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Written by Olin Coles   
Monday, 04 April 2011
Table of Contents: Page Index
OCZ Vertex 3 SandForce SF-2281 SSD
Closer Look: OCZ Vertex 3 SSD
SandForce SF-2281 SSD Controller
Features and Specifications
SSD Testing Methodology
AS-SSD Benchmark
ATTO Disk Benchmark
CrystalDiskMark 3.0 Tests
Iometer IOPS Performance
EVEREST Disk Benchmark
PCMark Vantage HDD Tests
HDD vs Hybrid Drive vs SSD
OCZ Vertex 3 SSD 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). There is currently a new version of Iometer in beta form, which adds several new test dimensions for SSDs.

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.

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 at a queue depth of 32 outstanding I/O's per target. The tests are given a 50% read and 50% write distribution. While this pattern may not match traditional 'server' or 'workstation' profiles, it illustrates a single point of reference relative to our product field.

The chart below illustrates combined random read and write IOPS over a 120-second Iometer test phase, where highest I/O total is preferred:

Iometer_Random_4K-IOPS_30QD_Results.png

In our Iometer tests, which use 32 outstanding I/O's per target and a random 50/50 read/write distribution, SandForce SSDs clearly outperform the competition when tested which a larger queue depth. The PCI-Express based SandForce-driven RevoDrive SSDs lead the pack, followed by their latest SATA 6Gb/s storage solutions. The OCZ Vertex 3 peaks at 57553, and delivers the fastest IOPS performance we've measured on any SATA-based SSD.

In our next section, we test linear read and write bandwidth performance and compare its speed against several other top storage products using EVEREST Disk Benchmark. 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 

 
# Nice reviewcube 2011-04-05 08:52
"confirming the Vertex 3 as the fastest MLC SSD Benchmark Reviews has tested to date"
Pretty good statement. If i was in their ads department i would take this line and add it somewhere in the product page.
As always Olin, excellent review. with each review you provide all the important information needed to understand how these drives work.

I think is probably time to treat myself with an SSD.

Ive been waiting for these prices to come down a bit. But dam, they are persistent. gonna have to call the EU Trade commission to look up into the scheme.

I think there has to be some type of SSD price fixing going on with these companies just like we saw with the LCDs.

"LG Display, Sharp, and Chunghwa Picture Tubes agreed to plead guilty to criminal charges for participating in a liquid crystal display price-fixing conspiracy and pay $585 million in fines, the U.S. Department of Justice announced Wednesday.

Read more: #news.cnet.com/8301-1001_3-10095219-92.html#ixzz1IfIgIv49
"
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# analogyAnthony 2011-04-05 22:25
Nice review, but you've got bandwidth\IOPS analogy reversed. Consider this: if we have to move a few big things we can use high capacity(eg IOPS in your analogy) ship that is not so fast(eg bandwidth) and it would be ok, but if we need move a lot of small things one by one then we'd better get smaller ship with that is fast. SSD's are like smaller ship(actually nowadays they are more like bigger ships with high speed) - they have great IOPS performace, so it can move smaller things faster.
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# RE: OCZ Vertex 3 SandForce SF-2281 SSDAnthony 2011-04-05 22:26
But other than that it's really great review :)
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# RE: OCZ Vertex 3 SandForce SF-2281 SSDBenoit 2011-04-06 01:14
What about scores when it's connected in SATA2 ?
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# RE: RE: OCZ Vertex 3 SandForce SF-2281 SSDOlin Coles 2011-04-06 08:31
This is a SATA 6Gb/s SSD that reaches 555 MB/s, so it wouldn't be helpful to show SATA 3Gb/s scores because they would consume all available bandwidth on the interface.
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# Prove itPhace 2011-04-06 11:39
Many people looking to upgrade an existing SSD still only have SATA II. It would also be helpful to see add-in SATA III cards reviewed with a drive like this.
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# RE: Prove itOlin Coles 2011-04-06 12:10
The results published with this review have already proved the OCZ Vertex 3 SSD reaches 555 MB/s, which is more than the 300 MB/s SATA-II interface can support. There's nothing more to prove.
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# need sata 3GB scoresGeo 2011-04-06 19:45
They really should include SATA 3Gb/s numbers.There are several reasons why its important to people. The vast majority of users dont have 6GBs boards so is it worthwhile to pay the extra for a sata 6GBs drive or just go with cheaper sata 3Gbs SSD.?

Anyway something people need to be aware of is the bigger drives 240GB+ perform very different to 120GB and smaller vertex 3's.

Dont expect to get this performance with a 120GB vertex 3 or 60GB vertex 3. They get much slower with smaller capacity.
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# RE: need sata 3GB scoresOlin Coles 2011-04-06 20:44
Why would anyone buy a SATA 6Gb/s SSD without having support for this interface on their motherboard? That's like buying 2500 MHz DDR3 just to run it at 1333. There are literally a hundred SandForce-driven SSDs better suited to SATA 3Gb/s.
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# Not always saturating the connectionPhace 2011-04-06 21:45
Most normal usage is not full out saturation- it's random reads and random writes. The way the drive functions with both interfaces is notable for it's ability to handle real world usage. One could get the drive and place it in a SATA II setup now and later upgrade the connection for a reasonably decent performance improvement later. In this case, we're measuring how real world usage is found.

That's fine. I found just this sort of benchmark on another site and the results are encouraging. The site shows a number of SATA drives benchmarked both on III and on II.
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# RE: OCZ Vertex 3 SandForce SF-2281 SSDmanup85 2011-07-18 09:55
SUGGESTION.. im confuse now about what i can buy now.. Vertex 3 or Corsair Forces GT series? is already good ssd? and with the same price there is something better?
thanks
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