magtape device naming conventions

[Guy Harris]

> How about the following? ...while {l,m,h} is "l"ow, "m"edium, or "h"igh
> density depending on make and model of the drive.

While the scheme used in S5R2 shares the same unfortunate tendency to use a
single letter (the same "l", "m", or "h") when a longer description ("800",
"1600", or "6250") would be clearer, at least it provides a standard way of
getting at a given drive at a specified density; "l" is always 800, "m", is
always 1600, and "h" is always 6250.  There should be a standard way of
requesting a particular density that will work on all drives that support
that density; the numerical value of the density should appear in the name
used to select that density.

It might also be useful to request a "default" density (probably 1600BPI)
and a "maximum" density, but those should be kept distinct from requests for
specific densities.
-- 
	Guy Harris
	{ihnp4, decvax, seismo, decwrl, ...}!sun!guy
	guy at sun.com (or guy at sun.arpa)