Asus DS300 G2 Series, Руководство пользователя

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DS300f G2 Series User Manual
130
• Highlight
DMA Mode
and press the spacebar to toggle through UDMA 0 to 6 and MDMA 0 to 2.
For SAS drives:
• Highlight
Write Cache
and press the spacebar to toggle between
Enabled
and
Disabled
.
• Highlight
Read Look Ahead Cache
and press the spacebar to toggle between
Enabled
and
Disabled
.
• Highlight
CmdQueuing
and press the spacebar to toggle between
Enabled
and
Disabled
.
• Highlight
MediumErrorThreshold
and press the backspace key to
remove the current value, then type a new smaller value.
See the comments below.
• Highlight Read Cache and press the spacebar to toggle between Enabled and Disabled .
4. Press
Control-A
to save your settings.
See “Viewing Physical Drive Information” below to determine which functions your physical drives
support.
Medium Error Threshold is the number of bad blocks tolerated before the controller marks the drive as
Dead. The default setting is 64 blocks. A setting of zero disables the function. When disabled, no drives are
marked offline even when errors are detected.
v
IewInG
P
hySIcal
D
rIve
I
nformatIon
(clu)
To view information about a physical drive:
1. From the Main Menu, highlight
Physical Drive Management
and press
Enter
.
2. Highlight the physical drive you want and press
Enter
.
Basic information displays.
3. Highlight
Advanced Information
and press
Enter
.
Advanced information displays.
v
IewInG
P
hySIcal
D
rIve
S
tatIStIcS
(clu)
To view the statistics for the selected physical drive:
1. From the Main Menu, highlight
Physical Drive Management
and press
Enter
.
2. Highlight the physical drive you want and press
Enter
.
3. Highlight
Physical Drive Statistics
and press
Enter
.
c
leAring
s
tAtistics
To clear physical drive statistics, see "Clearing Statistics (CLU)" on page 167.
S
ettInG an
a
lIaS
(clu)
An alias is optional. To set an Alias for a physical drive:
1. From the Main Menu, highlight
Physical Drive Management
and press
Enter
.
2. Highlight the physical drive you want and press
Enter
.
3. Type an alias into the field provided.
Maximum of 32 characters. Use letters, numbers, space between words and underscore.
4. Press
Control-A
to save your settings.
c
learInG
S
tale anD
Pfa c
onDItIonS
(clu)
The Clear Stale and Clear PFA functions only appear when those conditions exist on the physical drive. To clear
a Stale or PFA condition on a physical drive:
1. From the Main Menu, highlight
Physical Drive Management
and press
Enter
.
2. Highlight the physical drive you want and press
Enter
.
3. Highlight
Clear Stale
or
Clear PFA
and press
Enter
.
If a physical drive is still online and shows a PFA error but “Clear PFA” does not appear, use PDM to copy
the data to a new physical drive. See “Running PDM on a Disk Array” on page 136.
If a physical drive is offline and shows a PFA error, rebuild the disk array. See “Rebuilding a Disk Array”