Regular expressions cannot be used for creating disk monitoring in CA Spectrum.
Wildcards cannot be used for *nix disk monitoring.
Generally speaking, the absolute disk name needs to be specified for the disk monitor to work with one exception:
Wildcards can only be used for Windows disks that have the word "Serial" in them as can be seen in the screenshot below.
For Windows disks, if the disk monitor table lists the disk with the word "Serial", then wildcards can be used.
In order to activate this feature you need to make the following change in the $SPECROOT/SS/.vnmrc file and add the following line:
Once that is added you must stop and restart the SpectroSERVER for the changes to take effect.
You will then be able to monitor Windows filesystems based on C:\ as shown below: