Characteristics Of Raid Levels - NEC Express5800 User Manual
N8100-1665f/1666f/1667f
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- User manual (494 pages) ,
- Maintenance manual (238 pages) ,
- Installation manual (75 pages)
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4-40 Configuring Your Server
RAID Levels
Characteristics of RAID Levels
The table below lists the characteristics of the RAID levels.
Level
Function
RAID0
Striping
RAID1
Mirroring
Striping of both data
RAID5
and redundant data
Striping of both data
RAID6
and redundant data
RAID10
Striping of RAID1
RAID50
Striping of RAID5
Redundancy
Characteristics
No
Data read/write at the highest rate
•
Largest capacity
•
Capacity: (capacity of single hard disk
•
drive) × (number of hard disk drives)
Yes
Two hard disk drives required
•
Capacity: capacity of single hard disk
•
drive
Yes
Three or more hard disk drives required
•
Capacity: (capacity of single hard disk
•
drive) × ((number of hard disk drives) -
1)
Yes
Three or more hard disk drives required
•
Capacity: (capacity of single hard disk
•
drive) × ((number of hard disk drives) -
2)
Yes
Four or more hard disk drives required
•
Capacity: (capacity of single hard disk
•
drive) × ((number of hard disk drives) -
2)
Yes
Six or more hard disk drives required
•
Capacity: (capacity of single hard disk
•
drive) × ((number of hard disk drives) -
2)
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