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7.2.2.
Enabling and Using Encryption
Here are the recommended steps to enable and use the AES256 hardware encryption
feature:
1. Start with a blank drive – any data that existed before encryption is enabled will be lost
once encryption is enabled as the data will be scrambled when sent through the decryption
engine.
2. Setup encryption key and power cycle the drive – the drive is now encryption enabled and
locked
3. Enter correct key – this will unlock the drive, it will appear to the host as a raw,
unpartitioned drive
4. Create a new partition and format the drive
5. The drive is now ready for use.
6. Upon power cycle, the encryption key must be re-sent and the drive will be usable again.
How the host system behaves after the correct encryption key is sent to the drive varies
from system to system, depending on the combination of BIOS, Chipset, OS and device
driver. On some systems, the drive will be automatically detected and mounted while in
others, it may be necessary to do a manual re-scan of the disks. Below are examples of how
to do manual disk re-scan for Windows and Linux:
•
Windows
Open Disk Management Tool. Sometimes this will automatically cause the drive to be
detected and mounted. If this does not happen, click on an empty spot in the Disk
Management window, then select 'Action' menu and click 'Refresh'; the drive will be
detected and mounted. Alternately, one can also use the 'rescan' option of Diskpart
command line tool.
•
Linux
In Linux, the system will detect the drive as a raw disk. It is necessary to delete the
entry of this disk from the OS and do a re-scan. The following steps are for Fedora.
As root, issue the following command:
echo 1 > /sys/block/<dev>/device delete
where
<dev>
is the device name (e.g. sda, sdb, etc.)
Next, find out the host# where the drive is attached; this can be done by issuing the
following command:
readlink /sys/block/<dev>
Where
<dev>
is the same device name used in the 1
st
command. Next, issue the
following command as root:
Cactus Technologies Limited
Industrial Grade -910S/910S-P1 Series SSD Product Manual
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