How do I perform a low level format?

We recommend performing a Low Level Format of the entire volume after configuring the RAID mode. This will write zeroes to all sectors of the RAID and define where the tracks and sectors of the RAID are located, which will result in optimal performance.

To perform a low level format using Windows:

1. Download and install HDDGURU Low Level Format Tool.
2. Launch HDDGURU.
3. Choose the RAID volume to Format. Click Continue.
4. Go to Low Level Format Tab, then click Format This Device.
5. It will can take up to 48 hours to finish depending on the connection method and size of RAID.
6. Upon completion, you can now format it with a file system of your choice using Disk Management. Please see FAQ #8.

To perform a Low Level Format using Mac OSX:

1. Configure the RAID and connect it to your Mac.
2. Open Disk Utility. (Applications folder > Utilities > Disk Utility). From the list on the left, click on the external RAID with the size in GB (not the indented item underneath).
3. Click the 'Erase' tab at the top of the application.
4. Select the drop down menu under 'Volume Format' and select Mac OS Extended (Journaled) or another format if desired.
5. Click 'Security Options' and select 'Zero Out Data'. Click Ok
6. Click 'Erase'. You will be presented with an 'Are you Sure' dialog.
7. Click 'Erase' to perform a Low Level format of the RAID volume.