Re: Packet Loss

["Steven M. Bellovin" <smb () research att com>]

In message <200012151551.eBFFpKCW23482 () black-ice cc vt edu>, Valdis.Kletnieks@v
t.edu writes:
> --==_Exmh_-322173952P
> Content-Type: text/plain; charset=us-ascii
>
> On Fri, 15 Dec 2000 09:24:04 CST, "John R. Grant" said:
> > <cringe>
> > that would be 9600 bit per inch GCR format 9-track tape, don't you think?
> > </cringe>
>
> At least in the IBM world, the options for 7-track were 200/556/800 bpi
> with even or odd parity, and mode=normal/data converter/translator. For
> 9-track the options are 800 NRZI, 1600 PE, and 6250 GCR.
>
> I still have 21 9-track tapes in my office that I need to do something with,
> as our last system with 3420-style round tapes is being decomissioned in
> the next few months.

Let's see...  6250 bpi * 12 in/ft * 1600 ft == 120M, if I haven't 
miscounted decimal places.  So you can fit 5 tapes per CD-ROM, and save 
a lot of space.

                --Steve Bellovin