Hitachi XP P9500 User Manual page 134

File names are created by using the value in the Hitachi Network
Objectplaza Trace Library utility's Output (folder and prefix), adding
2 onto the end, and then adding a file number onto the end of that. The
default file names range from hntr21.log to hntr216.log. Note that 2 is
part of the integrated trace file name and does not represent part of the
file number.
7-6
Utility Reference
Hitachi Dynamic Link Manager User Guide (for VMware(R))