[Info-vax] VAX VMS going forward

[Arne Vajhøj]

On 7/25/2020 9:46 AM, Scott Dorsey wrote:
> =?UTF-8?Q?Arne_Vajh=c3=b8j?=  <arne at vajhoej.dk> wrote:
>> I also suspect that the actual recovery rate may turn
>> out somewhat less than 100% if attempted to read them all.
>> Bad tapes, bad tape drives etc..
> 
> My experience with nine-tracks is that there is nearly a 100% recovery
> rate.  Occasionally I'll come across 3M Black Watch tapes that need special
> processing, but for the most part one cleaning pass and they read through
> fine.

If the tapes were 5 years old, the tape drive was 5 years old and
the tape drive was used every week, then I would expect nearly 100%
as well.

But I suspect a lot of very old tapes, very old tape drives and
tape drives that has not been used for years.

Arne