Areca ARC-1213-4I Bedienungsanleitung PDF herunterladen (Seite 141)

141

WEB BROWSER-BASED CONFIGURATION

the performance requirements for a typical volume. The disabled

value implies no read ahead. The most efcient value for the

controllers depends on your application. Aggressive read ahead

is optimal for sequential access but it degrades random access.

• HDD Queue Depth

This parameter is adjusted the queue depth capacity of NCQ

(SATA HDD) or Tagged Command Queuing (SAS HDD) which

transmits multiple commands to a single target without waiting

for the initial command to complete.

• Empty HDD Slot LED

The rmware has added the "Empty HDD Slot LED" option to

setup the fault LED light "ON "or "OFF" when there is no HDD

installed. When each slot has a power LED for the HDD installed

identify, user can set this option to "OFF". Choose option "ON",

the 6Gb/s SAS RAID controller will light the fault LED; if no HDD

installed.

• CPU Fan Detection

The ARC-1882 series incorporate two passive heatsinks that al-

low the hot devices such as a ROC and expander chip to keep

cool. In addition, newer systems already have enough air ow

blowing over the controller. The passive heat sink has provided

enough adequate cooling for ROC and expander chip.

The “CPU Fan Detection” function is available in the rmware for

detecting the cooling fan function on the ROC if you want to use

the active cooling fan. When using the replaceable cooling fan,

enable the “CPU Fan Detection” function through this McBIOS

RAID manager setting or Web Browser.

• SES2 Support

If your SAS backplane does not implement the correct SES2

function, you can disable the SES2 support on controller. Con-

troller will use SMP (only monitor PHY not environment) to com-

municate with SAS backplane, but you will be not able to moni-

tor the backplane information.

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Areca ARC-1213-4I Bedienungsanleitung Seite 141