[K12OSN] OT: Off-site data replication

[Julius Szelagiewicz]

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>
> We are searching for methods of replicating important data to an
> off-site (but still connected to the network via fiber) location. For
> example, our mailserver (qmail and Courier IMAP) is backed up daily, but
> if we had a hard disk failure just before a backup, we would lose 24
> hours of data.
>
> What are some alternatives in replicating data in a relatively-live
> manner? A SAN is an option, but is something that extensive required?
> Would doing an rsync every 15 minutes bring the box to its knees?
>
I am backing up 8GB of text data using rsync over a T1 link. It takes
between 4 and 6 minutes. The time depends on the volume of data changed.
My suggestion would be to rsync first to a disk on a separate machinne on
local network, and then rsync from there. julius

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