OCZ RevoDrive X2 PCI-Express SSD E-mail
Reviews - Featured Reviews: Storage
Written by Olin Coles   
Friday, 19 November 2010
Table of Contents: Page Index
OCZ RevoDrive X2 PCI-Express SSD
Closer Look: OCZ RevoDrive X2 SSD
SandForce PCI-E SSD Anatomy
Features and Specifications
SSD Testing Methodology
AS-SSD Benchmark
ATTO Disk Benchmark
CrystalDiskMark 3.0 Tests
Iometer IOPS Performance
AIDA64 Disk Benchmark
HDD vs Hybrid Drive vs SSD
OCZ RevoDrive 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.

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

There's no question that OCZ has created the perfect tool for extreme IOPS environments. The OCZ RevoDrive X2 reached 112,061 combined total read and write IOPS in our tests, trailed only by the original RevoDrive with 69925 IOPS. From here on, single SATA SSDs trail far behind.

From the onset, SandForce SSDs clearly outperform the competition when tested which a larger queue depth. In our Iometer tests, which use 32 outstanding I/O's per target and a random 50/50 read/write distribution, only the 'unrestricted' SandForce SSDs approach 50,000 IOPS. OCZ's Agility 2 promises 10,000 IOPS each way, and yet it delivers 23,376 total - outperforming their specification once again. The SandForce-Driven SSDs demonstrate the highest IOPS performance we've ever seen on a consumer storage device, and the 'unlocked' firmware further extends the performance level to as high as 50,000 IOPS. Benchmark Reviews discusses this topic in more detail in our SandForce SF-1200 SSD Firmware Comparison article.

Drive Hardware

In our next section, we test linear read and write bandwidth performance and compare its speed against several other top storage products using AIDA64 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 

 
# ThumperRealNeil 2010-11-19 05:05
This thing really rocks. The 'real world' experience using a computer with one of these things inside of it must be sweet indeed. Can't afford one of them and may never be able to. But it's good to see that they're out there.
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# RE: ThumperServando Silva 2010-11-19 06:28
Any SSD will make you notice a super-boost in real world experience against HDDs. I'm sure you'll not notice a difference between controllers, but I'm not sure if the RevoDrive X2 could make THE difference.
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# RE: OCZ RevoDrive X2 PCI-Express SSDAdam 2010-11-19 07:28
Bloody hell that's fast, you sure as hell pay for it though...

I'm yet to upgrade to any SSD yet unfortunately, still waiting for the technology to move on a bit / become more affordable.
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# C300 in raid or this?aberkae 2010-11-19 09:03
This by far is the best performers on the market.
I'm debating weather to get an extra c300 (256 gig) for raid 0,(total 500gigs >700 mb/sec read/500 rights) extra $525
Vs Revodrive x2 256gig one, extra $699.
(aren't the Sandforce 2500, 2600 controllers out soon as well?)
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# RE: C300 in raid or this?Olin Coles 2010-11-19 12:03
You can expect the next generation of SandForce products in Q1 2011, but not sooner. This particular product, while being extremely fast, lacks TRIM support because of the RAID controller. In my opinion, you shouldn't buy an SSD without TRIM support. In this case however, there recovery time wouldn't be an issue unless you did constant fills.
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# RE: RE: C300 in raid or this?Khaosus 2011-02-21 21:44
Although this is an old post, I felt the need to clarify.
TRIM is not needed for Revodrive X2 due to the garbage collecting algorithms built into SandForce. TRIM is a sloppy patch job on a problem that should of never existed and on any good drive will not be needed.
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# RE: OCZ RevoDrive X2 PCI-Express SSDDaryl Greene 2010-11-19 17:26
WOW! Those things are ridiculously expensive!
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