HP CIFS File Locking Interoperation

EMC’s Celerra documentation claims support of oplocks, but makes no mention of

UNIX/NFS interoperability. They recommend turning oplocks off when “handling critical

data with the need to avoid even slight data loss”, which implies that they do not

interoperate with UNIX/NFS. CIFS/9000 has a planned enhancement scheduled to provide

UNIX, UNIX/NFS, and PC-NFS oplock support.

Empirical data will be added when test equipment becomes available.

HP Sales Force personnel report that customers have been informed by EMC that Celerra

provides comprehensive cross-platform locking, including:

• Byte Range

• Mandatory Share Mode (Open Mode)

• Non-Locking NFS client

Please read Chapter 3 and Appendix B.

See Appendix B.5