DATOptic ARC-1680 Series - Manual (Page 81)

BIOS CONFIGURATION
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3.7.5.9 Hdd Queue Depth Setting
This parameter is adjusted the queue depth capacity of NCQ
(SATA HDD) or Tagged Command Queuing (SAS) which trans-
mits multiple commands to a single target without waiting for
the initial command to complete.
3.7.5.8 Volume Data Read Ahead
The volume ,read data ahead parameter specifies the controller
firmware algorithms which process the Read Ahead data blocks
from the disk. The Read Ahead parameter is normal by default.
To modify the value, you must set it from the command line
using the Read Ahead option. The default normal option satisfies
the performance requirements for a typical volume. The disabled
value implies no read ahead. The most efficient value for the
controllers depends on your application. Aggressive read ahead
is optimal for sequential access but it degrades random access.
I/O Port Addr : 28000000h, F2(Tab): Select Controller, F10: Reboot System
ArrowKey Or AZ:Move Cursor, Enter: Select, ESC: Escape, L:Line Draw, X: Redraw
Areca Technology Corporation RAID Controller
Main Menu
Quick Volume/Raid Setup
Raid Set Function
Volume Set Function
Physical Drives
Raid System Function
Hdd Power Management
Ethernet Configuration
View System Events
Clear Event Buffer
Hardware Monitor
System information
Raid System Function
Raid System Function
Mute The Alert Beeper
Alert Beeper Setting
Change Password
JBOD/RAID Function
Background Task Priority
SATA NCQ Support
HDD Read Ahead Cache
Volume Data Read Ahead
Hdd Queue Depth Setting
Empty HDD Slot LED
Controller Fan Detection
SAS Mux Setting
Auto Activate Raid Set
Disk Write Cache Mode
Capacity Truncation
Volume Data Read Ahead
Volume Data Read Ahead
Enabled
Aggressive
Conservative
Disabled
Normal