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Western Digital My Cloud DL4100 SMB NAS Review

By: Chris Ramseyer | Network Storage in IT/Datacenter | Posted: Mar 2, 2015 10:10 pm
TweakTown Rating: 89%Manufacturer: Western Digital

Benchmarks - RAID 5


RAID 5: Block-level striping with parity data distributed across all member disks.



HD Video Playback




HD Video Play - 720p HD stream from Windows Media Player 256kB reads

2HD Video Play - 2x playback

4HD Video Play - 4x playback



HD Video Record




HD Video Record - 720p HD stream, 256kB writes

HD Video Play & Record - 1 playback, 1 record simultaneously

2x HD Video Play & 2x Record - 2 playback, 2 record simultaneously



Content Creation




Photo Album - All reads - wide distribution of sizes

Office Productivity - Reads and writes, 1kB & 4kB reads; Mostly 1kB writes

Content Creation - 95% writes; 1k, 4k & little reads; Writes up to 64kB



File / Directory Transfer




Directory Copy From NAS - 64kB reads

Directory Copy To NAS - Predominantly 64kB writes, wide scattering under 16kB

File Copy From NAS - 4GB file copy, 64kB reads

File Copy To NAS - 64kB writes



Single Client Performance Summary


Reading large sequential files back from the My Cloud DL4100 proved to be effortless task. We consistently pulled over 100 MB/s anytime we read these types of files from the system. On the second chart in the group, we mixed sequential reads and writes and saw a noticeable loss of performance with the mixed workload. Writing an HD video to the system happened at over 90 MB/s, but reading and writing the same data dropped performance to 66.5 MB/s.


The WD My Cloud DL4100 is designed for SMB use and that often equates to users running Microsoft Office files from the system directly. These could be in the form or Word, Powerpoint, Excel and so on. In the single client office productivity test, the DL4100 had a difficult time, turning in a score of just 7.9 MB/s.


The second lowest result in this task came from the Seagate Business Storage server, just 42.5 MB/s, but still way over the performance offered by the DL4100. Our multi-client test uses real Microsoft Office files and we'll get a chance later in this review to see how the low performance in these types of documents affects many users in an office environment.


The directory copy to the NAS also showed performance issues when working with small files. Reading data back from the DL4100 is clearly not an issue though as the system performed very well when data originates from the NAS.

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