Dennis,

We currently only support having a single network drive configured via the LabKey Server. (ie configured via the Site Settings page.

 If you would like to use multiple network drives, you will need to mount each additional drive via the operating system. When doing this, please pay particular attention to

a) ensuring that the network drive will be mounted again after reboots
b) Ensure that the tomcat windows service has access to the mounted network drives. Depending on your the version of windows you are using, this might be not be simple. See http://stackoverflow.com/questions/182750/how-to-map-a-network-drive-to-be-used-by-a-service

I can help you with #2 if you run into any problems.

Thank you,