What would cause a VAR directory to disappear? I'm getting some "A
scheduled 'work to do' took over one minute to be run" errors on the
console and when I looked at the volumes, I realized the VAR directory
was missing.

What would cause this?

It's on a NW6.0sp5 server with edirectory version 8.7.3 It's clustered
with another server, but the other one doesn't have any volumes mounted
on it.