[Info-vax] RMS internals?

[glen herrmannsfeldt]

In comp.os.vms Al Kossow <aek at bitsavers.org> wrote:
 
> Having read literally thousands of 9-tracks, 800bpi is problematic in 2009.
> 1600 and 6250 can be MUCH more reliably read today than 800.

It looks like nothing is now.  800 BPI was problematic in the 1970s,
and 1980's, and likely in the 1960's.  If you read on the same drive
it was written on, without changing the head alignment, you have a
good chance of reading it back.  Otherwise, change the head azimuth
until it works.

-- glen