The following example turns quotas on for the file systems on the /dev/dsk/c0t4d0s2 and /dev/dsk/c0t3d0s2 slices.
# quotaon -v /dev/dsk/c0t4d0s2 /dev/dsk/c0t3d0s2 /dev/dsk/c0t4d0s2: quotas turned on /dev/dsk/c0t3d0s2: quotas turned on