Move Itunes and Apple TV to external NAS drive

yes its a good idea just map a drive to the nas share from your pc and make sure you make the drive mapping perm. then point your itunes to the new mapped drive location for all your music and films so your apple tv will see your new location.

It is NOT a good idea - iTunes does not play well with network attached storage, or network folders in general. The iTunes metadata is stored in a big file which it requires block-level access to. This is not efficiently implemented for network based storage. You'll have performance issues, lagging/hanging, database corruption etc.

Your best bet is to a) upgrade or add a new hard drive to your computer,   b) connect an external hard drive and use that,  or   c) if you must use a NAS, at the very least make sure you have gigabit network speeds.

Apple TV is intended to connect to your computer over the network using Apple's "Home Sharing" system - it doesn't to my knowledge maintain it's own database for your media.

I use a seagate home Nas hub.  It works for me iTunes, apple tv, vlc player/ Streaming, Xbox movie Streaming. I have not seen any of your problems Frosty but i do have a great netgear wireless router which the nas is pluging into..

The only other way is to buy a external 1tb drive and have your iTunes library on that but you will get frustrated having to keep plugging the drive in when you want to use iTunes.

I don't particularly understand Frosty555's comment.

You would store the iTunes metadata on the local machine; it doesn't take up any space at all.  You would just move the music itself to the NAS, and set iTunes to point at the NAS.  I don't think iTunes even LETS you store the metadata on the network drive.

I keep my entire family's iTunes music libraries on a Synology NAS, with no problems at all.
Each person's own PC has iTunes installed, and each PC has that person's iTunes metadata (the library files).  But the music itself resides on the NAS, and iTunes is configured to look for it there, as well as to store newly added music there.

Can you also tell me the easiest way to do this please, to move all the data?

Thanks