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Western Digital RE RAID Edition 4TB SATA Enterprise Drive - Full Review

Subject: Storage

IOMeter - Average Transaction Time (rev 1)

Back with the Kingston SSDNow V Series 40GB review, I revised the layout of these graphs to better show SSD latency and access time.  First, I have removed HDD results as they throw the scale too far to tell any meaningful difference in the SSD's you are trying to focus on.  Second, I have reduced the queue depth scale down to 4.  In practical terms of a running OS, queue depth is how many commands are 'stacked up' on the SSD at that time.  An SSD is so fast at servicing requests that typical use will rarely see it increasing past 4.  In the cases where it does, there is so much going on that you are more concerned with IOPS and throughput at that point than transaction time.  The below charts are meant to show how nimble a given SSD is.  Think of it as how well a car handles as opposed to how fast it can go.

Some notes for interpreting results:

  • Times measured at QD=1 can serve as a more 'real' value of seek time.
  • A 'flatter' line means that drive will scale better and ramp up its IOPS when hit with multiple requests simultaneously.

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October 10, 2012 | 11:21 PM - Posted by wujj123456

It's RAID edition review without RAID benchmarks, right? Did I miss something or maybe you are not provided enough drives for RAID testing?

October 28, 2012 | 09:17 PM - Posted by Allyn Malventano

All of these drive tend to scale similarly when in a RAID, depending more on the RAID controller than the drive itself. WD had a very limited number of samples for the new RE.

October 11, 2012 | 10:47 AM - Posted by fourpixel

Me gusta! :3

October 12, 2012 | 09:36 PM - Posted by James (not verified)

To answer the first fellow's question. That is simply the name of the drive not what the review entails. RE is short for Raid Edition.

October 16, 2012 | 02:58 PM - Posted by EVOTiVO

I have always wanted a SSD....Now i want 4 terabyte of hard drive space....

October 29, 2012 | 12:14 PM - Posted by Nerun (not verified)

I am curious, do you think the 2TB and 3TB would perform the same as the 4TB version? Will the lower amount of platters and heads cost some performance to the lower capactiy drives?

What I also wonder about is the new line of specific SAS models. Aou can plug a SATA drive in a SAS controller without any problems, so why the specific SAS line?

Thanks!

January 10, 2013 | 10:46 PM - Posted by Anonymous (not verified)

You can plug a SAS device into a SATA controller but NOT a SATA device into a SAS controller.

September 3, 2013 | 07:00 AM - Posted by Allyn Malventano

You're backwards on that :). Most SAS RAID controllers can handle SATA.

September 5, 2013 | 06:34 AM - Posted by Anonymous (not verified)

In fact, it's exactly the other way around.

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