My Book Live Duo appears to have died. How do I determine what failed

Drive is making a squealing noise. Seems to make a noise with or without the drives.

I cannot access the drive over the network. I have attempted to reinstall the software and find the drive with the search utility.

The indicator light starts blue and then turns to amber.

Do I need to purchase a new enclosure? What are my options?

How can I test the drives without investing in another enclosure.

I have 2 2TB drives setup in a mirror RAID configuration. Can’t imagine both are bad.

If it’s making an audible noise with no drives inserted, the enclosure has a failing component somewhere.   There’s no moving parts in the enclosure (no fan, etc.)

Is it too old for a warranty claim?

Unfortunately it is not under warranty.

Does anyone know if the drives are proprietary? Do I need to purchase another MBLD to recover my data?

You can recover you data easily by attaching them to a LInux computer or even a Windows PC that runs a linux read program.