[Info-vax] VAX 6000 on Young Sheldon

Johnny Billquist bqt at softjar.se
Sat Feb 11 19:02:23 EST 2023


On 2023-02-11 17:26, Arne Vajhøj wrote:
> On 2/11/2023 11:18 AM, Tony Priborsky wrote:
>> I'm pretty sure it didn't write a native VMS backup saveset -
>> remember the CPU on the HSC was a PDP-11.   Logically the backup was
>> the equivalent of VMS "BACKUP/PHYSICAL".  I seem to recall that at
>> some point the VMS backup could restore (read) a HSC backup.
> 
> So no CRC and no redundancy groups?

Depends on how you mean that. Tapes have CRC on the data unless I 
remember wrong. Just like disks have. But no redundancy or ECC, so if 
media got corrupted, you loose.

But HSCs are pretty nice. Been a while since I used one.

   Johnny



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