What is role of blk-availability service with non-mirrored LVM2 devices?

RHEL 6.x with LVM2.

A comment in /etc/init.d/blk-availability says, "This file is part of LVM2. It is required for the proper handling of failures of LVM2 mirror devices that were created using the -m option of lvcreate."

If none of my LVM2 devices are mirrored, do I still need to enable the blk-availability service?