Has disk killed off tape?
Published 13 years ago
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Craig, OK....so you want to go "tapeless" and use DataDomain? That would mean paying double for the disk (one at your primary site and again at your remote replication destination) PLUS paying for a WAN link that is big enough to handle the traffic for the replication. And, yes, I realize that you will only be transmitting the changed/new blocks....but, consider that you will have new data as well as the changed data.
Now you have the data at the remote site....and you lose your DD at your primary site...now what? You perform restores from the remote back to the primary? Or do you go there with a truck and haul it back to your primary site?
It's a pretty expensive alternative to tape.