17 Jan
2006
17 Jan
'06
3:32 a.m.
On Mon, 16 Jan 2006, Al Kossow wrote:
If you look at the 7970B manual, there is a
configuration
matrix which shows that the only HP drive which supported
sub 800 bpi densities and 9 track tapes is a read-only
drive with dual 7 and 9 track head stacks.
Well, not exactly. My drive has options 127, 006, 007, 012 and 023 with
mod. 236 (ser.no. 1124A00177). This means:
127: 9 track read/write (45 ips)
006: triple density select (200, 556 and 800 bpi)
007: unit select (units 0 to 3)
012: HP logo
023: installation kit
So I have a 9 track tape drive that can read *and* write (I've tested it,
it has a write enabled indicator and a sensor for the write enable ring),
and it supports three densities.
The 7 and 9 track read only option would be no. 141 opposed to 127 (9
track r/w) or 136 (7 track r/w).
(From HP manual 7970-90383)
What would be more interesting is if you could find
any
place in the ANSI standards documenting a sub 800 bpi
9 track 1/2" tape format.
No, I can't... Maybe this is HP specific.
Christian