How to increase write performance on ReadyNAS

You may notice that ReadyNAS may seem a bit slow on writes using the default configuration. There is a way to increase that write performance significantly.

First, you will need a Uninterruptable Power Supply (UPS) with a USB connection. It doesn't have to be a large one, just big enough to protect the data in case of the power failure. A 250VA unit will be more than adaquate. Plug the ReadyNAS in to the power plug in on the UPS, making sure you plug in to the protected outlet. Next you need to connect the USB connection from the UPS to USB connector on ReadyNAS. Now turn it on.

Once the UPS is connected, ReadyNAS will automatically turn on the Write Cache option on drives. For further increase of writes, turn off the full journaling option. You can do that by clicking on the System button. If you don't see the System button, make sure you click on the Advanced Control button first. Then click on the Performance tab on the top. Then check the second option, Disable full data journalling for RAID 5 volumes, and click apply.

You should now see a large improvement on write performance of ReadyNAS.