Western Digital

WD 8 TB My Cloud EX4100 Expert Series 4-Bay Network Attached Storage

Name: WD 8 TB My Cloud EX4100 Expert Series 4-Bay Network Attached Storage
Brand: Western Digital
SKU: B00SYL12HW

Status: WD 8 TB My Cloud EX4100 Expert Series 4-Bay…: Unavailable on Amazon as of 2026-10-18 10:27 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The WD 8 TB My Cloud EX4100 Expert Series 4-Bay Network Attached Storage: 4-bay expandable NAS ships with 8 TB, room for RAID 5/10 redundancy; main trade-off: 1.6 GHz ARM chip cannot transcode heavy 4K Plex streams in real time.

Unavailable on Amazon as of 2026-10-18 10:27 UTC

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By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-18

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. About the author →

Pros & Cons

Pros

✓ 4-bay expandable NAS ships with 8 TB, room for RAID 5/10 redundancy
✓ Marvell ARMADA 388 1.6 GHz dual-core CPU with 2 GB DDR3
✓ Rated 114 MB/s upload, 108 MB/s download over gigabit Ethernet
✓ Bundled Plex Media Server streams to PC, phone, or game console
✓ Remote access via My Cloud mobile app or MyCloud.com, no VPN setup

Cons

✗ 1.6 GHz ARM chip cannot transcode heavy 4K Plex streams in real time
✗ 2 GB DDR3 is fixed; no headroom for many Docker or VM workloads
✗ Expert Series pricing is steep next to DIY 4-bay builds
✗ RAID rebuilds on multi-TB drives take many hours of degraded speed

Manufacturer description

Product Description 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. Set Contains: NAS Ethernet Cable Power supply and cable Quick install guide

SpecPicks Verdict

SpecPicks scored WD 8 TB My Cloud EX4100 Expert Series 4-Bay Network Attached Storage using a rating × review-volume × price-fit model applied to published specs and reviews across the PC & gaming hardware category. Western Digital's PC & gaming hardware lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for PC & gaming hardware of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

Faster speed, better streaming Powerful marvell ARMADA 388 1.6 GHs dual-core processor and 2 GB DDR3 memory for ultra-fast transfer speeds of 114 MB/s upload and 108 MB/s download for media streaming
Access from anywhere Save, access and stream your content anywhere you have an internet connection with the My Cloud mobile app or MyCloud.com web access
Robust data protection Multiple RAID and backup options to help protect all your valuable media, photos and important files
Centralise, organise and stream with plex; the plex media server keeps all your photos, videos and music organised and prepared for streaming to your PC, mobile device, game console, or other certified media player; enrich your media with plot summaries, posters, album covers and enjoy it from home or on the go

Full Specifications

RAM	2 GB
ASIN	B00SYL12HW
Size	8 TB
Brand	Western Digital
Color	Black
Series	WDBWZE0080KBK MY Cloud EX4100
Voltage	19 Volts
Language	English, English, English, English, English
Department	Default Category
Hard Drive	8000 GB Mechanical Hard Disk
Item Weight	4.77 Kilograms
Manufacturer	Western Digital
Model Number	WDBWZE0080KBK-EESN
Flash Memory Size	8 GB
Item model number	WDBWZE0080KBK-EESN
Compatible Devices	Desktop
Product Dimensions	9.13 x 6.69 x 7.56 inches
Computer Memory Type	DDR3 SDRAM
Date First Available	February 27, 2015
Hard Drive Interface	Raid

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