The file system of a M3 Business Engine Application server and Database server (or combined server) must be set up in the following fashion.
Create a directory /u01 to be used as mount point
# mkdir /u01
Create a redundant file system(ext4) for lcm and M3 binaries and mount it on /u01.
Start size : 50-100 GB, mount option 'noatime'
For detailed information see File systems and M3 database structure – database serverand Tuning.