W dniu 2013-07-20 09:12, Ron Hawkins pisze:
Radoslaw,
I agree with your question up to a point. Encryption of data at rest covers
most of the disk related scenarios to do with data protection. It especially
makes my favorite soapbox of erasing disks with multiple overwrites a
redundant task.
But it is not encryption of data in flight. Data on the channel, in cache,
and transmitted from cache to cache by remote copy products is not encrypted
by controllers that support encryption of data at rest.
Well, I haven't considered encryption of the (FICON) network, simply
assumed the server room is safe enough. For remote copy see below
I don't have any problem with field, record or file level encryption, but
there is a downside if you are doing remote copy over a network, as it
encrypted data usually compresses very poorly. It's not a problem for
everyone.
100% agreed.
Arye, Decru used to provide encryption devices for SCSI on Fibre Channel,
but I don't know if they ever extended that support to FICON.
DWDM solutions provide encryption, despite of the protocol used (FICON,
SCSI-FC, Eth). Of course at the second end of DWDM it is again decrypted.
--
Radoslaw Skorupka
Lodz, Poland
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