Thecus N16000 Series User Manual page 53

NOTE
WARNING
RAID Level
You can set the storage volume as JBOD, RAID 0, RAID 1, RAID 5, RAID 6,
RAID 10, RAID 50 or RAID 60 (depend on model).
Level
JBOD
Model

N2800

N4800

N12000 series

N16000 series

N8900 series
RAID configuration is usually required only when you first set up the device. A brief
description of each RAID setting follows:
RAID Levels
Level
JBOD
RAID 0
RAID 1
RAID 5
RAID 6
RAID 10
RAID 50
RAID 60
WARNING
Building a RAID volume may take time, depending on the size of hard drives
and RAID mode. In general, while the RAID volume building process is up to
"RAID Building" then the data volume is capable to be accessed.
Creating RAID destroys all data in the current RAID volume. The data is
unrecoverable.
RAID 0 RAID 1 RAID 5
 
 
 
 
 
Description
The storage volume is a single HDD with no RAID support. JBOD
requires a minimum of 1 disk.
Provides data striping but no redundancy. Improves performance
but not data safety. RAID 0 requires a minimum of 2 disks.
Offers disk mirroring. Provides twice the read rate of single disks,
but same write rate. RAID 1 requires a minimum of 2 disks.
Data striping and stripe error correction information provided.
RAID 5 requires a minimum of 3 disks. RAID 5 can sustain one
failed disk.
Two independent parity computations must be used in order to
provide protection against double disk failure. Two different
algorithms are employed to achieve this purpose. RAID 6 requires
a minimum of 4 disks. RAID 6 can sustain two failed disks.
RAID 10 has high reliability and high performance. RAID 10 is
implemented as a striped array whose segments are RAID 1
arrays. It has the fault tolerance of RAID 1 and the performance of
RAID 0. RAID 10 requires 4 disks. RAID 10 can sustain two failed
disks.
RAID 50 combines the straight block-level striping of RAID 0 with
the distributed parity of RAID 5. This is a RAID 0 array striped
across RAID 5 elements. It requires at least 6 drives.
RAID 60 combines the straight block-level striping of RAID 0 with
the distributed double parity of RAID 6. That is, a RAID 0 array
striped across RAID 6 elements. It requires at least 8 disks.
If the administrator improperly removes a hard disk that should not be
removed when RAID status is degraded, all data will be lost.
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RAID 6 RAID 10
  
  
  
  
RAID 50 RAID 60
 
 
 