I just found a review that CNET did on the Tablo back in May. I left the following comments:
CNET - Firmware 2.2.3 is scheduled for July 2015, which will add
support for large drives. They have tested a 5 TB Seagate drive and it
works. Also to be fair, there is a Roku Preview Channel, which is a
private channel with a link at www.tablotv.com and the current released
version. Both will exist until the Roku Preview app = other viewing
options. The new firmware adds bulk delete, and the Roku Preview App
has a TV Guide like the ipad one. I am currently running 2.2.3 beta and
it is about ready to be released. This go around I discovered (and
others confirmed) a bug, but Tablo had it fixed in a couple of days.
Please consider doing another review after 2.2.3 firmware is released.