B-9
Choosing Your Array Type
Comparing the Selection Criteria
The table below rates how well each array type achieves each of the
selection criteria. The table uses a scale of 1 to 5: 1 = least effective;
5 = most effective.
Use the table below to compare the array types according to the
criteria you rated in the previous section. For example, if random-
write performance and load balancing are your most important
criteria, then choose a stripe set array type.
❒
Array Type
Criteria
V
o
lu
m
e Set
St
rip
e Set
(R
AID 0)
Mirr
or Set
(R
AID 1)
RA
ID 5 Set
St
rip
e Set
o
f
Mirr
or Set
s
(R
AID 0/1)
St
rip
e Set
o
f
RA
ID 5 Set
s
(R
AID 0/5)
Random-read
performance
1
4
2
4
5
5
Random-write
performance
3
5
2
1
3
2
Sequential-read
performance
1
5
2
3
5
4
Sequential-write
performance
3
4
5
1
5
2
Load balancing
1
4
1
3
3
5
Cost per usable
array space
5
5
1
4
1
3
Fault tolerance
No
No
Yes
Yes
Yes
Yes
Expansion
Yes
Yes
Yes
Yes
No
No
Summary of Contents for 2110S - SCSI RAID Controller
Page 1: ...R Adaptec Storage Manager Pro v1 11 User s Guide...
Page 6: ......
Page 137: ...B 7 Choosing Your Array Type...