Areca 24/4 Internal/External Port Pcie 3.0 12 Gb/s SAS/SATA Raid Controller 2Gb Cache - Manual (Page 159)

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WEB BROWSER-BASED CONFIGURATION
Note:
The currently encryption feature only support key file in -
terface to encrypt volumes.
electronic circuitry for the cryptographic engine embedded in
the ROC and operating at full channel speeds. The hardware
encryption does not impact the performance of ARC-1883
RAID controller and can implement on any kinds of HDD that
is transparent to the user, the OS, and applications.
Encrypting your volume can give your data an extra layer of
protection be yond setting up a controller password. Encryp-
tion will conceal your volume’s data and make accessing the
files almost im possible for anyone who does not know your
encryption key. Data saved in the volume will be hidden by
Algorithm developed by Areca Technology. With this scramble
process, no one can see and access into the hidden volume
data without access key. ARC-1883 adapters support 128- and
256-bit encryption keys using AES (a key size of 128, or 256
bits), or password (a variable key size). Each encryption key
size causes the algorithm to behave slightly differently, so the
increasing key sizes not only offer a larger number of bits with
which you can scramble the data, but also increase the com-
plexity of the cipher algorithm. ARC-1883 adapters provide
five new key options in the ‘Full Volume Encryption:”Disable’,
“256Bit key, Password”, “256Bit key, AES”, “128Bit key, Pass -
word”, “128Bit key, AES”. You can generate the new key by
CLI utility or API code function.
This volume encryption function can only work with ARC-1883
series with any kinds of HDD. You can follow below steps to
enable the function.
1. Create volume set with “Full Volume Encryption” capability
in the web management.
2. Use CLI “vsf genkey” command or API code to generate key
file.
3. Use “Download Volume Key File” in the web management
or use CLI “vsf dlkey” command to download volume key
file into firmware and unlock the volume.
4. Follow step 3. to unlock volume if volume locked.