HP UX Common Internet File System (CIFS) Client/Server Software manual

NeTservices provides byte range locking for UNIX/NFS when the advisory locking protocol is adhered to. They make no statement about PC-NFS. CIFS/9000 provides byte range locking for UNIX, UNIX/NFS and PC-NFS.

NeTservices provides oplocks support for Windows-only file access. Advanced Server for UNIX oplock support is enabled server-wide, and automatically disables UNIX/NFS byte range lock support, so oplocks can only be enabled for a purely Windows homogeneous client environment. CIFS/9000 enables oplocks per-share, so shares that require UNIX and/or UNIX/NFS locking can co-exist with oplock shares. CIFS/9000 has a planned enhancement to interoperate Windows oplocks with UNIX, UNIX/NFS, and PC-NFS.

37