You can use the vxvolgrp command to remove the maximum IOPS setting.
See the vxvolgrp(1M) manual page.
For example, to remove the maximum IOPS setting from application volume group datavol_grp:
# vxvolgrp -g oradg clear datavol_grp maxiops # vxvolgrp -g oradg list datavol_grp Volume Group: datavol_grp volume(s): datavol1 datavol2 datavol3