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Review: WD My Cloud Mirror (Generation 2)
4.4Overall Score

Price (RRP): $599 (starting price); $599 for 4TB (RAID as 2TB); $749 for 6TB (RAID as 3TB); $899 for 8TB (RAID as 4TB);
Manufacturer: WD

They say that manners make the man, but memory makes the machine, and WD shows that with a new generation of network storage with increased specs to make the idea of a network appliance more useful around the home.

Features and performance

The more data we accumulate, the more risky it gets when we don’t backup. These days, there’s a huge risk because we all have so many digital files that making sure it is protected and backed up is a must have.

Chances are good that you have a hard drive that deals with this, and if you don’t, you know what you need to do.

Even if you do have one, that is, what happens when that fails?

A dead hard drive is always going to be a distinct possibility, even though hard drive technologies are getting better, faster, and stronger, and so doubling up and making sure you’re covered is something worth considering, especially when you have loads of photographic memories, videos you want to keep, songs you’ve bought and encoded, and a plethora of documents that are worth something to you.

So what can you do? Mirror it.


Not a terribly new concept, hard drive mirroring takes a hard drive and does exactly what the name suggests, writing a duplicate of the drive to a secondary drive.

In the world of hard drives and servers, administrators and hardware folk have been playing with numerous hard drives for some time with a concept called “RAID” or “Redundant Array of Independent Disks”. RAID has numerous uses, but the one that generally gets called mirroring is called RAID 1, and it essentially asks one drive to backup things exactly as they are on that drive to a second, thereby making a clone.

This tends to happen in real time, and means that if you write your documents, images, movies, and music files to one drive, the other drive gets the exact same copy, giving you a backup of a backup at the same time.

Not every drive works this way, and most backup drives you’ll come across are single drive solutions, having you back up your data to one drive. Mirrored drives, on the other hand, take care of duplicate backups for you with one move.

When you have as much data as most of us have these days, this sort of backing up can be super important, giving you a form of redundancy in case the worst does happen.

Western Digital has been producing drives for backup for some time, and has spent some time in the trenches building mirroring devices for hardcore techies for some time, but in the My Cloud Mirror, we’re seeing a consumer and small-business friendly edition of the technology.

For this option — the generation two variant for 2015 — WD has provided an external drive shell and installed two network drives inside, with the option of buying either two 2TB drives (total 4TB), two 3TB drives (total 6TB), or two 4TB drives (total 8TB).