HP CIFS Server 3.0d Administrator's Guide version A.02.02 (Edition 5)

HP-UX Configuration for HP CIFS
Configuring Kernel Parameters for HP CIFS
Chapter 12 261
Memory Requirements
Each smbd process will need approximate 1 MB of memory. For 2048
clients, therefore, the system should have at least 2 GB of physical
memory. This is over and above the requirements of other applications
that will be running concurrent with HP CIFS.