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RAID
Description
Level
RAID 3
Striping with
Parity on
dedicated
disk
RAID 5
Striping with
interspersed
parity
NRAID Disk Spanning
NRAID
Minimum
1
Disks required
Capacity
N
Redundancy
N
o
NRAID stands for Non-RAID.
combined to become one logical drive (no block striping). In other
words, the capacity of the logical drive is the total capacity of the
physical drives. NRAID does not provide data redundancy.
8
Minimum
Data
Performance
Drives
Availability
Sequential
N+1
>>NRAID
R: High
==RAID 5
W: Medium
N+1
>>NRAID
R: High
==RAID 5
W: Medium
2 GB Hard Drive
+
+
1 GB Hard Drive
+
2 GB Hard Drive
Logical
2 + 3 + 1 + 2 = 8 GB Logical Drive
Drive
The capacity of all the drives are
Performance
Random
R: Medium
W: Low
R: High
W: Low
3 GB Hard Drive
User's Guide
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