In earlier Zabbix versions, the Zabbix agent item vfs.file.cksum
produced different sha256 sums for the same file depending on the platform (processor architecture) – sha256 sums on AIX, HP-UX (Itanium) and Solaris (SPARC) differed from those produced on Intel x86-64 platforms.
The issue has now been fixed; however, after upgrading, monitoring sha256 sums of files on AIX, HP-UX, or Solaris SPARC may result in false positives of files having been modified.