Dell PowerEdge 2300 User's Guide - Page 41

LUNs and Multiple LUN Support is enabled see Advanced Host Adapter Set

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The boot device settings allow you to specify the device from which to boot your computer: Boot Target ID - This option specifies the SCSI ID of the device from which you wish to boot your system. SCSI IDs are set for the hard-disk drive according to the drive's location on the backplane board (see Figure 7-2 for the SCSI ID of each drive location). The default setting for Boot Target ID is SCSI ID 0. Boot LUN Number - If your boot device has multiple logical unit numbers (LUNs) and Multiple LUN Support is enabled (see "Advanced Host Adapter Settings" found later in this section), this option allows you to specify a particular LUN from which to boot on your boot device. The default setting is LUN 0. 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 "Using the SCSI Disk Utilities" found later in this section. Initiate Sync Negotiation - This option determines whether the host adapter initiates synchronous data transfer negotiation (sync negotiation) between itself and the device. The default setting is Yes. Synchronous data transfer negotiation is a SCSI feature that allows the host adapter and its attached SCSI devices to transfer data in synchronous mode. Synchronous data transfer is faster than asynchronous data transfer. The host adapter always responds to sync negotiation if the SCSI device initiates it. If neither the host adapter nor the SCSI device initiates sync negotiation, data is transferred asynchronously. Normally, you should leave the Initiate Sync Negotiation setting enabled, because most SCSI devices support synchronous negotiation and because it allows for faster data transfer. NOTE: Some older SCSI-1 devices do not support sync negotiation. This may cause your computer to operate erratically or hang if Initiate Sync Negotiation is set to Yes. Set Initiate Sync Negotiation to No for these devices. Maximum Sync Transfer Rate - This option sets the maximum synchronous data transfer rate that the host adapter supports. The host adapter supports rates up to 80 megabytes per second (MB/sec). The default setting is 80 MB/sec (the maximum). 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.) Enable Disconnection - This option (sometimes called disconnect/reconnect) determines whether the host adapter allows the SCSI device to disconnect from the SCSI bus. Enabling disconnection allows the host adapter to perform other Installing and Configuring SCSI Drivers 3-5

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Installing and Configuring SCSI Drivers
3-5
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The boot device settings allow you to specify the device from which to boot your
computer:
²
Boot Target ID — This option specifies the SCSI ID of the device from which you
wish to boot your system. SCSI IDs are set for the hard-disk drive according to
the drive’s location on the backplane board (see Figure 7-2 for the SCSI ID of each
drive location). The default setting for Boot Target ID is SCSI ID 0.
²
Boot LUN Number — If your boot device has multiple logical unit numbers
(LUNs) and Multiple LUN Support is enabled (see “Advanced Host Adapter Set-
tings” found later in this section), this option allows you to specify a particular
LUN from which to boot on your boot device. The default setting is LUN 0.
6&6,±’HYLFH¶&RQILJXUDWLRQ±6HWWLQJV
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 “Using the SCSI
Disk Utilities” found later in this section.
²
Initiate Sync Negotiation — This option determines whether the host adapter ini-
tiates synchronous data transfer negotiation (sync negotiation) between itself
and the device. The default setting is Yes.
Synchronous data transfer negotiation is a SCSI feature that allows the host
adapter and its attached SCSI devices to transfer data in synchronous mode. Syn-
chronous data transfer is faster than asynchronous data transfer.
The host adapter always responds to sync negotiation if the SCSI device initiates
it. If neither the host adapter nor the SCSI device initiates sync negotiation, data
is transferred asynchronously.
Normally, you should leave the Initiate Sync Negotiation setting enabled, because
most SCSI devices support synchronous negotiation and because it allows for
faster data transfer.
NOTE: Some older SCSI-1 devices do not support sync negotiation. This may
cause your computer to operate erratically or hang if Initiate Sync Negotiation is
set to Yes. Set Initiate Sync Negotiation to No for these devices.
²
Maximum Sync Transfer Rate — This option sets the maximum synchronous
data transfer rate that the host adapter supports. The host adapter supports rates
up to 80 megabytes per second (MB/sec). The default setting is 80 MB/sec (the
maximum).
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.)
²
Enable Disconnection — This option (sometimes called
disconnect/reconnect
)
determines whether the host adapter allows the SCSI device to disconnect from
the SCSI bus. Enabling disconnection allows the host adapter to perform other