Product Comparison: Western Digital EX4100 vs Western Digital PR4100

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General Specifications
Western Digital
Western Digital
About the Product
Powerful Marvell ARMADA 388 1.6 GHz dual-core processor and 2 GB DDR3 memory gives you ultra-fast transfer speeds of 115 MB/s upload and 107 MB/s download for high-performance media streaming and file transfers.
With a 1.6GHz quad-core Intel Pentium N3710 processor, 4GB of DDR3L RAM, and built-in video transcoding, you get a multi-purpose media server with the power to stream in HD, capacity to store all your raw files and sharing capabilities to collaborate with ease.
Key Specs
Hard Drive Capacity
16 TB
16 TB
Number Of Slots
4 -bay
4 -bay
Storage Drive Type
3.5”, SATA 3Gb/s, SATA 6Gb/s
3.5”, SATA 3Gb/s, SATA 6Gb/s
What customers say about "Key Specs"
Western Digital EX4100 16TB 4-Bay Network Attached Storage
  • Selecting the 16TB NAS (4 x 4TB drives). Good capacity.
  • Running for 3 years with no issues! Nice size of storage.
  • Plenty of slots. I have started with all 4 drives and configured. That’s on me.
  • Great capacity and speed. This NAS is a beast.
  • Product is well made and setup was effortless, good storage size, great memory.
Western Digital PR4100 Professional Series 4-Bay 16TB Network Attached Storage
  • Drives have worked without complaint so far this past 6 months.
  • I use 4x8TB WD Red drives. Great capacity.
  • I got my NAS with (4) 8TB Western Digital REDS Drives and use it for my PLEX Server. Would recommend.
  • Works great to copy external drives of any capacity without tying up resources on my laptop.
  • The device itself, the drives, local area connection, speed, storage, all fine.
Size & Weight
9.13 in.
9.13 in.
6.69 in.
6.69 in.
7.56 in.
7.56 in.
13.51 lbs.
13.6 lbs.
Marvell ARMADA 388
Intel Pentium N3710
2 GB
4 GB
RAID Support
RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, JBOD, Single
Access From Anywhere, Robust Data Protection, Simplified file and folder sharing, Up And Running In Minutes, Auto Backup, Volume Encryption, Multiple RAID options
Storage to organise everything, Edit and save from anywhere, Stream anything, Data protection your way, Adobe Creative Cloud Connected, Simple to setup, easy to use
Included Software
abFiles, Acronis, aMule, Anti-Virus Essentials, Dropbox, ElephantDrive, FortressSecure, GoodSync, Icecast, Joomla!, phpBB, phpMyAdmin, Plex Media Server, QuikFynd, SqueezeCenter, Transmission, WordPress, Z-Wave
Apple Time Machine, Dropbox, DLNA Media Server, Joomla!, phpMyAdmin, WordPress, Acronis, phpBB, SqueezeCenter, Z-Wave, QuikFynd
What customers say about "Features"
Western Digital EX4100 16TB 4-Bay Network Attached Storage
  • Many RAID modes available including JBOD (Just a bunch of drives) for the most storage space. Good feature.
  • Great NAS with RAID options. I like this.
  • I was able to change RAID configuration very easily and the system chugs along in the background without any problems.
  • The setup of the device was fast and simple. Great features of this one.
  • The product has an intermittent issue (that I believe is related to the Drive Sleep function) which causes it to freeze.
Western Digital PR4100 Professional Series 4-Bay 16TB Network Attached Storage
  • Configured as Raid 5 – once the disk system builds it is very fast.
  • The unit was populated with 3 4TB drives and set up as Raid 5. Setup was straight forward and easy.
  • I put it all together, I put it in RAID 10. Plex server is up and running like a charm!
  • This is professional grade NAS, 4 disk drive, it supports RAID 0, 1, 5, 10, JBOD and spanning configurations.
  • With a Raid 1 set up, there is little risk that I will loose all the data.
LAN Speed
1000 Mbps
1000 Mbps
Number of LAN
Number of USB
What customers say about "Interfaces"
Western Digital EX4100 16TB 4-Bay Network Attached Storage
  • This is very fast with just Red drives. Good LAN ports.
  • The setup is easy, and it is screaming fast and quiet.
  • Easy to set up, certainly plenty fast for a home network, quiet and unobtrusive.
  • It runs nice and quiet and I do enjoy the LED display to let you know the status of the unit. Great speed.
  • Really fast. Plenty of features. Easy to install and connect.
Western Digital PR4100 Professional Series 4-Bay 16TB Network Attached Storage
  • The USB copy port on the front panel is very convenient and works great to copy external drives of any capacity.
  • Managing the device content within the LAN is fine. It can also be managed via WAN connection using myCloud.
  • The WD app is easy to use, fast, and stable. Great connectivity.
  • If you plug a USB 3.0 Drive in, the NAS locks up and crashes.
  • I thought it was weird that when I opened the box the LAN cable was not there.
Warranty / Certifications
Manufacturer Warranty
3 year(s)
3 year(s)
Other Information
849.99 $
999.99 $

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