Asus DS300 G2 Series, User Manual

Page: 160 / 262

DS300f G2 Series User Manual
154
M
anaGInG
b
aCkGround
a
CtIvIty
(Clu)
Background activity refers to any of several functions that take place in the background while normal operation
of the ASUS DS300f G2 continues.
Background activities work in conjunction with disk arrays and logical drives. See Managing Disk Arrays (CLU)
and Managing Logical Drives (CLU) for more information about how and when to use background activities.
Background Activity Management includes the following functions:
• "Viewing Current Background Activities (CLU)" on page 154
• "Making Background Activity Settings (CLU)" on page 154
v
IewInG
c
urrent
b
ackGrounD
a
ctIvItIeS
(clu)
From the Main Menu, highlight
Background Activities
and press
Enter
. A count of current background activities
appears, including:
•
Rebuild
•
PDM (Predictive Data Migration)
•
Synchronization
•
Redundancy Check
•
Migration
•
Transition
•
Initialization
•
Media Patrol
m
akInG
b
ackGrounD
a
ctIvIty
S
ettInGS
(clu)
1. From the Main Menu, highlight
Background Activities
and press
Enter
.
2. Highlight
Background Activity Settings
and press
Enter
.
3. Highlight following and press the spacebar to toggle between
Enabled
and
Disabled
.
• Media Patrol – Checks the magnetic media on physical drives
• Auto Rebuild
– When enabled and no spare drive is available, the disk array begins to rebuild as soon
as you replace the failed physical drive with an unconfigured physical drive of equal or greater size
4. Highlight following and press the spacebar to toggle through
Low
,
Medium
, and
High
rates:
• Rebuild – Rebuilds data to a replacement physical drive in a disk array
• Migration
– Change RAID level or add physical drives to disk arrays
• PDM
– Migrates data from a suspect physical drive to a replacement drive in a disk array
• Transition – Returns a revertible spare drive to spare status
• Synchronization – Checks the data integrity on disk arrays
• Initialization – Full initialization sets all data bits in the logical
drive to a specified pattern, such as all zeros
• Redundancy Check
– Checks, reports and can correct data inconsistencies in logical drives
The rates are defined as follows:
• Low – Fewer resources to activity, more to data read/write.
• Medium – Balance of resources to activity and data read/write.
• High – More resources to activity, fewer to data read/write.
5. Highlight the following PDM trigger settings and press the backspace key to erase the current value:
• BBM Threshold – 1 to 2048 reassigned blocks
• Media Patrol Threshold
– 1 to 2048 error blocks
6. Press
Control-A
to save your settings.