dak(7)


dak -- Mylex DAC960 Array Controller

Description

The Mylex DAC960 EISA SCSI Disk Array Controllers are high-performance multiple channel controllers for disk arrays. The dak host adapter driver provides a Storage Device Interface (SDI)-compliant interface to the Mylex DAC960 adapter.


NOTE: The DAC960 EISA adapters are no longer supported by Mylex.

The supported devices are the PCI-based DAC960P, PL, PD, PDU and PG.

The Mylex SCSI host adapter driver enables SDI-compliant target drivers (such as sd01 and st01) to communicate on the SCSI bus with target controllers and logical units. This allows normal access to mass-storage devices using standard system interfaces and filesystems.

It is also possible for a user to access the SCSI-bus subsystem directly by using the driver pass-through interface. This allows the user to issue sb control blocks directly to a SCSI target device. To find the appropriate pass-through device to use for a particular target device, the user should open(2) the character special file for the device in question and then issue the B_GETDEV ioctl. The device value returned should then be used to create a character special file which, when opened, can be used for pass-through (SDI_SEND) ioctl.

ioctl calls

dak supports all of the SDI pass-through ioctl(2) commands documented on the sdi(7) manual page.

Files

/usr/include/sys/dak.h

/usr/include/sys/scsi.h

/usr/include/sys/sdi.h

/usr/include/sys/sdi_edt.h

/usr/include/sys/sdi_comm.h

/etc/conf/pack.d/dak/space.c

References

adsa(7), adsc(7), adse(7), adss(7), dpt(7), ioctl(2), mcis(7), sc01(7), sd01(7), sdi(7), st01(7), sw01(7), wd7000(7)

Notices

Exercise extreme caution when using the pass-through interface. It is possible to interfere with normal system I/O and cause hangs if pass-through is used to an active device. Pass-through should only be used to a device that is otherwise quiescent.
30 January 1998
© 1998 The Santa Cruz Operation, Inc. All rights reserved.