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Written by Olin Coles   
Friday, 03 April 2009
Table of Contents: Page Index
OCZ Vertex SSD RAID-0 Performance
Features and Specifications
First Look: OCZ Vertex SSD
Vertex SSD Internal Components
SSD Testing Methodology
Random Access Time Benchmark
Basic IOPS Performance
Linear Bandwidth Speed
I/O Response Time
Buffered Transaction Speed
Windows XP Startup Times
The Truth Behind Heat Output
Solid State Drive Final Thoughts
Vertex RAID-0 Conclusion

OCZ Vertex RAID-0 Performance

EDITORS NOTE: This article supplements our OCZ Vertex 120GB SATA SSD OCZSSD2-1VTX120G review.

This might sound like we're bragging, but Benchmark Reviews has been testing Solid State Drive products longer than most consumers have known them to exist. On the other hand, performance enthusiasts have been keeping notes on SSD technology for a while now. SSD products are not mainstream, not yet, but that day isn't very far off anymore. Lower power consumption and heat output are the least impressive benefits of Solid State Drives. The real payoff is in the practically instant response time and high-performance throughput.

OCZ may not have created the Solid State Drive, but they've done more to bring SSD technology mainstream than any other company in the industry. Once SSDs could outperform their HDD counterpart, it was all about price and capacity. Adding up to 64MB of Elpida DRAM to the buffer has permanently solved stuttering problems, making raw performance the last bottleneck. An Indilinx 'Barefoot' internal controller commands the bank of Samsung K9HCG08U1M DRAM modules, allowing a single OCZ Vertex SSD to offer impressive capacity with unmatched performance. But what if we put two Vertex SSDs into a striped RAID-0 array? Benchmark Reviews tests the speed and bandwidth of two OCZSSD2-1VTX120G SSDs against the fastest storage products on the planet in this OCZ Vertex SSD RAID-0 performance article.


Since first making a commercial public debut at the 2007 Consumer Electronics Show, Solid State Drives (SSD's) have been a topic of hot discussion among performance enthusiasts. These nonvolatile flash memory-based drives feature virtually no access time delay and promise a more reliable storage medium with greater performance while operating at a fraction of the power level. Moving into 2008, SSDs became a consumer reality for many performance-minded power users. Now that 2009 has revealed promising industry support for Solid State Drive technology, we should hope that mainstream acceptance moves faster than DDR3 SDRAM has.

Back in November 2007, after experiencing the SuperComputing Conference SC07, finding Solid State Drives on sale anywhere was a real challenge. One year later, and online stores are offering dozens of SSD models at reasonable prices. Solid State Drives are rapidly changing the computing landscape, and many enthusiasts are using SSD technology in their primary systems to help boost performance. Benchmark Reviews has tested nearly all of the products available to the retail market in this sector, and several do well while others fall flat. It used to be that performance was the largest hurdle for mass storage NAND Solid State Drives, followed by stability, and later price.

Solid State Drive products are no longer restricted to bleeding edge hardware enthusiasts or wealthy elitists. Heading into 2009, SSD storage devices were available online for nearly $2 per gigabyte of storage capacity while the most popular performance desktop hard drive hovered just above $1/GB. While most consumers are waiting for that day when SSD costs the same as HDD, they seem to be forgetting how Solid State Drives have already surpassed Hard Disk performance in every other regard. Our collection of SSD reviews is a good starting point for comparing the competition.

According to a Q1 2008 report by the semiconductor market research firm iSuppli, the SSD market will grow at an annualized average of 124 percent during the four-year period from 2008 until 2012. iSuppli now projects SSD sales to increase by an additional 35 percent in 2009 over what it projected last year, 51 percent more in 2010, and 89 percent more in 2011, and continue to show dramatic increases in subsequent years.

Disclaimer: SSD Benchmarks

Benchmark Reviews recently published an article which details Solid State Drive (SSD) Benchmark Performance Testing. The research and discussion that went into producing that article changed the way we now test SSD products. Our previous perceptions of this technology were lost on one particular difference: the wear leveling algorithm that makes data a moving target. Without conclusive linear bandwidth testing or some other method of total-capacity testing, our previous performance results were rough estimates at best.

It's critically important to understand that no software for the Microsoft Windows platform can accurately measure SSD performance in a comparable fashion. Synthetic benchmark tools such as HD Tach and ATTO Disk Benchmark are helpful indicators, but should not be considered the ultimate determining factor. That factor should be measured in actual user experience of real-world applications. Benchmark Reviews includes both bandwidth benchmarks and application speed tests to present a conclusive measurement of product performance.

About the company: OCZ Technologyocz_logo_200px.png

Entering the memory market in August 2000, OCZ Technology was built around the determination to manufacture the best high speed DDR and RDRAM. OCZ was founded by enthusiasts, for enthusiasts, and their commitment to the end-user has not digressed. OCZ Technology has been an innovator in many areas.

