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I would not be able to comment on how this is because There are no user instructions. A wannanty card and instructions on how to obtain instructions. Annoying. I purchased a product I want the instructions to come with it.
While I think this company might make decent DAS (e.g. USB 3.1) storage, I cannot recommend their NAS units at all.
After every few hundred gigs of disk writes, my NAS would stop letting PCs write to it. Some of the disks were noisy, but I've also been running 100% SSD for years, so I popped the disks out, and scanned them. First, SMART and dmesg (a Linux command with kernel output) showed nothing. I scanned all the disks from other computers, and popped them back in. FYI, you should do this before putting disks in any NAS anyway. The longest and most thorough tests showed no issues.
By this time, I had popped in the TerraMaster-branded 8GB RAM module. I wasn't using all much RAM, but I thought it would possibly fix the problem because of my large RAID 5 array. Nope. I made sure everything was backed up to a USB or my desktop, and prepared the unit for return.
READ THE STORIES ON TERRAMASTER'S FORUMS, and read the other reviews on Amazon and other places for other models. It will scare the $%&* out of you. I honestly thought this was associated with CoolerMaster because of the similarities in both name and logo.
If you absolutely end up buying one of these, I wouldn't put any sensitive data on it (I didn't). I just don't trust this company. Something feels fishy and off with the alpha quality feel of the OS.
Here's hoping that Amazon can practice some quality control with vendors, because anybody can sell anything on here, and there's no guarantee that it won't be third-rate garbage. Nothing felt better than sending this unit back, and I ponied up just a little bit more for a QNAP with 8 bays. If you care about your data, or you care about the time to start from scratch, look elsewhere.
TL;DR - Terramaster's DAS products have great reviews, but I wouldn't buy anything from them with an IP address
Bought the device and it crashed almost every night while the device was transferring data. It crashed hard enough that I had to do a hard reboot. After working with Terramaster they determined the device was bad and sent me a new one. Have had no issues since I got the new one. Was a hassle initially but support was pretty decent.
The UI is poor, but if you know what you are doing, you will never use it. I’m not crazy about using services based in China to run this device and have disabled them. If this is also a problem for you, seek some other appliance.