Adaptec SBC-599 - Manual (Page 85)

Chapter 6 SCSI Setup and Configurations 75
Setting this option to yes reduces the load on your computer’s
power supply by allowing the host adapter to start SCSI devices
one-at-a-time when you boot your computer. When set to No, the
devices are allowed to start at the same time. Most devices
require you to set a jumper before they can respond to this
command.
Note: If the Send Start Unit Command is set to yes for
many devices, the boot time will vary depending on
how long it takes each drive to start.
Advanced Host Adapter Settings
The advanced host adapter settings should not be changed
unless absolutely necessary.
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Plug and Play SCAM Support - This option determines
whether the SCSI automatically assigns SCSI Ids to
attached SCSI Devices that support the SCAM protocol.
The default setting is Disabled.
Most non-SCAM devices tolerate SCAM protocol, so you
can enable this option even for non-SCAM devices. In rare
cases, an old SCSI-1 device may not tolerate SCAM and
may cause the computer to hang or operate erratically. If
this happens, disable this option.
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Host Adapter BIOS – This option enables or disables the
host adapter BIOS. The default setting is Enabled.
Note: Several SCSISelect options are not valid unless
the host adapter BIOS is enabled.
If you are booting from a SCSI disk drive connected to the
host adapter, the BIOS must be enabled. You should
disable the host adapter BIOS if the peripherals on the SCSI
bus (for example, CD-ROM drives) are all controlled by
device drivers and do not need the BIOS.