TERRAMASTER D6-320 External Hard Drive Enclosure - USB 3.2 Gen2 10Gbps Type-C HDD Storage Hot Swappable Plug and Play (Diskless)

Well I had 5 external hard drives hooked up to my server, I ran out of electrical outlets so I wanted something to change that. This was seamless, I shucked all the external drives and popped them in. Connected the USB-C and started up the server. All drives remained the same drive letter and I was back in business. I added some foam on the bottom as the hard drives have quite a bit of vibration when spinning (Enterprise drives) and this reduced the noise to nothing. Transfer speeds/read write are limited to what the drives can read/write and not what the controller/interface can handle. Overall great product, solved my needs, simple to setup, and I have a free bay for later expansion. The hot swappable feature is also very nice to have.

Didn't work with SMART testing. But after firmware update it now fully functions. Refer Terramaster website for program to update for server compatibility.

First of all, the reviews are conflating many different devices. The devices reviewed have notably different firmware and are designed and built differently. So the overall review is not really relevant. You'll have to wade though all reviews to find the ones applicable to the product you're considering. I'm just updating my review. I have been fighting for a few months to get it to work right. Thing is, no mater what, if you happen to transfer big files, or try simultaneous transfers, it will just fail to work properly and the USB control will be reset. The reset takes some time, so forget about any kind of throughput. The kernel messages seem to indicate errors in the processing of NCQ. Trying to disable it or limiting the queue depth is not allowed. I guess the firmware doesn't implement correctly those features. Another update. I have been writing firmware for devices for years. I would be embarrassed and ashamed to unleash a product that poorly done. It is missing key features that would make the product easy and reliable to use. For example, you don't seem to be able to get each disk unique identifier, the WNN. I could go further, but at that point you figured that the device is only half baked. Sure, it will work with a basic workflow and LOTS of hand holding. The heat is not extravagant, but substantial. Al in all a device where they cut so many corners to lower the price, that it is missing its usage target. I would NOT recommend it as a D.A.S.. Or anything else for that matter.

Been running 6 drives for about a year now and no complaints! It will not power off if your PC continues to provide power over USB when shut down, but that's a limitation of some PCs--just putting the detail here to save some folks some trouble or confusion. Check your bios for settings, sometimes they're hidden.

In an effort to consolidate my external HDD management, I finally opted to purchase a proper HDD enclosure. I have a NAS for other uses, but I needed something that was a DAS (Data Attached Storage) for different drives that I would be rotating or didn't need on a network. This enclosure suited my needs. USB-C connectivity to my PC. 6 drive bays. Independent power and connectivity; that part is key. With the other 4-bay style top-loading HDD bays, if you pull one drive, the entire unit disconnects all the drives and you have to wait for Windows to detect what is in the other bays. With this particular enclosure, you can disconnect the drive in Windows, and the other drives remain powered and accessible. That's true hot swappablility. It's also going to let you transfer files as fast as the drives you have in there will let them. I should have gotten this sooner. Can't recommend it enough.