I recently had the “pleasure” to try a NAS device, more specific a QNAP TS-410, which is handy little box which takes 4 harddrives (each upto 2TB), 2 Gigabit network ports, a few USB ports, and a 2 eSATA ports.
Very neat, but it’s let down but the lack of a decent CPU (Marvell 6281 800MHz), which shows that it takes around 18 hours to build a 3x2TB Raid5 (which really IS slow). It might come down to the drives not being aligned, as the OS (software) does not take into consideration that drives which is 1TB or larger does no longer use 512bytes per sector. 2TB drivers (mostly) uses 4kb.
The software in it self is ok’ish, one can do what one wants to do, except for one small thing which is ok for home use, but in the office it would be nice to be able to configure UID and GID per user, and group, or use an external source like LDAP or NIS – currently only AD is available, which is somewhat dissatisfying – as it does not provide UID/GID. So for usage in an environment where NFS is being used this box and any other one from QNAP is a no-go as they all use the same software.
Transfer speed, well with a bit of luck one can get about 20mb/s writing and about 35mb/s for read – that is with a raid5 build with Samsung F4 2TB’s and gigabit network – needless to say I was disappointed.
I was lucky enough to find a nice home for the thing, and it is no longer in posession.
I moved the drives to my old trusted server, and is now getting around 50-55mb/s writing.