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Written by Olin Coles   
Tuesday, 28 July 2009
Table of Contents: Page Index
WD VelociRaptor 300GB SATA HDD WD3000HLFS
WD VelociRaptor Features
WD3000HLFS Specifications
Closer Look: WD VelociRaptor
Drive Testing Methodology
Random Access Time Benchmark
Basic IO Bandwidth
Random Access IOPS Tests
I/O Response Time
Linear Bandwidth Speed
Sequential Performance Tests
Buffered Transaction Speed
Storage Media Final Thoughts
WD VelociRaptor HDD Conclusion

Iometer IOPS Performance

Iometer is an I/O subsystem measurement and characterization tool for single and clustered systems. Iometer does for a computer's I/O subsystem what a dynamometer does for an engine: it measures performance under a controlled load. Iometer was originally developed by the Intel Corporation and formerly known as "Galileo". Intel has discontinued work on Iometer, and has gifted it to the Open Source Development Lab (OSDL).

Iometer is both a workload generator (that is, it performs I/O operations in order to stress the system) and a measurement tool (that is, it examines and records the performance of its I/O operations and their impact on the system). It can be configured to emulate the disk or network I/O load of any program or benchmark, or can be used to generate entirely synthetic I/O loads. It can generate and measure loads on single or multiple (networked) systems.

Benchmark Reviews has resisted publishing Iometer results because there are hundreds of different configuration variables available, making it impossible to reproduce our tests without having our Iometer configuration file. To measure random I/O response time as well as total I/O's per second, Iometer is set to use 4KB file size chunks over a 100% random sequential distribution. The tests are given a 50% read and 50% write distribution. Our charts show the Read and Write IOPS performance as well as I/O response time (measured in ms).

Iometer_Random_IOPS_ICH10.png

Iometer was configured to test for 120 seconds, and after five tests the average is displayed in our benchmark results. The first tests included random read and write IOPS performance, where a higher I/O is preferred. In this test the single layer cell OCZ Vertex EX rendered 3106/3091 I/O's and outperformed all other products. A set of RAID-0 Vertex 120GB MLC SSDs performed at 1517/1515, which is just slightly ahead of a single Vertex SSD which renders 1197 for read and write IOPS. Sharing the same architecture and design, the OCZ Agility SSD trails behind the Vertex with 857/858 IO's. The OCZ Summit MLC SSD completed 730/733 IO's, with every other product thereafter performing far beneath the above-listed products and are not suggested for high input/output applications.

While offering better IO than any other desktop hard drive (and most first- and second-generation SSDs), the Western Digital VelociRaptor still fell short on IOPS performance compared with several current-generation SSDs and produced only 134/138 IO's. The Mtron MOBI 3000 performed 107 read and write IOPS, while the Western Digital WD5001AALS rendered 86 and the Seagate 7200.11 completing 77. The Seagate Momentus 5400.6, which is a 5400 RPM notebook hard drive, produced 60/59 IO's. The newer Mtron MOBI 3500 rendered 58 IOPS, which was worse than the older 3000 model. The OCZ Apex struggled to complete 9 IOPS, and its identically-designed G.Skill Titan managed only 8 IOPS. Clearly, the twin RAID-0 JMicron controllers are built for speed and not input/output operations. Next comes the average I/O response time tests...

Iometer_Average_Response_Time.png

The Iometer random IOPS average response time test results were nearly an inverse order of the IOPS performance results. It's no surprise that SLC drives perform I/O processes far better than their MLC versions, but that gap is slowly closing as controller technology improves the differences and enhances cache buffer space. In our Read/Write IOPS performance the SLC OCZ Vertex EX achieves a dramatic lead ahead of the other SSDs tested.

