QNAP TS-459U-RP Turbo NAS Reviewhardnrg -
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The TS-459U-RP is not meant to be opened, as it does not require internal user maintenance, and therefore has a "warranty void if removed" sticker on the side of the chassis. As this is a review, I opened up the NAS to take a look inside, so that you can see the internal hardware.
The chassis allows a very conventional layout of hardware, with the hard drives at the front, ventilation airflow fans in the middle, power PCB and PSUs at the rear left, and a mini ITX motherboard at the rear right.
As this is a 1U unit, it's only physically possible to fit 40mm fans in this NAS, however these fans provide plenty of ventilation, drawing air through the caddy vents at the front, and blowing to the rear, with the PSU fans exhausting the warm air. ADDA specialise in forced air cooling, and this particular fan can push 12.13 CFM @ 9000 rpm, at a noise level of 38.8 dB(A). So, while far from silent at top speed, the NAS cooling is handled with reassuringly high performance fans from a specialist manufacturer.
Each drive bay has hot-swap SATA data/power connectors attached to the chassis. The SATA data cables are sleeved and run to individual headers on the motherboard. The RAID is therefore powered by the onboard Intel ICH9R chipset, rather than a dedicated hardware RAID card/chipset.
If you take a look at the silk-screen on the motherboard, you can see that it appears to be the same board as one of its bigger brothers, the TS-859 Pro.
The motherboard has a single DDR2 SODIMM slot, populated by a 1GB stick of Data Specialties PC2-6400 CL5 Samsung-based RAM.
Behind each RJ45 port, you can see an IC chip to handle the LAN. These chips are Intel 82574 controllers, the same class as the chips used in the server-class Intel Pro/1000 NICs, highly regarded as the best performers for LAN communication.