Chapter 3 Functional Descriptions
7
Chapter 3 Functional Description
The advantages of RAID are: Availability, Capacity and Performance.
Choosing the right RAID level and drive failure management can
increase Availability, subsequently increasing Performance and
Capacity. The AA-3102RS RAID controller provides complete RAID
functionality and enhanced drive failure management.
RAID Management
RAID stands for Redundant Array of Inexpensive Drive. The
advantages of using a RAID storage subsystem are:
•
Provides disk spanning by weaving all connected drives into one
single volume.
•
Increases disk access speed by breaking data into several blocks
when reading/writing to several drives in parallel. With RAID,
storage speed increases as more drives are added.
•
Provides fault-tolerance by mirroring or parity operation.
What are the RAID levels?
RAID
Level
Description
Minimum
Drives
Data
Availability
Performance
Sequential
Performance
Random
NRAID
Non-RAID
1
Drive
Drive
RAID 0
Disk Striping
N
==RAID
R: Highest
W: Highest
R: High
W: Highest
RAID 1
(0+1)
Mirroring Plus
Striping
(if N>1)
N+1
>>NRAID
==RAID 5
R: High
W: Medium
R: Medium
W: Low
Summary of Contents for AcerAltos 3102RS
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Page 64: ...User s Guide 46 Insert RAID Controller Main Board Daughter Board Insert ...
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