I just started a restore that read multiple savesets at the same time.
I recall noticing parallel recovers after we upgraded from 6.0.2 to
7.1.2.  At 6.0.2, I'm pretty sure they were serial.

Isn't there a file you can touch in /nsr/debug on the server that will
enable parallel restores?  I can't remember the file name and it's not

turning up doing a `strings' on the nsr*d binaries, but you could probably figure it out by doing a truss (or your platform's equivalent, e.g. strace

on Linux) on `nsrd' with the `-f' option on your server, and then do
a recover of a single file.  You should see one of the daemons involved
in the process call either "access()" or "open()" or "stat()" on one or
more files in /nsr/debug.  One of those is the file that enables parallel
recovers.

It used to be that Networker would recover files from multiple savesets
at once (for instance, it would recover files from /u01, /u02, /u03,

and /u04 at the same time). Currently, however, Networker recovers them serially - it will recover files from one saveset (say, /u01), and, when

it completes that, it will start recovering files from the second
saveset (say /u02), and so on.

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