Lost in the world os NAS's, please help beginner.
What nas do i need, i'm totally confused 
These are my thoughts:
Removable drives, if one HD goes kaput.
2 drives instead of 1, for back up purposes.
Wireless. Is this UPnP/DLNA?
Whats RAID and do i need it for home use?
Can you get silent nas drives?
And how about SSD?
How much room do i need for FLAC files, 1tb looks popular, how many tunes wil that hold?
I've looking around and its a minefield with prices starting from under £100 to over £1000, whats the difference.
Sorry for all the questions but i really have no clue.
Thanks Andrew. A great read and very informative, though slightly daunting/scarey.
Not that daunting – I mean, if I can do it...
No, it's NOT a backup, both drives are written at the same time, you delete something accidentally it's deleted from both drives.
No it isn't and you don't want a wireless NAS it's too prone to dropouts, wire the NAS to your router.
Yes you do, it's what saves you from drive failure, data is written to two drives simultaneously if one fails the other carries on without it (in a mirrored configuration).
Too expensive for any reasonable amount of space.
How many have you got? Typically a CD is halved in size with FLAC, so about 3-400MB per CD, so 1TB would give you around 3000 CDs.
*Clarkson* POWWWWER!
Thanks Andrew. A great read and very informative, though slightly daunting/scarey.
It's actually much easier than you think. Check this thread:
http://www.whathifi.com/forum/computer-based-music/nas-upgrade-question
Okay, i was going to wire the nas to the olive instead 
Thanks Andrew. A great read and very informative, though slightly daunting/scarey.
It's actually much easier than you think. Check this thread:
http://www.whathifi.com/forum/computer-based-music/nas-upgrade-question
Great link and good work bb 
Funny you should mention that...
Consulting Editor, What Hi-Fi? Sound and Vision/whathifi.com Audio Editor, Gramophone