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HDK Technical Reference

SDI

The Storage Driver Interface (SDI) is used to implement SCSI and other storage device drivers on SVR5.

SDI supports four types of devices:

SDI is a versioned interface as discussed in ``DDI interface versioning''. The following table shows which interface versions can be used with which operating system releases.

SVR5 SDI interface version support

O/S release Supported versions
SVR4.0 ddi 1, 2
SVR4.2 sdi 1
SVR4.2MP sdi 1
SCO SVR5 1.X sdi 1
SCO SVR5 2.X sdi 1, 2
SVR5 sdi 2, 3, 4
SVR5, Release 7.0.1  
SVR5 Release 7.1 sdi 2, 3, 4

sdi: 4 requires ddi: 7, 7mp, 8, 8mp.

Note that the software recognizes $interface sdi 3.1, which was an interim version released to allow early access to some SDI 4 functionality. SDI version 3.1 is not an official interface version; drivers should use SDI version 4 instead.

For detailed information about writing SDI drivers, see Developing SDI storage drivers, Section D2sdi manual pages, Section D3sdi manual pages, and Section D4sdi manual pages.


© 2005 The SCO Group, Inc. All rights reserved.
OpenServer 6 and UnixWare (SVR5) HDK - June 2005