Odd PDP-11 tape related question

From: Antonio Carlini <arcarlini_at_iee.org>
Date: Sun Jan 18 16:04:27 2004

> That was me, but what I actually said was that most DDS1
> drives won't
> load a DDS2 tape. I can't remember the "official" name of
> the feature,
> but almost all 4mm drives do media-format detection, and will
> just spit
> out a tape larger than they rate for. I do recall that the DEC
> firmware doesn't do that, but I'm still fairly sure it won't work.

I don't know about other drives, but the TLZ04 will happily
accept a 90m tape rather than the 60m ones it was designed
for. I'm sure of that because of all the warnings that
appeared once the 90m tapes became common, to the effect
that using one in a TLZ04 would appear to work for about
as long as it took for the head to wear away significantly.
(It was never specified whether this would happen within
a few passes or whether it might take a little longer.
My TLZ04s were quite happy to chew 60m tapes so I
never had a chance to feed one a 90m one :-))

I expect that later drives might have been more tolerant
or careful, but I try to be nice the the TLZ09 I have now.

Antonio
 
-- 
---------------
Antonio Carlini             arcarlini_at_iee.org
 
Received on Sun Jan 18 2004 - 16:04:27 GMT

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:36:46 BST