Well it looks like I had less success with the NAS than I thought. I replaced 2TB drive with a brand new 4TB but the errors just multiplied. I have successfully backed up what I had stored on the NAS (only 20 GB in size) so I might just follow its suggestions of reinstalling the OS from the assistant program, only there's no option in that program to do that!
I might do some more research first - the help pages talk around doing that without giving details! For noww the DS418j is powered down until I get some answers.
And I discovered that there's an entire user's manual I've never seen online (which I've since downloaded)! The NAS came with a two sided sheet that more or less gave a link to a download to install the the OS. :P
ReplyDeleteAs it happened, I was finally able to add the 4 TB drive to the storage pool, and also finally tracked the error to disk 4, and old drive with a dodgy sector. I can remap that, and when I can afford it, will get a second 4 TB drive for the pool.
synology.com - Download Center - DS418j | Synology Inc.