I'm looking at a QNAP HS-210 NAS unit for home use.  I am very interested in feedback from anyone who has used one.

I'll look at internet reviews as well, but you never really know how genuine those are.  I know QNAP have a good reputation generally.

This is a fan-less 'silent' NAS.  It will be installed in the office or lounge and will also come with us on extended caravan holidays, so it needs to be quiet.

Two essential purposes: -

1) Backup for my surface pro (64GB)
2) DLNA media server: To store CD quality audio files and photo files.  I would also store a small number of HD video files.  I tend to delete these after I watch them, so would only expect to store say 10 at a time.

Not a huge data load.  I was planning on installing two WD red HDDs, using one as a mirror, and backing up onto a USB external hard drive for offsite storage.