Areca ARC-1200 - Stagger Power on; Spin down Idle HDD; HDD SMART Status Polling; Disk Write Cache Mode

81
WEB BROWSER-BASED CONFIGURATION
•
Stagger Power on
The SATA RAID controller has included the option for customer
to select the disk drives sequentially stagger power up value.
The values can be selected from 0.4s to 6s per step which
powers up one drive.
• Spin Down Idle HDD
This function can automatically spin down the drive if it hasn't
been accessed for a certain amount of time. This value is used
by the drive to determine how long to wait (with no disk activity,
before turning off the spindle motor to save power.)
•
HDD SMART Status Polling
An external RAID enclosure has the hardware monitor in the
dedicated backplane that can report HDD temperature status
to the controller. However, PCI type controllers do not use
backplanes if the drives are internal to the main server chassis.
The type of enclosure cannot report the HDD temperature to
the controller. For this reason, "HDD SMART Status Polling" was
added to enable scanning of the HDD temperature function. It is
necessary to enable “HDD SMART Status Polling” function before
SMART information is accessible. This function is disabled by
default.
•
Disk Write Cache Mode
A user can set the “Disk Write Cache Mode” to: Auto, Enabled,
or Disabled.
•
Disk Capacity Truncation Mode
SATA RAID controllers use drive truncation from differing ven-
dors that are more likely to be used as spares for each other.
Drive truncation slightly decreases the usable capacity of a drive
that is used in redundant units.The controller provides three
truncation modes in the system conguration: Multiples Of
10G, Multiples Of 1G, and Disabled.
Multiples Of 10G: If you have 120 GB drives from different
vendors; chances are that the capacity varies slightly. For ex-
ample, one drive might be 123.5 GB, and the other 120 GB. The
“Multiples Of 10G” truncates the number under tens. This makes