I have a File server at each of my 5 branch offices as they are manufacturing facilites and would be down if they couldn't access their processes on the file server thus a WAN outage would cripple them.
1. Leave file server, add appliance for backup locally (small 2 week retention) that replicates to larger appliance at datacenter (90 day retention) then to tape.
2. Bring File server to Datacenter and access across the WAN.
What are the pros v.s. Cons? I've come up with:
Pros: Local restore for best RTO, Data kept local in branch, WAN outage won't impact, Extended retention still recoverable from disk before having to go to tape. Additional backup to tape. No additional bandwidth.
Cons: cost of appliance and backup software to branch
What am I missing?