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Hardware
336
RAID Level
This section describes particulery the characteristics of the RAID levels suppurted by the RAID
controller (MegaRAUD).
Characteristics of RAID Levels
The table below lists the characteristics of the RAID levels.
Level
Function
Redundancy
Characteristics
RAID0
Striping
No
· Data read/write at the highest rate
· Largest capacity
· Capacity: (capacity of single HDD) ×
(number of HDDs)
RAID1
Mirroring
Yes
· Two HDDs required
· Capacity: capacity of single HDD
RAID5
Striping of both data
and redundsant data
Yes
· Three HDDs required
· Capacity: (capacity of single HDD) ×
((number of HDDs)-1)
RAID6
Striping of both data
and redundsant data
Yes
· Three or more HDDs required
· Capacity: (capacity of single HDD) ×
((number of HDDs) / 2)
RAID10
Spanning of RAID1
Yes
· Four or more HDDs required
· Capacity: (capacity of single HDD) ×
((number of HDDs) / 2)
RAID50
Spanning of RAID5
Yes
· Six HDDs required
· Capacity: (capacity of single HDD) ×
((number of HDDs) - 2)
Summary of Contents for Express5800/A1080a
Page 87: ...87 Memo ...
Page 292: ...Hardware 292 3 BIOS Menu screen is displayed ...
Page 302: ...Hardware 302 Note 1 Enable is set only for slot 1 and slot 14 at factory shipment ...
Page 351: ...Hardware 351 3 BIOS will start Select Save Exit then press Enter ...
Page 442: ...Hardware 442 5 6 ...
Page 473: ...Hardware 473 Screen for changing keyboard layout in Java Console ...
Page 554: ...Hardware 554 Memo ...
Page 565: ...Software 565 Memo ...
Page 668: ...Operation and Maintenance 668 Memo ...
Page 696: ...XXVIII Memo ...