've ordered this NAS as a successor for my NSA-220.
Lack of space, I did not have.
But unfortunately, films with a capacity of 15GB starting up to stutter.
After the first few minutes, there were sound skips and soon was out of the liquid film a still picture show.
For high data rates is probably overwhelmed (in conjunction with the 500 MHz Prozi) the Gb interface.
I have taken a long time thinking whether there was now a QNAP (no GHz!) Or a
Synology DiskStation (DS211j) should be.
The summer has come out NSA-221 looks the same, cost just under 110 euros
almost 60 euros less, but the specifications are, however, much worse.
The NSA320 is there a completely different caliber.
1.2 GHz and 512 MB memory and 1 Gbit LAN connection.
Populated I have a good piece with two WD20EARS (Western Digital Caviar Green 2000GB)
as max. Stage in the JBOD.
So I formatted 3.6 TB available.
Enough space for my music and film collection.
Powers all over the FileZilla FTP client with data I get on
Transfer of approximately 45 - 50 (Mbytes per second).
Together a Gigabit Switch ELT (TP-Link TL-SG1008D) and a Windows 7 computer.
To retrieve the data on a WD TV Live Media Player (now also smoothly).
The only thing that bothers currently is a now and then "whistling" fan.
I must think it over, if I replace the unit or the fan.
But for the money certainly worth considering (if a 2BAY sufficient) to buy the device.
For me it was, among other things, buying decision, which my other Zyxel already
nearly 3 years still working (albeit slowly).
I hope my opinion can help with the purchasing decision.
PS: Synology DiskStation should also "whistle" and costs 20 euros more.