Bulletin number:  313
Products affected: Z999
Description: Sun cartridge tape formats
Component: 
Date: Tue Jun 19 13:30:29 BST 1990
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This is an attempt to clear up some confusion about Sun tape densities.

We think there are three types of Sun cartridge tape drives QIC-11,
QIC-11/24 and QIC-150.

QIC-11 drives.  Can read and write QIC-11.  Thought to be extinct,
unless of course you know better!

Dual QIC-11 / QIC-24 drives.  Can read and write QIC-11 and QIC-24.
Found on Sun 3, Sun 3x and Sun 4 systems.  To use QIC-11 refer to
/dev/rst0.  To use QIC-24 refer to /dev/rst8.  When reading the system
will detect format.

QIC-150 drives.  Can sometimes read very small amounts of QIC-11.  Can
read QIC-24 and QIC-150.  Can write QIC-150.  Only found on Sun 3x and
Sun 4 systems.  To use refer to /dev/rst0.  When reading the system
will detect format.

Now comes the question of what format we should use for distribution.
The current idea is to use QIC-11 for products aimed at Sun 3 only and
QIC-24 for products aimed at Sun 3 and Sun 4 systems.

Any comments on this from the field are encouraged.