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
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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