fdhb -- Adaptec AHA-2920 host adapter series and Future Domain Corp 1650, 1670, 1680, 600, 700 SCSI host adapter driver

fdha- Future Domain Corp 1650, 1670, 1680, 600, 700 SCSI host adapter driver (old name)


fdhb is the device driver for Adaptec AHA-2920 series PCI-to-SCSI host adapters and Future Domain Corp 1650, 1670, 1680, 600, and 700 SCSI host adapters.

Refer to the Compatible Hardware Web Pages. to determine the support status of your host adapter, or contact your system supplier.

Configuring the fdhb driver

You can configure the fdhb driver using entries in /etc/conf/cf.d/mdevice and /etc/conf/sdevice.d/fdhb. See mdevice(F) and sdevice(F). Changes to these files take effect once you relink the kernel using link_unix(ADM) and reboot the system.

Configure fdhb driver-specific characteristics by editing the /etc/conf/pack.d/fdhb/space.c file.

Boot time configuration of SCSI

Use the bootstring(HW) parameters to override the default hardware configuration information. Of special interest are the adapter= parameter that specifies information for the host adapter card that plugs into or is part of the motherboard, and the periph= parameter that specifies information about the host adapter being used by one of the generic peripheral interfaces (Sdsk, Srom, or Stp).

ioctl commands

The fdhb driver supports all standard SCSI ioctls that are defined in the <sys/scsicmd.h> header file and documented on the scsi(HW) manual page.


These error messages associated with fdhb may display on the console. See messages(M) for general information about kernel error messages, including a list of generic device driver errors.

CONFIG: fdha: Out of jobs (FDH_SCSI_JOBS = n exceeded)
Too many SCSI commands were pending to be dealt with.

NOTICE: fdhb: Non-existent adapter m (only n adapters)
The specified host adapter (m) could not be found.

NOTICE: fdhb: Unexpected reselection device id=m lun=n error

NOTICE: fdhb: Unexpected SCSI reselection device id=m lun=n error
One of the peripheral devices made an unexpected reselection.



SCSI interface header files

See also

boot(HW), link_unix(ADM), mdevice(F), mkdev(ADM), sconf(ADM), scsi(HW), sdevice(F)

``Adding SCSI host adapters and peripherals'' in the SCO OpenServer Handbook
SCO OpenServer System Administration Guide

© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003