WD - My Book Duo 16TB 2-Bay RAID External USB-C Desktop Hard Drive - Black

This external hard drive has preformed excellent over the first 30 days of operation.

I got a 2 x 8T to replace my previous one, one drive of which failed, and apparently, had not been mirroring. The price makes it attractive, and WD has a long reputation -- I've used their drives over the years. Here's the thing, if you know about RAID, how it works, what to expect, etc., this could be great solution if you don't want to spend the BIG money. But, be aware, it comes with no software and no manual. So your first task will be to search for those. The user manual on the WD website is OLD (the list of operating system compatibility ends at Window 8 (pre 2015) and Mac OS Mavericks (2013)) and the manual references obsolete WD software to manage your drives (WD SmartWare). So, you are on your own unless you already know what you need to do. So, this might suit you, otherwise, be prepared to educate yourself. BTW, WD support never replied to my support request.

I can not say enough. I bought this drive and am very happy. It performs very well and without issue. The speed is comparable to having the drives internal to my pc. Never have I found that. I get the same speed regardless of the connector or cable I have used. It is roughly 200MB/s. The USB hub feature works great. Just remember to have the main drive recognized before you connect your external drives. The software, everything is top notch. Came with two RED NAS drives with the 256MB cache made in Thailand. It is a newer RAID software so it did not accept a WD RAID built in another WD device. That was not expected.

It's an external hard drive and does what it is supposed too. This is my 3rd one and it works great. The first two where of the older design. The first thing I did was change the configuration to RAID 0 so I have 8TB mirrored instead of 16TB striped. This gives me data protection without having to run a separate data backup process. Data transfer is fast and they have been very reliable. They are on 24X7 and I have not had any issues since purchase a couple years ago.

I bought this to replace a pair of 6TB drives that I had been manually keeping synced. Seemed better to have a mirrored drive and more space at the same time. Now I have one cable and one power supply. I haven't had this unit long enough to truly rate it. However, this is my 2nd one of these. I bought one a year previously. I use this first one as my media drive. After 10 months it reported that one of the drives had failed. As a mirrored unit, it continued to work with no loss of data. But I had no clue which drive had failed. The WD Drive Utility would not tell me and WD Support told me it was supposed to, After too much time on the phone with the helpful Support person, he decided I should return the drive. I backed it up, shipped it to WD, and received a "new" refurbished one in return. I give these drives a good rating since I lost no data and WD honored their warranty. I also like that the WD Drive Utility provides so much more information that you can normally get for an external drive on with MacOS.