If you are in the unique case whereas you lost a drive and at the same time you lost your OS and don’t have a backup of your configuration database, all is not lost. However, you will need to follow the steps below:
1. Import your configuration, which is stored on the first PPU.
2. The drives will show up as missing. Fix each missing drive starting with the first PPU. Click on “Restore/Swap out”
3. Select the drive to reinstate from the selection box and choose to Swap only (the last option)
4. If one of the drives is a drive you need restore, make sure that all other drives have been reinstated, and click to Swap and Restore (the first option)