Primary: Replicate data from 2 branch offices and the main office to a weatherproof offsite facility for disaster recovery.
Secondary: Eliminate branch office tape backups by utilizing the replicated data to perform the backups from. Utilize snapshots for daily backups.
3 Servers, 3 office location, Windows server 2k3, Voice/data Integrated T1 connections, VPN between all offices. Exchange maybe added at some point when it grows out of being simply a groupware package. No SQL with no plans on needing SQL currently.
I have looked at many alternatives, and at this point I need to know if spending the extra $$ for a Compellent Storageworks 3.5 or Dell/EMC SAN is worth it, or simply going with a NAS using Symantec Replication Exec or Xosoft Doubletake is the better more cost effective solution.(the Dell/EMC SAN would be running the replication exec or doubletake software anyway).
I really did like what I saw from Compellent, but I need more than that to justify the extra expense of a SAN solution over a NAS solution.
Any help greatly appreciated.