4. RAID System Configuration
Express5800/R120g-1M, R120g-2M Maintenance Guide
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Chapter 2 Useful Features
(3) Priority settings
For setting and displaying the priority of the background tasks (Rebuild, Patrol Read, and Consistency Check)
for the RAID Controller, Off-line Utility uses numerical values while Universal RAID Utility uses three levels of
High, Middle, and Low. The table below shows the correspondence between the numerical value ranges and
levels for each item. In this case, the priority is the percentage of the background task processing to all
processes being processed by the RAID Controller.
[Setting values (Off-line Utility) and display levels (Universal RAID Utility)]
Item
Setting values of
Off-line Utility
Display levels of
Universal RAID Utility
Rebuild priority
80 to 100
High
31 to 79
Middle
0 to 30
Low
Patrol Read priority
80 to 100
High
31 to 79
Middle
0 to 30
Low
Consistency Check priority
80 to 100
High
31 to 79
Middle
0 to 30
Low
[Values to be set when changing the level with Universal RAID Utility]
Item
Selection levels of
Universal RAID Utility
Setting values
Rebuild priority
High 90
Middle 50
Low 10
Patrol Read priority
High 90
Middle 50
Low 10
Consistency Check priority
High 90
Middle 50
Low 10
Tips
•
Off-line Utility can specify the background initialization priority, but Universal
RAID Utility cannot.
•
Although Universal RAID Utility can specify the priority of initialization (Slow
Initialize), this server does not support this function.
