Product Tour - more
For the World Edition II, combinations of flashing and rotating lights indicate RAID rebuild or that the RAID is operating in a degraded condition. If both rings flash simultaneously, it indicates that the device is overheating and you should shut it down. There is no auto-shutdown or email notification of any kind.
Figure 2: My Book World Edition Rear
The rear of the World Edition (Figure 2) has a jack for power, a reset switch, a 10/100/1000 Ethernet port and a single USB 2.0 port that can be used to add an external hard drive. It does not function as a print server, however, nor can you monitor a UPS on the USB port. There’s also a Kensington security slot so that you can physically secure your World Edition with a Kensington or other compatible cable lock.
Noticeably absent is a cooling fan. My single drive unit didn’t have a fan, and based on the photos in the instruction manual, I’m assuming that the World Edition II also lacks a fan. This makes the device a good acoustical office mate, but I did note that the drive was quite warm when I disassembled the case. Still, in more than two weeks of continuous running it didn’t overheat.
Figure 3: My Book World Edition showing drive and LED display board
Though the instruction manual includes extensive instructions for disassembling and replacing a drive in the World Edition II model, the World Edition really wasn’t designed to be consumer accessible. I was able to remove the case (it’s a bit tricky) to reveal the view shown above in Figure 3. Removal of a few more screws and the SATA power/data cable header let me lift off the drive and its mounting plate to get a view of the main board (Figure 4).
Figure 4: My Book World board
The heart of the WE is an Oxford Semiconductor OXE800DSE Ethernet to dual SATA NAS controller with encryption—the first time we’ve seen this used in a NAS. This part has an ARM926 processor, three USB host ports, dual SATA host controllers and a hardware RAID engine supporting RAID 0, 1 and disk spanning.
A VIA VT6122 Gigabit Ethernet Controller provides the single 10/100/1000 LAN port and there’s a single Samsung K4H561638 16M x 16 DDR chip on the back of the board providing 32 MB of memory. There’s not a flash chip to be found on the board and there is no flash in the Oxford chip. Therefore, the entire OS must reside on the drive.
Power consumption was measured at 15W—right on the nose for our NAS power rule-of-thumb. Note that there are no power-saving features, however.