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Re: [Networker] backup data over the net
2008-07-31 13:56:25
On Jul 31, 2008, at 1:09 PM, Teresa Biehler wrote:
Ok, there has been lots of discussion lately about how to encrypt data
that is written to tape. This brought up a question in my mind. What
about all the backup data that is being sent over the network. Is
this
a secure transmission of the data? Is the data encrypted?
The answer depends on how you encrypt the data, or more importantly,
where you encrypt it. If you use NetWorker's built-in encryption
feature, the encryption happens on the client. The benefit there is
that the data is encrypted before it gets transmitted over the
network. Two disadvantages are: 1) the encryption happens on the
client so it consumes more processor cycles on the client and 2) no
key encryption management. If you encrypt the data using LTO-4 tape
drives, then the data remains unencrypted in transit, but there's no
hit on the clients. Either way, you lose the ability to compress the
data onto your backup media and recovers are going to be slower.
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