Closer Look at Terra-Master D2-310
Outer shell of D2-310 is made from aluminum and is scratch resistant. Front and back of the unit is made completely from ABS plastic. Device is actively cooled by a single 80mm fan. Color of the device is ‘silver’ and front and rear bezels do match to the aluminum base.
There are two of informational stickers that are on D2-310. They show instructions on how to install new drives and how to set up a RAID configuration. Note: If you are changing raid type of the device, you will lose data and will have to re-format your drives.
On the bottom of the unit there are ventilation holes that help with keep internal components and drives cool. Rubber sticker feet keep D2-310 stable on the flat surfaces. The top of the device does not have any markings (besides the sticker) or ventilation holes.
On the back of D2-310 there is the power connector, Type –C USB 3.1 connector, RAID selector switch (Single, JBOD, RAID 0 and RAID 1) and a reset switch. In Single mode the unit advertises two drives independently to OS. JBOD (Just a Bunch of Drives) mode combines any drive sizes in to one volume. RAID 0 combines two drives in to one combined volume and in RAID 1 mirrors identical drives. Note: There is no redundancy against data loss in Single, JBOD or RAID 0 modes.
Hard drive sleds are made from ABS plastic and the operating handles are made from aluminum. Installing hard drives is as easy as securing them with screws. Screws for HDD and SSHD are provided in the accessory box.
Main board is located on the back of the device and is very clean cut. I haven’t noticed any over burn or left over flux on the board. PWM fan connection connects directly to the main board. Front panel connects to the main board as via ribbon connector. All of the connectors in D2-310 are secured with hot glue gun.
SATA daughter board connects to the main board and also is very neat. There is no solder or left over flux anywhere that can be seen.
Front notification panel has a reset button and 6 LEDs. One for power/status light and the rest for hard drive activity notification. Since D2-310 is a two bay unit only two led lights are used to display status/access of the drives. Here I saw the same melted hot glue on the connectors.
USB 3.1 controller in D2-310 is by ASMedia (ASM1352R). ASM1352R is single chip solution for USB 3.1 and RAID. As I have mentioned the supported RAID configurations are RAID 0, RAID 1, JBOD.
Serial Flash Memory is provided by TROLINK (Pm25LQ512). This chip offers serial interface to SATA devices.
Power amplification is done by Texas Instruments (LM358). This is a dual channel power multiplier that supports up to 32 volts per channel.
Signal switching is done by ASMedia (ASM1542). This chip supports switching up to 10Gbps.