XEVO
Software Manual
Storage Tab
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www.qsan.com
Official
Document
23
Typical
Applications
High end
workstation,
Data logging,
Real-time
rendering,
Very
transitory
data
Operating
system,
Transaction
database
Data
warehouse,
Web service,
Archive
Data archive,
High
Availability
solution,
Server with
large capacity
requirement
Operating
system,
Transaction
database
Table 5-2 RAID Level Summary - 2
RAID 0+1
RAID 10
RAID 30
RAID 50
RAID 60
Min. # Drives
4
4
6
6
8
Fault
Tolerance
One drive
failure in each
sub-group
One drive
failure in each
sub-group
One drive
failure in each
sub-group
One drive
failure in each
sub-group
Two drive
failures in
each sub-
group
Read
Performance
Excellent
Excellent
Very Good
Very Good
Very Good
Write
Performance
Very Good
Very Good
Good
Good
Fair to Good
Capacity
(N = drive
quantity, M =
drive capacity, G =
subgroups)
N/2 x M
(e.g., 8 drives / 2 x
1TB = 4TB)
G x M
(e.g., (2
subgroups) x 1TB
= 2TB)
(N-G) x M
(e.g., (8 drives - 2
subgroups) x 1TB
= 6TB)
(N-G) x M
(e.g., (8 drives - 2
subgroups) x 1TB
= 6TB)
(N-2xG) x M
(e.g., (8 drives – 2
x 2 subgroups) x
1TB = 4TB)
Capacity
Utilization
(Min.~26 drives)
50%
(e.g., 4/8 = 50%)
8% ~ 50%
(e.g., 2/8 = 25%)
67% ~ 92%
(e.g., 6/8 = 75%)
67% ~ 92%
(e.g., 6/8 = 75%)
50% ~ 85%
(e.g., 4/8 = 50%)
Typical
Fast
Fast
Large
Large
Data archive,
