Best Way to Back up Music Library

[gnomus]

You are probably right about the Synology forum. But for anyone reading this who might be curious, what I was supposed to do was load the new disk into the 213. Then start it up. The machine would then report that Volume 1 was degraded (which is, of course, exactly what happened - see above). It would then offer to repair it (it did offer to do this). I should have accepted that offer and the machine would then have set about integrating the new drive.

I believe that there may be ways of setting up the RAID-thingie so that you can just swap out one drive and have the whole process be automatic - clearly that is not what I had, however.

The more I have thought about this, I am less clear about what it is that the 2-disk NAS option is offering. My experience of this recent HD failure has led me to conclude that I should have just the one drive in the 213 (this is what I am in the process of doing), and use the second drive as a standalone back up. I cannot see how that is any less secure that the 2xHD NAS - indeed it may be more secure, in that the second drive can be physically located somewhere other than in the same room as the NAS. And, it will not be running most of the time like it would if put to use in the 213.