QNAP TVS-472XT 4-Bay NAS Enclosure - Manual (Page 72)

Self-Encrypting Drives (SEDs)
A self-encrypting drive (SED) is a drive with encryption hardware built into the drive controller. An SED
automatically encrypts all data as it is written to the drive and decrypts all data as it is read from the
drive. Data stored on an SED is always fully encrypted by a data encryption key (DEK). The DEK can also be
encrypted by a user-specified authentication key (AK) that allows the SED to be locked and unlocked. Both
encryption keys are stored in the drive's hardware and cannot be accessed by the host operating system or
unauthorized users.
Creating an SED Secure Storage Pool
1. Go to Storage & Snapshots > Storage > Storage/Snapshots .
2. Perform one of the following actions.
NAS State Action
No volumes or storage pools Click New Storage Pool.
One or more volumes or storage pools Click Create, and then select New Storage Pool.
The Create Storage Pool Wizard window opens.
3. Click Next.
4. Optional: Select an expansion unit from the Enclosure Unit list.
Important
• You cannot select disks from multiple expansion units.
• If the expansion unit is disconnected from the NAS, the storage pool becomes inaccessible
until it is reconnected.
5. Select Create SED secure storage pool.
The list of disks only displays SED disks.
6. Select one or more disks.
Warning
All data on the selected disks will be deleted.
7. Select a RAID type.
QTS displays all available RAID types and automatically selects the most optimized RAID type.
Number of disks Supported RAID Types Default RAID Type
One Single Single
Two JBOD, RAID 0, RAID 1 RAID 1
Three JBOD, RAID 0, RAID 5 RAID 5
Four JBOD, RAID 0, RAID 5, RAID 6, RAID 10 RAID 5
Five JBOD, RAID 0, RAID 5, RAID 6 RAID 6
Six or more JBOD, RAID 0, RAID 5, RAID 6, RAID 10, RAID 50
Note
RAID 10 requires an even number of disks.
RAID 6
QTS 4.4.x User Guide
Storage & Snapshots 71