Performing a clean install of Windows Server
When swapping out your boot drives for SSDs, it is probably best to perform a clean install of Windows Server onto your WD Sentinel rather than attempting to rebuild your existing install by exploiting the RAID configuration of your WD Sentinel.
After a clean install, you may find that the RAID configuration is broken and your two boot drives will show up individually in Windows. To fix this, make sure all the WD components are installed and that Windows Server Essentials Experience is configured.
Whitelisting an Unsupported or Incompatible Drive
When using an unsupported or incompatible drive with your WD Sentinel, you may get an INVALID DRIVE message on your WD Sentinel's LCD screen and/or a red light above the drive bay that has the unsupported or incompatible drive. To make the message and/or red light go away, you'll need to add the unsupported or incompatible drive to the WD approved drive list.
To add a drive to the drive list, first make sure that the latest WD software components are installed. The minimum version required is 184.108.40.206 which can be downloaded from the WD website in the support section for the WD Sentinel DS6100. Then go edit the DriveList.xml file located at "C:\Program Files\Western Digital\Western Digital Drive List".