Like every other website on the planet, SmallNetBuilder uses cookies. Our cookies track login status, but we only allow admins to log in anyway, so those don't apply to you. Any other cookies you pick up during your visit come from advertisers, which we don't control.
If you continue to use the site, you agree to tolerate our use of cookies. Thank you!

Wi-Fi Router Charts

Click for Wi-Fi Router Charts

Mesh System Charts

Click for Wi-Fi Mesh System Charts

My Cloud Mirror Gen 2
At a glance
ProductWestern Digital My Cloud Mirror Gen 2 (WDBWVZ0040JWT)   [Website]
SummaryTwo-bay Marvell Armada 38X powered home NAS with personal cloud & media serving
Pros• Hassle-free remote access
• DLNA and iTunes servers
• Add-in app support
• Bundled licenses for Smartware Pro backup software
Cons• Rsync backup not supported
• No logging
• iSCSI not supported
• Can't schedule backup to external devices

Typical Price: $0  Buy From Amazon


Disk manufacturers who also make NASes have a price advantage over manufacturers of BYOD products. This is certainly the case for the recently updated My Cloud Mirror Gen 2. The My Cloud Mirror Gen 2 is very similar to the more business-oriented My Cloud EX2 we reviewed in March of 2014. The new Gen 2 has a different processor, a white case and the SOHO My Cloud feature set.

Our review unit was the $310 4 TB model. However, the Gen 2 also is available in a $370 6 TB version (2 X 3 TB) and a $410 8 TB version (2 X 4 TB). Each of the models arrives preconfigured for RAID 1 (mirrored), so your actual available fault-tolerant storage will be half the stated capacity.

Priced at $310 with two 2 TB drives included, the Gen 2 is cheaper than quite a few BYOD 2 bay NASes. I'll be using the Seagate NAS Pro 2-Bay and NETGEAR ReadyNAS RN202 for comparison throughout the review.

The Seagate NAS Pro 2 bay, like the Gen 2, includes two 2 TB drives in its $340 price. For a BYOD NAS, I chose the NETGEAR ReadyNAS RN202 because, priced at $250, it was the cheapest BYOD NAS that also had a better Total NAS score than the Gen 2. If you add the cost of two WD RED 2 TB drives at ~ $95 each, the total cost for the RN202 with an equivalent amount of storage rises to $440.

The callouts below were taken from the user manual. While WD has a support section with downloads for the Gen 2, the user manual isn't one of the available downloads. We found a link for the manual in the help section of the Gen 2's user interface.

The front panel is very simple - there's just a single power/status LED and a LED for each drive. A combination of red, blue or not lit coupled with various blinking patterns tells you what you need to know.

WD My Cloud Mirror Gen 2 front panel callouts and LED key

WD My Cloud Mirror Gen 2 front panel callouts and LED key

The image below shows the rear panel callouts and LED indicators. The single Gigabit Ethernet port has two status LEDs - one for link speed and one for activity. There is a pin reset, a Kensington security slot and two USB 3.0 ports. There's a small, very quiet fan positioned at the front bottom of the case that moves air across the drives and board. The Gen 2 was rated as very quiet and drew 14 W active and 6 W on standby with the two WD Red 2 TB drives spun down..

WD My Cloud Mirror Gen 2 rear panel callouts and LED key

WD My Cloud Mirror Gen 2 rear panel callouts and LED key


The image below shows the main board with the heatsink in place.

WD My Cloud Mirror Gen 2 main PCB with heat sink

WD My Cloud Mirror Gen 2 main PCB with heat sink

This image below shows the board with the heatsink removed to expose the processor.

WD My Cloud Mirror Gen 2 main PCB without heat sink
WD My Cloud Mirror Gen 2 main PCB without heat sink

This is a completely new board, not the same as the WD My Cloud EX2's. Table 1 below shows the key components for the comparison two bay NASes.

WD My Cloud Mirror Gen 2 Seagate NAS Pro NETGEAR RN202
CPU Marvell ARMADA 38X (88F6820-A0) Dual-Core ARM Cortex-A9 @ 1.33 GHz Intel Atom C2338 (2C/2T Silvermont x86 Cores @ 1.74 GHz) Annapurna Labs 1.4 GHz ARM Cortex A15 Dual Core SoC (AL21200-1400-A0-E-1AN-8-C)
RAM 512 MB Nanya NT5CC128M16FP-DI (x2) 2 GB DDR3 SoDIMM 2 GB DDR3 on board Samsung K4B4G0846D (x4)
Flash 256 MB Hynix H27U2G8F2CTR (x1) 256 MB 64 MB Macronix MX25L512EMI ? Spansion MS01G200HBHI00
Ethernet Marvell 88E1512-NNP2 Gigabit Ethernet Transceiver Intel I211-AT Gigabit Ethernet Controller (x2) Atheros AR8035 (x2)
SATA In Marvell ARMADA 38X processor In CPU (for up to 6 drives) Asmedia ASM1060 6 Gbps SATA controller
USB 3.0 In Marvell ARMADA 38X processor USB 3.0: Asmedia ASM1042A PCIe dual USB 3.0 host controller Etron Tech EJ188H 2 port USB 3.0 Host Controller
Table 1: Key component summary and comparison

The My Cloud Mirror Gen 2 arrives preconfigured for RAID 1. There is no possibility for RAID Expansion. Changing to RAID 0 or JBOD completely deletes all data from the drives.

Support Us!

If you like what we do and want to thank us, just buy something on Amazon. We'll get a small commission on anything you buy. Thanks!

Don't Miss These

  • 1
  • 2