Dell PowerEdge 1400SC - Manual (Page 42)

3-8 User’s Guide


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The basic host adapter settings are the SCSISelect settings most likely to require
modification:


Host Adapter SCSI ID — Sets the host adapter's SCSI ID. The default setting is
SCSI ID 7, which allows the host adapter to support narrow SCSI devices in addi-
tion to wide SCSI devices. Dell recommends that you leave the host adapter set
to SCSI ID 7.


SCSI Parity Checking — Determines whether the host adapter verifies the accu-
racy of data transfer on the SCSI bus. The default setting is Enabled. You should
disable SCSI Parity Checking if any SCSI device connected to the host adapter
does not support SCSI parity; other wise, leave it enabled. Most SCSI devices
support SCSI parity. If you are unsure if a device supports SCSI parity, consult the
documentation for the device.


Host Adapter SCSI Termination — Sets termination on the host adapter. The
default setting for the AIC-7899 host adapter is Automatic. Dell recommends
that you leave this option set to the default.
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The boot device options allow you to specify the device from which to boot your
computer:


Boot SCSI ID — Specifies the boot channel (A or B) for the dual channel Adaptec
7899 host adapter. The default is A First.


Boot SCSI ID — Specifies the SCSI ID of the device from which you want to boot
your system.


Boot LUN Number — Allows you to specify a particular logical unit number
(LUN) from which to boot your boot device if your boot device has multiple LUNs
and Multiple LUN Support is enabled (see the section “Advanced Configuration
Settings” found later in this chapter). The default setting is LUN 0.


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The SCSI device/configuration settings allow you to configure certain parameters for
each device on the SCSI bus. To configure a specific device, you must know the SCSI
ID assigned to that device. If you are not sure of the SCSI ID, see the section “Using
the SCSI Disk Utilities” found later in this chapter.


Sync Transfer Rate — Sets the maximum synchronous data transfer rate that
the host adapter supports.
The AIC-7899 host adapter supports rates up to 160 megabytes per second
(MB/sec). The default for the AIC-7899 host adapter is 160 MB/sec.
If the host adapter is set to not negotiate for synchronous data transfer, the
maximum synchronous transfer rate is the maximum rate that the host adapter
accepts from the device during negotiation. (This is standard SCSI protocol.)