The case is sealed, meaning that the user is not meant to tinker with the internals of the device. This did not prevent me from getting into the thing, though.
A Seasonic SS-250SU power supply is located at the top of the case. Its peak output power of 250 watts is quite enough for powering the NAS’s electronic components together with five modern HDDs. The PSU is cooled with an individual 4cm cooler. Despite the suspicious form-factor, the fan is quiet. The NAS is overall not very loud, yet it is not the best option for a bedroom because five HDDs, even quiet ones, will produce an audible noise in the open bays. You may want to prefer “closed” models (for example, the DS409 or the DS209) for such usage.
With five HDDs inside, the NAS had the following power consumption:
- Up to 100W at startup
- 65W under load
- 56W in idle mode with the HDDs turned on
- 30W in idle mode with the HDDs turned off
The NAS’s hardware components reside on three PCBs: a main PCB, a backplane, and an indication unit. The main PCB carries the following:
- Freescale mpc8533 processor covered with a small aluminum heatsink
- One 1GB DDR2-667 module in a SO-DIMM slot
- Marvell 88SX7042 and Silicon Image SiI3132 SATA-controllers
- Two Realtek RTL8211B network transceivers
- NEC D720102GC USB-controller
- 4MB Spansion flash memory module
- A number of smaller chips
This is the fastest platform currently used in Synology products. The Freescale mpc8533 processor has PPC architecture and is clocked at slightly above 1 gigahertz. This modern model comes with integrated controllers of PCIe and PCI buses, a 64-bit DDR/DDR2 memory controller, and two Gigabit Ethernet interfaces.
The NAS is equipped with two disk controllers from different makers to provide six SATA ports (five internal and one external port). That’s a queer solution, especially as one controller supports PCIe while the other PCI, yet there should be no difference in speed between them.
Your upgrade opportunities are limited to changing the memory module, but the default 1 gigabyte is quite enough for most applications.