Product specifications

Host-Side and Drive-Side Parameters
8-11
5.2.1 Disk Access Delay Time
This feature sets the delay time before the subsystem tries to access
the hard drives after power-on. Default may vary 15 seconds to 30
seconds, and from one model to another. This parameter can be
adjusted to fit the spin-up speed of different models of disk drives
installed in your subsystem.
Figure 5 - 12: Selecting Disk Access Delay Time
Choose “Disk Access Delay Time,” then press [ENTER]. A list of
selections displays. Move the cursor bar to a selection, then press
[ENTER]. Choose Yes in the dialog box that follows to confirm the
setting.
5.2.2 Drive I/O Timeout
The “Drive I/O Timeout” is the time interval for the controller to
wait for a drive to respond. If the controller attempts to read data
from or write data to a drive but the drive does not respond within
the Drive I/O Timeout value, the drive will be considered as a
failed drive.
When the drive itself detects a media error while reading from the
drive platter, it usually retries the previous reading or re-calibrates
the head. When the drive encounters a bad block on the media, it
reassigns the bad block onto a spare block. However, it takes time to
perform the above actions. The time to perform these operations can
vary between different brands and different models.
During channel bus arbitration, a device with higher priority can
utilize the bus first. A device with lower priority will sometimes