User`s manual
With a RAID 1, RAID 5, RAID 6, or RAID 10 volume, you can also add a spare disk 
after the RAID is created.  
See Chapter 6: Tips and Tricks > Adding a Spare Disk for details. 
For more information on RAID, see Appendix C: RAID Basics. 
RAID Level 
You can set the storage volume as JBOD, RAID 0, RAID 1, RAID 5, RAID 6 or 
RAID 10. RAID configuration is usually required only when you first set up the 
device. A brief description of each RAID setting follows: 
RAID Levels 
Level Description 
JBOD  The storage volume is a single HDD with no RAID support. JBOD 
requires a minimum of 1 disk. 
RAID 0  Provides data striping but no redundancy. Improves performance 
but not data safety. RAID 0 requires a minimum of 2 disks. 
RAID 1  Offers disk mirroring. Provides twice the read rate of single disks, 
but same write rate. RAID 1 requires a minimum of 2 disks. 
RAID 5  Data striping and stripe error correction information provided. 
Building a RAID volume
and RAID mode. In gene
“RAID Building” then th
 may take time, depending on the size of hard drives 
ral, while the RAID volume building process is up to 
e data volume is capable to be accessed.  
NOTE 
Creating RAID destroys a
unrecoverable. 
ll data in the current RAID volume. The data is 
WARNING 
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