DATOptic ARC-1680 Series - Manual (Page 85)

BIOS CONFIGURATION
85
3.7.5.14 Disk Write Cache Mode
User can set the “Disk Write Cache Mode” to Auto, Enabled, or
Disabled. “Enabled” increases speed, “Disabled” increases reli-
ability.
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
Disk Write Cache Mode
Disk Write Cache Mode
Auto
Disabled
Enabled
Auto
3.7.5.15 Capacity Truncation
Areca RAID controllers use drive truncation so that drives from
different vendors are more likely to be usable as spares for one
another. Drive truncation slightly decreases the usable capac-
ity of a drive that is used in redundant units. The controller
provides three truncation modes in the system configuration:
Multiples Of 10G, Multiples Of 1G and Disabled.
Multiples Of 10G: If you have 120 GB drives from differ-
ent vendors; chances are that the capacity varies slightly. For
example, one drive might be 123.5 GB, and the other 120 GB.
“Multiples Of 10G” truncates the number under tens. This makes
the same capacity for both of these drives so that one could
replace the other.
Multiples Of 1G: If you have 123 GB drives from different ven-
dors; chances are that the capacity varies slightly. For example,
one drive might be 123.5 GB, and the other 123.4 GB. “Mul-
tiples Of 1G” truncates the fractional part. This makes the same
capacity for both of these drives so that one could replace the
other.