As if it wasn't enough that my kids wake up in the middle of the night crying, needing attention, now my technology has taken to doing the same thing...

Last night, around 2.30am, my Synology NAS started beeping.  I got up to investigate, and discovered that volume 1 had "crashed".  It's not a RAID (haven't got around to it yet), just a single SHR/BTRFS volume.  I seem to be able to access data through File Station in Synology DSM, and when I ran a SMART quick test, it came up with "normal", but noted 1 bad sector.  Specifically, "1 bad sectors were detected and have been automatically repaired by the disk.  Bad Sector Count displays the sum of SMART Attributes "Reallocated Sectors Count", "Current Pending Sector Count" and "Uncorrectable Sector Count".  It may indicate that the disk surface has been physically damaged.  This is repairable because data can be transferred to spare areas on the disk."

A couple of questions arise:

1. Is it time to get a new disk?  I was already planning on it, as it's reached 90% capacity, and "only" has 388GB left.

2. Is it recoverable in the short term?  And if so, what should I do?  Do I just restart the NAS, or do I need to something else?