In my original NAS post I forgot to mention that I had done some measurements on power consumption. Since this is critical for a 24/7 system, I'd like to share my findings:
- idle, disks spinning: 30.5 W
- idle, disks standby: 24.0 W
Hardware as described in the post, disks are 2 x WD20EARS and 2 x WD10EARS.
I recently also did a crypto benchmark which yielded quite impressive results (for that low-cost type of CPU):
alex@nasbox:~$ cryptsetup benchmark # Tests are approximate using memory only (no storage IO). PBKDF2-sha1 155298 iterations per second PBKDF2-sha256 94160 iterations per second PBKDF2-sha512 62060 iterations per second PBKDF2-ripemd160 144352 iterations per second PBKDF2-whirlpool 76204 iterations per second # Algorithm | Key | Encryption | Decryption aes-cbc 128b 465.8 MiB/s 1080.0 MiB/s serpent-cbc 128b 42.8 MiB/s 140.0 MiB/s twofish-cbc 128b 104.1 MiB/s 118.1 MiB/s aes-cbc 256b 354.0 MiB/s 862.3 MiB/s serpent-cbc 256b 45.1 MiB/s 141.1 MiB/s twofish-cbc 256b 106.5 MiB/s 117.0 MiB/s aes-xts 256b 881.6 MiB/s 883.6 MiB/s serpent-xts 256b 138.5 MiB/s 139.2 MiB/s twofish-xts 256b 117.6 MiB/s 117.1 MiB/s aes-xts 512b 750.1 MiB/s 751.4 MiB/s serpent-xts 512b 139.5 MiB/s 139.2 MiB/s twofish-xts 512b 118.5 MiB/s 117.0 MiB/s