WD - My Book Duo 4TB External USB 3.0/2.0 Hard Drive - Metallic Silver/Charcoal Gray

In duo mode, I can have two drives backing each other up, and feel very secure that my family photos, important documents and video archives are well cared for, with identical copies on two hard drives. Other WD models are network devices, which you might consider, but know that they can take longer to do a full backup, or you might not have a home/work Ethernet infrastructure. Plus, as a USB device, you can backup on a regular schedule and leave this OFF your network to eliminate the risk of hackers getting all your important files. I like that the hard drives are individually replaceable, should one ever fail. The key drawback is that with USB, you have to be the one to discipline yourself to back up regularly, unless you keep it connected all the time.

I purchased this drive to back up my DJ library. This ended up being a good purchase as it runs quietly and has ample space for me to back up the entire library I also like that the drives can be mirrored so there's always two copies of what's on the drive. I've always had good luck with western digital as they make great products

Returned because i needed the MyCloud version. Other than that no issues. Thanks