Enable asynchronous I/O for file systems on HP-UX.
SAP recommends that you enable VxFS Concurrent I/O (CIO) on HP-UX file systems to take advantage of its performance benefits. VxFS Concurrent I/O is available with OnlineJFS (VxFS-Full) version 5.0.1 and later for HP-UX 11.31.
# vxlicrep | grep -i onlinejfs
# swlist -l product |grep -i onlinejfs
See your operating system documentation.