I have to work out a backup solution which involves 2 data servers - one live and the other a "hot" standby. Both with Windows Server.
Any data that is written to live must replicated to standby. Total data on live can be up to 12TB.
Data is only files, no SQL databases something like that.
No access to standby from clients unless live server goes down.
I need software that can handle the replication and keep the servers in synch. At any one time, the last data that was synchronized to standby must not be older than 30 minutes.
The three options I'm looking at is DFS-R, HP StorageWorks Mirroring and Acronis TrueImage.
I don't have experience with any of them in this scenario and was hoping that someone with experience could give thier opinion.
Of course you are welcome to suggest other software solutions.