[Info-vax] Unexpected error using ZIP for OpenVMS

[Phillip Helbig---undress to reply]

In article
<83073501-d7bc-46b8-9df7-f7e103c197ce at q9g2000yqe.googlegroups.com>,
Steven Schweda <sms.antinode at gmail.com> writes: 

> > Depending on one's hardware, it might be faster to have the source and
> > destination on the same disk or at least on disks with direct
> > connections to the same machine (say, a hobbyist system with relatively
> > fast controllers and disk but slow ethernet) or on different disks (say,
> > where there is a high-speed interconnect so the more distributed the I/O
> > the better).
> 
>    Yes, some things are faster than others, but if the user
> wants the final result in a particular place, then the
> program will need to write it out there, whether or not it
> writes it someplace else first.  It's not obvious (to me)
> that it's ever faster to write the archive once to a
> temporary location, then read it back, and write it out to
> the final location.  But you can do it if you want.

Right.  However, in two common cases, it might not matter where the 
destination is, so one can choose the fastest place.  One case would be 
zipping a file before transferring it over a network then deleting the 
zipped file.  Another case would be zipping a file to be archived then 
deleting the original version.