
10
!
Note
1.
RAID and Hot spare can’t be selected in the same channel (HDD).
2.
Only one hot spare HDD can be selected.
3.
It’s meaningless to select Hot spare in RAID Level 0
.
(6) Step 6: Select RAID Level
New M-series support RAID 0~5 levels. Below please see the comparison between RAID
0, 0+1, 3 and 5. With properly configured, the RAID can provide non-stop service with
high degree of fault tolerance. The RAID function allows two HDD failures without
impact on the existing data stored in the HDD and failed drive data can be reconstructed
from the remaining data and parity drives. Please have the proper configuration according
to your requirement.
RAID
Level
Description Min
Drives
Max.
Drives
Data Reliability
0
z
Also known as stripping.
z
Data distributed across multiple drives in
the array.
z
There is no data protection
1 5
No data protection
1
z
Also known as mirroring
z
All data replicated on N separated disk. N
is always 2.
z
There is a high availability solution but
due to the 100% duplication, it is also a
costly solution.
2 2
High than RAID 3, 5.
3
z
Also known Bit-Interleaved parity.
z
Data and parity information is subdivided
and distributed across all disk.
3 5
*Lower than RAID 1.
*High than a single
drive
Содержание M1600
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