HP StorageWorks 4000s NAS 4000s and 9000s Administration Guide - Page 171
NFS Locks, NFS supports the ability to lock files. File locking helps prevent two or more users
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Microsoft Services for NFS Note: Using synchronous writes allows for greater data integrity. Asynchronous writes will increase performance but will reduce data integrity as the data is cached before being written to disk. Changing the write state causes the NFS service to be restarted. Notify users before toggling this setting. NFS Locks Figure 95: NFS Async/Sync Settings dialog box NFS supports the ability to lock files. File locking helps prevent two or more users from working with the same files at the same time. NFS locking depends on the software application components to manage the locks. If an application does not lock a file or if a second application does not check for locks before writing to the file, nothing prevents the users from overwriting files. NAS 4000s and 9000s Administration Guide 171