I use vfs.fs.size to find disk list.it will find many network mapping disk,exp.Z:\ Y:\ O:\ .
if hostA(Z:) is hostB(D:) and hostC(Z:) is hostB(D:), when hostB(D:) free disk space is less than 5%,it will has 3 triggers and 3 alerts. I do not want to have hostA(vfs.fs.size[Z:]) and hostC(vfs.fs.size[Z:]) item.