A bit pricey, maybe, but it does the job of high volume storage superbly with plenty of space for back-up using the RAID options. The unit operates quietly and is quite small, given the amount of storage it can accommodate. It also works reasonably quickly, although the speed of wireless networks in particular is likely to be limited by the capability of the wireless hub, switch or laptop / PC Etc.
My only quibble is that the automatic power-down feature which is supposed to operate when network connections are closed only seems to work with a wired connection. I have a wireless laptop but the TeraStation will not 'wake up' when the laptop is switched on unless the wired PC is already on. There is a simple switch on the back of the unit which overcomes the problem but it means the unit won't power down automatically when not in use.