OCZ's Vertex EX offered the fastest read and write response time, measuring 0.26/0.06ms, and showing strength in write requests. The RAID-0 set of Vertex MLC SSD's scored 0.58/0.07ms, dramatically improving the write-to response time over a single Vertex SSD which offered 0.42/0.77ms. The mainstream Agility SSD produced 1.01/0.06ms with write response times actually better than the Vertex's. The OCZ Summit responded to read requests in 0.78ms while write requests were a bit quicker at 0.59ms. The Western Digital VelociRaptor did very well compared against SSD products, producing 6.59/0.82ms. These times were collectively the best available, as each product measured hereafter performed much slower.

The Mtron MOBI 3000 offered a fast 0.42ms read response time, but suffered a slower 8.97ms write response. Both the WD5001AALS and Seagate 7200.11 hard drives performed around 11ms read and 1.2ms write. The Seagate Momentus 5400.6 offered 15.3/1.36ms response times. Mtron's newer MOBI 3500 offered great read response times at 0.19ms, but suffered poor write responses at 17.19ms. The worst was yet to come, as the G.Skill Titan and OCZ Apex offered decent 0.42ms read response times but absolutely unacceptable 127ms write times.

Drive Hardware

In our next section, we test linear read and write bandwidth performance of the WD VelociRaptor and compare its speed against several other top storage products. Benchmark Reviews feels that linear tests are excellent for rating SSDs, however HDDs are put at a disadvantage with these tests whenever capacity is high.



 

Comments 

 
# not satisfiedprasanth 2010-02-16 20:06
speed is good i am happy with it but the storage capacity is not as i expected
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# Not Satisfied eh?Josh 2010-05-01 16:56
you bought a 300gb but expected a 1tb eh?

This review said it all, it's the best HD on the market right now and its price still beats SSD's - but not for long, I'd expect that by the end of 2010 they will be very nearly neck and neck
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# RE: WD VelociRaptor 300GB SATA HDD WD3000HLFSPete 2010-05-10 00:24
Not Satisfied. Strange comment by Prasanth: 300GB gives you 300GB! Surely you did not expect more storage capacity? I have found the drive to be very impressive "in normal use" and a very acceptable alternative to the (presently) too-expensive top of the range SSDs. Josh is spot on!
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# RE: WD VelociRaptor 300GB SATA HDD WD3000HLFSlol? 2010-05-29 22:12
ssd's beat raptors for price vs performance a long time ago lulz.
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# TechEmad 2011-01-30 06:21
This drive should be great but it dies
I installed six of this drive on three servers with two mirrored on each. After one month one of then died. And after six months another one died. Good thing I had them mirrored.
I got the first one replaced and will have to replace the other one.
So be prepared.
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# Re VelociRaptor and SSD'sforwards 2011-10-26 13:38
Well here we are at the end of 2011 and still waiting for that SSD price fall and still paying in excess of the $2.00/GB here in Australia. Also newest SSD failed after four days with bad sectors. Wonder if S.M.A.R.T.Reporter is actually the right tool to monitor SSD's.
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# COOLHungarian 2011-11-07 09:33
I have a WD3000HLFS (bought end of 2008, or 2009, don't remember), and I statisfied. No any problems, the speed is enough, the capacity sufficient for the all day usage.

VIVA WD VelociRaptor :-)
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# RE: WD VelociRaptor 300GB SATA HDD WD3000HLFSjames braselton 2012-07-16 17:17
hi there wii has 512 mb ssd wii u 8.5 gb ssd xbox 360 slime 4 gb ssd ps3 ultra slime 16 gb ssd xbox 720 will be using the 10,000 rpm veloci-raptor 2.5 inch 250 gb hard drive playing halo at 10,000 rpms will be alwsoume if microsoft next gen console woth next gen hard drive then 20,000 rpm veloci-raptor then a laser velociraptor at 50,000 times 20,000 rpms thats 10,000,000 rpms hard drive then a hybride 20,000 rpm hdd/ssd/laser hdd 20,000 rpm hard drive solid state with laser too the veleci-raprtors petabytes per second read write speeds
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