[Info-vax] VMS to VMS data copy options/performance when losing a DECnet link

Steven Schweda sms.antinode at gmail.com
Fri Apr 8 11:55:58 EDT 2022


> [...] backup to local disk savesets (using the /DATA_FORMAT=COMPRESS
> option) [...]

> [...] fix the attributes, and restore them because doing even a zero
> compression encapsulating ZIP takes too much time for the larger
> savesets (ZIP would preserve the backup saveset file attributes).

   If all you wanted Zip+UnZip to do was preserve the attributes of a
BACKUP save set, then I wouldn't bother.  There are enough DCL scripts
floating around which can restore them in near-zero time.

   It might be worth a quick experiment to see whether BACKUP without
compression followed by Zip with compression makes any sense.

> The current VMS to VMS is done with DECnet copies of individual files,
> [...]

   The principal advantage of new DECnet (ising IP) is that it works
like old DECnet.



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