Here's the spec:
175(D) x 80(W) x 120(H)mm
Aluminum & Plastic
2x 3.5" Sata SSD/HDD's (Up to 4TB volumes)
USB 3.0 B to A
0 and 1
40mm 2 pin cooling fan
Windows XP/Vista/7/8, Mac OS 10.x and Linux
Made from aluminum for the most part the DS322 is quite heavy for it's size and gets even heavier with installed drives. Weighing around 1.8KG when loaded with two drives it is very reassuring knowing that slight knocks and nudges won't budge this device so the chances of you knocking this over and potentially damaging the internal drives & losing your data is very slim. Like this device.
The ends of the DS322 are made of a plastic that I wouldn't say is the highest quality but it fits in with the look and texture of the aluminum portion. The front is styled in a server style look with angled venting in front of both drive bays and a line of indicator led's to compliment them. I find too many external enclosures to be to boring and uninteresting but the DS322 definitely stands out for me.
My only complaint with the plastic pieces the DS322 is the front panels integration with the metal chassis. The lock design which you will see later means that it's secure enough to not fall off when locked but it wiggles around a lot and can make quite a bit of noise when you move the enclosure at all as does the hard drives which again we will come too.
Moving on from the plastic and onto the aluminum portion of the chassis we find a smooth black painted metal with the Silverstone logo in white on both sides. The aluminum differs internally in a heatsink type fashion between both 2 and 4mm in thickness making this extremely tough and capable of withstanding extremely large amounts of pressure.
Taking the front cover off reveals the two bays that house 3.5" hard drives (not included), an led information/diagnostic panel and a switch box that you will use to choose which raid mode you want to use our of 0, 1 or neither. As you can see the drive bays have absolutely no locking or secure mechanism to make sure the devices don't move around internally or put unnecessary pressure on the sata connections. With drives in the DS322 can get quite annoying when moved as the metal hitting metal noise is far from attractive. other than that the led panel display and raid switch box are simple and easy to use with leds for (top down): power, drive bay 1 activity, drive bay 2 activity, no raid, raid 0 and raid 1. Instructions for the raid switch are on the inside of the front panel.