Product specifications

Infortrend
2-24
2.12.4 Data Rate
This option is available in the configuration menu of SCSI host
channel and the drive channel configuration menus of SATA-based
subsystems. Default is “AUTO” and should work fine with most
drives. Changing this setting is not recommended unless some
particular bus signal issues occur.
Most SATA/ATA-based systems connect only one drive per
SATA/ATA channel (4 for multi-lane with SATA-II). This helps to
avoid a single drive failure from affecting other drives. The
maximum mechanical performance of today’s drives can reach
around 30MB/second (sustained read). This is still far below the
bandwidth of a drive channel bus. Setting the SATA/ATA bus
speed to a lower value can get around some problems, but will not
become a bottleneck to system performance.
Note that the SATA/ATA speed is the maximum transfer rate of the
SATA/ATA bus in that mode. It does not mean the drive can
actually carry out that amount of sustained read/write performance.
For the performance of each drive model, please refer to the
documentation provided by drive manufacturer.
Host Channel:
Select from Main Menu, “View and
Edit Channels,” and then a host
channel you wish to change its data
rate. Press ENT on the channel and
use the arrow keys to find the “Set
Transfer Speed” option. Press ENT on
the Transfer Speed option to display
“Chl=X Clk=160 Change to=160?”,
where “X” stands for the channel
number.
Use your arrow keys to display a
different data rate (160MHz to Async).
Press ENT to confirm a selection.
Drive Channel:
Select from Main Menu, “View and
Edit Channels,” and then a drive
channel you wish to change its data
rate. Press ENT on the channel and use
the arrow keys to find the “Data Rate”
option. Press ENT on the Data Rate
option to display “Set Chl=X Data Rate
C0=Host PID=0
SID=NA SXF=160M
Set Transfer
Speed
..
Chl=x Clk=160
Change to
=
160
?
CHX=Drive SATA
SXF=AUTO
View Chip
Information ..