It's a must.
Just read this quota columd as used inodes, and limit as inodes limit:
Disk quotas for user admin2 (uid 2474):
Filesystem blocks quota limit grace files quota limit grace
/dev/md2 0 314572800 314572800 2 3145729 3145729
/dev/md3 184 314572800 314572800 46 3145729 3145729
/dev/md4 109612160 314572800 314572800 1544086 3145729 3145729