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Top Products
RAID level
Data redun-
dancy
Physical
drive
capacity
utili- zation
Read perfor-
mance
Write perfor-
mance
Built-in
spare drive
Min.
number of
drives
Max.
number of
drives
RAID level-1 Yes 50% Very high Very high No 2 2
RAID
level-1E
Yes 50% Very high Very high No 3 16
RAID level-5 Yes 67% to 94% Superior High No 3 16
RAID
level-5E
Yes 50% to 88% Superior High Yes 4 16
RAID
level-5EE
Yes 50% to 88% Superior High Yes 4 16
RAID level-6 Yes 50% to 88% Very High High No 4 16
RAID
level-00
No 100% Superior Superior No 2 60
RAID
level-10
Yes 50% Very high Very high No 4 16
RAID
level-1E0
Yes 50% Very high Very high No 6 60
RAID
level-50
Yes 67% to 94% Superior High No 6 60 (SCSI) 128
(SAS, SATA)
RAID
level-60
Yes 50% to 88% Very High High No 8 128
Spanned
Volume
No 100% Superior Superior No 2 48
RAID
Volume
No 50% to 100% Superior Superior No 4 48
Physical drive utilization, read performance, and write performance depend on the
number of drives in the array. Generally, the more drives in the array, the better
the performance.
More information
v Understanding RAID technology
v Selecting the logical drive size
v Selecting the RAID level by array capacity
v Creating logical drives (action)
v Configuring RAID and creating arrays (action)
v Creating logical drives in the wizard
v Things to consider when changing the RAID level
Chapter 3. Using ServeRAID Manager 49