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1993-11-16
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DOCUMENT:Q103935 02-NOV-1993 [W_NT]
TITLE :QIC 40/80 Tape Backups Use a QIC-117 Driver in Windows NT
PRODUCT :Windows NT
PROD/VER:3.10
OPER/SYS:WINDOWS
KEYWORDS:
----------------------------------------------------------------------
The information in this article applies to:
- Microsoft Windows NT operating system version 3.1
- Microsoft Windows NT Advanced Server version 3.1
----------------------------------------------------------------------
Windows NT supports the use of the QIC-40/QIC-80 tape backup drives.
However, the driver they use is named QIC-117.SYS; there are no files
named QIC-40.SYS or QIC-80.SYS.
According to the QIC documentation, QIC-40 and QIC-80 are two types of
"Flexible-Disk-Controller-Compatible Recording Format for Information
Interchange." The specifications are as follows:
20 tracks, 10,000 bpi, MFM Encoded (QIC-40)
28 tracks, 14,700 bpi, MFM Encoded (QIC-80)
QIC-117 is described as a "Common Command Set Interface Specification
for Flexible Disk Controller Based Minicartridge Tape Drives."
Therefore, QIC-40/80 is the name of a physical format standard and
QIC-117 is the name of the command set used on QIC-40/80 drives, which
is why the driver is named QIC-117.SYS in Windows NT. In other words,
QIC-117 is the interface used to communicate with the drive while
QIC-40/80 is the physical format used on the tape. Windows NT Backup
uses Microsoft Tape Format (MTF) as its native format. MTF is not read
or write compatible with QIC-40/80. Thus you cannot exchange tapes
between Windows NT Backup, which uses MTF, and Colorado Memory
Systems' Backup software, which uses QIC-40/80.
The QIC products included here are manufactured by a vendor
independent of Microsoft; we make no warranty, implied or otherwise,
regarding these products' performance or reliability.
Additional reference words: 3.10 third-party third party isv
3rdparty
KBCategory:
KBSubcategory: hrdwr
=============================================================================
THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS
ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO
EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.
Copyright Microsoft Corporation 1993.