We were the first manufacturer to make Dual Channel optimized memory available to the public, which originally took advantage of nVidia's Twinbank or Dual DDR architecture, found in their nForce chipset. We have now taken that technology and tailored it for the Canterwood, and Granite Bay chipset's. OCZ developed and was the first to implement ULN technology, which has been a critical element in the manufacturing process for some time.

We at OCZ diligently work to improve communication with CPU and motherboard chipset manufacturers prior to the release of their products. Only in this manner can we fine-tune the memory's SPD settings, ensuring a synergistic relationship between the memory module, memory controller, and microprocessor. In today's rapidly evolving semiconductor industry, such communication is not simply research, but a necessary component of the manufacturing process.



# MRAnthony 2010-03-18 04:56
I'm always wary of Mbps(bits) and MB(bytes), too many people use them interchangably. The Ads on the same page for this product say "250MB" not bits, so what is the Atto 249 MBps maximum read bandwidth??? bizarre?
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# El Presidente'Marko 2010-11-27 01:09
Anthony, typically Mbps (Megabits) refers to a transfer speed whereas MBs refer to a capacity. Whether ignorant people use them interchangeably or not, using this guideline you should always be able to figure out which it is. :)
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# RE: El Presidente'Olin Coles 2010-11-27 07:51
I'm not exactly clear which side of the argument you're on here, Marko. Read up on the specifications for any SSD product, and you'll see their bandwidth speed represented as MB/s.
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# DKSGDKSG 2012-04-18 00:41
MB when used in advertised capacity is not Megabytes, it's Million Bytes. Bytes or Bits will be denoted by B or b respectively. When the vendor advertise 250MB, it means 250 Million Bytes which is approx to 244.14 Mega Bytes. This 244.14 is RAW Megabytes and have not included partitioning and other possible overhead used in the system which may yield lower capacity than 244.14 Megabytes.

When used on the bandwidth, make sure you fully understand what the bandwidth measures. In different network or cable setup, the bandwidth could be shared and a single device do not usually get that kind of bandwidth on average. On network, typically vendors means Megabytes when they denote MB unless otherwise denoted using fineprints, but the usual price is using Megabits which looks a lot better on paper.
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# RAID-0 Setuptypoknig 2010-05-10 09:52
How exactly did you have your RAID-0 setup during this test? For instance, were you using the Intel Matrix Storage Manager or some other method?
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# Intel ICH10Olin Coles 2010-05-10 15:11
RAID-0 was built using the motherboard's Intel ICH10 controller.
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# Stripe sizeJ Walsh 2010-05-12 08:46
What stripe size was used in the RAID 0 setup and why?
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# 128KB Stripe SizeOlin Coles 2010-05-12 08:49
This articles used a 128KB stripe size, which is the largest the Intel ICH10 controller allows for RAID-0 sets.
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# Benchmarking A Bigger RAID 0 Arraytypoknig 2010-06-08 22:06
Hi, I have been running the same benchmarks you ran on my RAID 0 array which has 3 120GB OCZ Vertex drives compared to the 2 used in this benchmark. My results have not even been close to what I thought I would be getting after reading this review. I have posted some info about my results here:

Maybe you can take a look at my stuff and tell me why my linear read in Everest does not produce a flat line like yours (I realize I used 512MB block size, but the 1MB block size produced identical results), and why my numbers are so much lower when they should be higher. I have also ran the benchmarks without an OS (or any data) on the array at all, and the results are very similar. Any thoughts?
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# Partition alignmentOlin Coles 2010-06-14 19:43
I'm betting that our results are higher because of drive conditioning: partition alignment, diskpart clean all, secure erase, etc. Since TRIM doesn't always pass through to RAID arrays, used drives will produce lower performance results.
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# sanitary erasetypoknig 2010-11-27 21:23
I have had this problem fixed for quite some time now. If you go to the link I provided in my last comment you will see that using sanitary erase did trick for me... so as you said, "drive conditioning" was my problem. To keep my drives as clean as possible I use the "Wipe Free Space" feature of CCleaner. Does the same thing as wiper.exe but it works when drives are in RAID (unlike wiper.exe).
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# flash, not dramscott 2010-12-02 15:43
Samsung K9HCG08U1M-PCB00 is flash memory, not DRAM... this is why we call it an SSD
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# 4-drive RAID 0Remo 2010-12-23 08:42
Mr Coles, do you have any idea how would a 4 SSD in RAID-0 perform? Would you use it as the boot drive in a windows 7 system?
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# RE: 4-drive RAID 0Olin Coles 2010-12-23 08:44
You should look into the OCZ RevoDrive 2 PCI-Express SSDs, which fit four SSDs into RAID-0 on one board. Our review is here:
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# RE: RE: 4-drive RAID 0Remo 2010-12-23 08:57
I definitely will look for it. But, how much gain in performance would you expect when upgrading from a 2-drive raid-0 to a 4-drive raid-0?
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