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Western Digital Purple Surveillance Storage 4TB HDD Review

By: Chris Ramseyer | HDDs in Storage | Posted: Mar 27, 2014 2:35 am
TweakTown Rating: 92%Manufacturer: Western Digital

Desktop Test System




HD Tach Sequential Performance




Although not designed for desktop use, we still wanted to run a couple of tests to get a better understanding of how AllFrame Technology works. Right at the start, we noticed a difference in the way the drive reads and writes sequential data. Normally with HDDs, we see a curve with the drives performance dropping off significantly as the heads move from the optimal area on the platter.


With the Purple, we see the read performance start to drop off but then increase again. The write speed doesn't drop off like an HDD at all. The write test reminds us of what we see testing SSDs in a degraded state.


AIDA64 64KB Latency



Read Latency 64KB



Write Latency 64KB


The large 64MB buffer keeps the latency steady while reading and writing the span of the drive.

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