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howto:encrypted_partitions 2011/05/09 19:33 howto:encrypted_partitions 2017/09/06 18:38 current
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Regarding cryptsetup looks like it is not nesessary because you can setup encrypted device using only device-mapper & dmsetup tool (see http://www.saout.de/misc/dm-crypt/) Regarding cryptsetup looks like it is not nesessary because you can setup encrypted device using only device-mapper & dmsetup tool (see http://www.saout.de/misc/dm-crypt/)
-====== Performance in case of dm-crypt ====== + 
-It is really nightmare. F.E. DNS-323 use Samsung 1,5TB drive.+ 
 + 
 +==== Performance in case of dm-crypt ==== 
 +It is really nightmare (if you think to move 1TB data from not encrypted disk to encrypted). F.E. DNS-323 use Samsung 1,5TB drive.
<code bash> <code bash>
dd bs=10M if=/dev/zero of=zero count=149 dd bs=10M if=/dev/zero of=zero count=149
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dd bs=10M if=zero of=/dev/null count=149 dd bs=10M if=zero of=/dev/null count=149
</code> takes ~8min (3MB/sec) for encrypted drive and 30s for normal drive (49MB/sec) </code> takes ~8min (3MB/sec) for encrypted drive and 30s for normal drive (49MB/sec)
-From one point of view it is normal to see some movies and play sound from that drives+ 
 +From another point of view it is not so bad and you can see Full DH movies and play sound from DNS-323 in case if it is connected to your WiFi which is not faster than 2MB/sec.

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