You can select from the following options to tune your system for better performance. Keep in mind that these options will introduce a slight risk of data corruption in case of a power failure, so a UPS is highly recommended.
Disable full data journaling. Full data journaling makes a backup of data before writing the data out to the intended location, providing an extra level of data protection needed to prevent data corruption for RAID volumes at the expense of disk write performance.
Disable journaling. Journaling allows very quick file system check in the event of unintended shutdowns such as a power failure. Write performance with journaling enabled is slightly slower than without.
Optimize for OS X. Enable this option for best performance in Mac OS X environments when accessing the NAS over SMB/CIFS. This option introduces compatibility issues with Windows NT, so disable this option if this device will be accessed by Windows NT clients.
Enable fast CIFS writes. This option allows for optimal write performance by enabling aggressive write-back caching for CIFS transactions. Do not enable this option if shares on this device will be used by multi-user applications (i.e. Quickbooks) where synchronized writes are necessary to keep files in sync.
Enable fast USB disk writes. This option speeds up USB write access by accessing the USB device in asynchronous mode. If you enable this option, do not remove the USB device without properly unmounting it. Failure to do so can compromise data integrity on the device.
