:<RG Name> /RFName:<RF Name> /MemName:<Member Name> /IsPrimary:True
Note: please do a backup incase newer data is overwritten by the old version.
If the dead server is removed from DFS replication group, when add it back, it will be considered as a new added server and do an initial replication, so files on the server will be overwritten by the "primary server" you set when adding the old server back.
Make sure the dead server is removed completely. You could refer to the following article to check if it is correctly removed:
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