SCSI Pass-Through Direct

SCSI Pass Through Direct (SPTD) is a proprietary device driver and application programming interface (API) developed by Duplex Secure Ltd. that provides a new method of access to SCSI storage devices. The SPTD API is not open to the public.

SCSI Pass Through Direct (SPTD)
Developer(s)Duplex Secure, Ltd.
Stable release
1.90 / January 19, 2018 (2018-01-19)
Operating systemWindows 2000; Windows XP; Windows Vista; Windows 7; Windows 8; Windows 10
PlatformIA-32 and x64
Size1 MB
TypeDevice driver; Application programming interface
LicenseProprietary
Device driver: Freeware
API: Commercial software
Websitewww.duplexsecure.com/en/home

Uses

SPTD is used by Daemon Tools and Alcohol 120%. It is also utilized in PowerArchiver Pro 2010 (v11.60+); however, a configurable option is available to disable it.[1] It is known to be incompatible with kernel-mode debugging including WinDbg and Microsoft's other command line debuggers as well as SoftICE. Further, certain versions of the freeware optical media burning software ImgBurn will issue a warning, "SPTD can have a detrimental effect on drive performance", if the application detects that SPTD is active or installed.

ConeXware, Inc. (the maker of PowerArchiver) claims that in their internal testing, SPTD improved optical drive performance by up to 20 percent in comparison to the "old school" SCSI Pass Through Interface.[1]

See also

References

  1. "PA 2010 11.60 Preview #3 – improved burner experience…". PowerArchiver Blog. ConeXware, Inc. 10 Sep 2009. Retrieved 30 May 2011.

Further reading

  1. "SCSI Port I/O Control Codes". Microsoft Developer Network. Microsoft Corporation. 3 May 2011. Retrieved 30 May 2011.
  2. "SCSI Pass Through Interface". Microsoft Developer Network. Microsoft Corporation. 3 May 2011. Retrieved 30 May 2011.


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