Raid Levels - NEC Express5800/140Rf-4 User Manual

RAID Levels

Characteristics of RAID Levels
The table below lists the characteristics of the RAID levels.
Level Function
RAID0 Striping
RAID1 Mirroring
RAID5 Striping of both data
and redundant data
RAID6 Striping of both data
and redundant data
RAID10 Spanning of RAID1
RAID50 Spanning of RAID5
Redundancy Characteristics
•
No Data read/write at the highest rate
•
Largest capacity
•
Capacity: (capacity of single HDD) ×
(number of HDDs)
•
Yes Two HDDs required
•
Capacity: capacity of single HDD
•
Yes Three or more HDDs required
•
Capacity: (capacity of single HDD) ×
((number of HDDs) - 1)
•
Yes Three or more HDDs required
•
Capacity: (capacity of single HDD) ×
((number of HDDs) - 2)
•
Yes Four or more HDDs required
•
Capacity: (capacity of single HDD) ×
((number of HDDs) - 2)
•
Yes Six or more HDDs required
•
Capacity: (capacity of single HDD) ×
((number of HDDs) - 2)
Configuring Your Server 4-39