The G-Dock Ev blends USB 3.0 and Thunderbolt technologies together to offer a fast and flexible storage option. It comes with two TB G-Drive Ev units that can double as standalone USB 3.0 portable drives.
You can also set up the G-Dock's storage using RAID 1 or RAID 0 and make it work just like any other two-bay Thunderbolt device, such as the G-RAID that came out last year.
The G-Dock Ev offered very good performance in my testing, enough to justify the current price, which fluctuates between $420 to $730 (2TB included). You can also get the 1TB G-Drive Ev by itself for $130. If you're working in an environment where you need to collect or share data between multiple computers and not all of them support Thunderbolt, the G-Dock Ev makes an excellent choice. Those with just Thunderbolt or USB 3.0 should also consider these two, respectively, for their rugged build and fast performance.
Modular design for great flexibility
Announced back in April, the G-Dock Ev is part of G-Technology's Evolution Series of storage devices. This is G-Tech's first approach to the modular design for storage, very similar to Seagate's Universal Storage Module (USM) slot, which works with the Backup Plus portable drive. The G-Dock Ev comes with two G-Drive Ev units included, each being a USB portable storage device by itself.
Apart from the Micro-USB 3.0 port, the G-Drive Ev also has a SATA port so it can be used with the G-Dock Ev as its internal storage. You can easily insert the G-Drive Ev into the G-Dock Ev via the docking station's front-facing drive bays. This design allows the G-Drive Ev to quickly transform from a standalone portable drive into a full-speed SATA 3 (6Gbps) internal drive. The G-Dock Ev connects to a computer using a Thunderbolt connection, which caps at 10Gbps, double the speed cap of USB 3.0.
In other words, when you get the G-Dock Ev, you get a docking station and two separate storage modules. You can use these modules as standalone USB 3.0 portable drives, or use them inside the G-Dock Ev as Thunderbolt storage. In the latter case, you have two options.
Multiple usage options, but no support for regular internal drives
The first option is to use the two G-Drive Ev modules as two separate volumes. This allows great flexibility because you can pull either of them out at any time to use with other computers as USB portable drives. Each drive bay has a button that protrudes out when the G-Drive Ev is inserted, so you just need to push the button to eject it.
This works best in situations where you need to quickly share or collect data between multiple computers. However, the speed of the storage system is now capped by the speed of the individual drive itself, and there's no data protection in case the G-Drive Ev fails, though you can get more G-Drive Ev units for backups.
For real-time data protection or faster performance, you need to use the drives in either RAID 1 or RAID 0, respectively. In this case the G-Dock Ev works just like any other dual-bay Thunderbolt drive. You now can't take out the G-Drive Ev anymore since that will break the RAID setup, especially in RAID 0. In this usage, I find that the G-Dock Ev's drive bay design is a little flawed: the drive bay's eject buttons can be pushed too easily and there's no locking mechanism to prevent accidental drive ejection.
The second minor shortcoming is the fact that the G-Dock Ev doesn't support regular internal drives. And this means its storage, for now, is capped at 2TB. If the device supported standard 2.5-inch hard drives, it could easily increase its storage space to up to 4TB or even more in the near future.
Compact, rugged, and easy to use
Both the G-Dock Ev docking station and the G-Drive Ev module are quite compact. Both have G-Technology's signature aluminum casing with shiny white finish. The devices are very rugged and feel solid in the hand.
The G-Dock Ev has two Thunderbolt ports on the back, which is standard for most desktop Thunderbolt storage devices. The second port is for connecting to another Thunderbolt device in a daisy-chain setup. You can link up to six devices together to one host computer. There's a power button on the back; in my testing, unlike other Thunderbolt devices that share their power status with the host computer, the G-Dock Ev requires you to turn it on or off manually.
The G-Drive Ev has one white status light on the front that flashes white when there's data activity. Out of the box, both drives are formatted in HFS+ and work immediately when plugged into a Mac via the included USB 3.0 cable. You can also use it with a Windows computer once it's reformatted into NTFS.