BIOS CONFIGURATION
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sary tracking mechanisms for outstanding and completed por-
tions of the workload. The SATA RAID controller allows the user
to choose the SATA mode: SATA150, SATA150+NCQ, SATA300,
SATA300+NCQ.
3.6.5.7 HDD Read Ahead Cache
Allow Read Ahead (Default: Enabled)—When Enabled, the drive’s
read ahead cache algorithm is used, providing maximum perfor-
mance under most circumstances.
3.6.5.8 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 0.4 sec(s) to 6 sec(s) per step
which powers up one drive.
3.6.5.9 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.)
3.6.5.10 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 cards 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 en-
able 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.
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