VTrak D5000 Series offers 3 different Sync Modes when creating New NAS Shares. They are shown below.
1) Standard: This is the default option for the NAS Share. Synchronous file system transactions (fsync, O_DSYNC, O_SYNC, Etc) are written out to the Intent Log.
2) Always: This mode will always ensures that every share transaction is written and flushed to stable storage by a returning system call. This value has a significant performance penalty.
3) Disabled: In this mode, Synchronous requests are disabled. Share transactions are only committed to stable storage on the next transaction group commit, which might be after many seconds. This value gives the best performance.
We can choose any one of them under the “Expand Advanced Settings” option in the Web Interface.