total drives capacity inforamtion

hi,

We have cluster set up active and passive nodes here active node allowing only 2 remote connections, those two remote connections are full I am unable to accessing the server.

Here client asking me like please send me the report for the total number of disks having on active node and each disk how much capacity (like GBS).

If I can run the below SP it’s showing only free space of the each disk,

XP_FIXEDDRIVES

But I need a total capacity of each disk.