we have 2 exchange 2003 enterprise edition servers on windows 2003, we are looking for a plan to be able to recover a hardware/software failures in a time frame of 1 hour max, we have 4 databases in the size of 800 GB collectively.
i need a recommendation of a backup software that would accomplish this, we are going to purchase a server to work as a standby/host one or 2 of the databases, and we are willing to purchase a raid5 nas as well.
is there a way that the backup software will create a backup copy of the database on the nas with delayed replication ( to reduce the possibility of replicating corruption) and in case of a database failure/corruption i would be able to point exchange to the nas?
if there is a hardware failure i can create the databases on the new server and still point it to the nas copy, then after hours i can copy it to the local drives on the server, this way my down time won't exceed an hour.
your help is greatly appreciated...