Managing The Raid Controllers (Clu) - Asus DS300j G2 Series User Manual

M raId C
anaGInG the
RAID controller management includes the following functions:
• "Viewing Controller Information (CLU)" on page 124
• "Making Controller Settings (CLU)" on page 124
• "Locating the Controller (CLU)" on page 125
v c I (clu)
IewInG ontroller nformatIon
Controller Management includes information, settings and statistics.
To access Controller Management:
1. From the Main Menu, highlight Subsystem Management and press Enter .
2. Highlight Controller Management and press Enter .
The Controller summary information includes:
• Controller ID – 1 or 2
• Alias – if assigned
• Operational Status – OK means normal. Might show BGA running. Not
present indicates a malfunction or no controller is installed
• Readiness Status – Active or Standby is normal. N/A means not accessible
3. Highlight the controller you want and press Enter .
To access additional controller information, highlight Advanced Information and press Enter .
To access controller statistics, highlight Controller Statistics and press Enter .
c s
leAring tAtistics
To clear controller statistics, see "Clearing Statistics (CLU)" on page 167.
124
(Clu)
ontrollers
c o w (clu)
learInG an rPhan atermark
This condition is the result of a disk drive failure during an NVRAM RAID level migration on a disk array.
To clear an orphan watermark:
1. From the Main Menu, highlight Subsystem Management and press Enter .
2. Highlight Controller Management and press Enter .
3. Highlight one of the controllers and press Enter .
4. Highlight Clear Orphan Watermark and press Enter .
The condition is cleared. See "Physical Drive Problems" on page <?> for more information.
m c S (clu)
akInG ontroller ettInGS
If your subsystem has two controllers, any settings you make to one controller automatically apply to the other
controller.
To make Controller settings:
1. From the Main Menu, highlight Subsystem Management and press Enter .
2. Highlight Controller Management and press Enter .
3. Highlight the controller you want and press Enter .
4. Highlight Controller Settings and press Enter .
5. Make the following settings as required:
• Type an alias into the Alias field.
Maximum of 48 characters. Use letters, numbers, space between words and underscore. An alias is
optional.
• Highlight LUN Affinity and press the spacebar to toggle between Enabled and Disabled .
RAID controllers must be set to Active-Active. See "Making Subsystem Settings (CLU)" on page 122
and "LUN Affinity" on page <?>.
• Highlight Coe rcion and press the spacebar to toggle between Enabled and Disabled .
For more information, see "Capacity Coercion" on page 196.
• Highlight Coercion Method and press the spacebar to toggle through:
– Reduces the capacity to the nearest 1 GB boundary.
GB Truncate
– Reduces the capacity to the nearest 10 GB boundary.
10 GB Truncate
– Uses an algorithm to determine truncation. Results in the maximum amount
Grp (group) Rounding
of usable drive capacity.
Table Rounding – Applies a predefined table to determine truncation.
DS300f G2 Series User Manual