AnandTech Storage Bench - Heavy

While The Destroyer focuses on sustained and worst-case performance by hammering the drive with nearly 1TB worth of writes, the Heavy trace provides a more typical enthusiast and power user workload. By writing less to the drive, the Heavy trace doesn't drive the SSD into steady-state and thus the trace gives us a good idea of peak performance combined with some basic garbage collection routines.

AnandTech Storage Bench - Heavy
Workload Description Applications Used
Photo Editing Import images, edit, export Adobe Photoshop
Gaming Pllay games, load levels Starcraft II, World of Warcraft
Content Creation HTML editing Dreamweaver
General Productivity Browse the web, manage local email, document creation, application install, virus/malware scan Chrome, IE10, Outlook, Windows 8, AxCrypt, uTorrent, AdAware
Application Development Compile Chromium Visual Studio 2008

The Heavy trace drops virtualization from the equation and goes a bit lighter on photo editing and gaming, making it more relevant to the majority of end-users.

AnandTech Storage Bench - Heavy - Specs
Reads 2.17 million
Writes 1.78 million
Total IO Operations 3.99 million
Total GB Read 48.63 GB
Total GB Written 106.32 GB
Average Queue Depth ~4.6
Focus Peak IO, basic GC routines

The Heavy trace is actually more write-centric than The Destroyer is. A part of that is explained by the lack of virtualization because operating systems tend to be read-intensive, be that a local or virtual system. The total number of IOs is less than 10% of The Destroyer's IOs, so the Heavy trace is much easier for the drive and doesn't even overwrite the drive once.

AnandTech Storage Bench - Heavy - IO Breakdown
IO Size <4KB 4KB 8KB 16KB 32KB 64KB 128KB
% of Total 7.8% 29.2% 3.5% 10.3% 10.8% 4.1% 21.7%

The Heavy trace has more focus on 16KB and 32KB IO sizes, but more than half of the IOs are still either 4KB or 128KB. About 43% of the IOs are sequential with the rest being slightly more full random than pseudo-random.

AnandTech Storage Bench - Heavy - QD Breakdown
Queue Depth 1 2 3 4-5 6-10 11-20 21-32 >32
% of Total 63.5% 10.4% 5.1% 5.0% 6.4% 6.0% 3.2% 0.3%

In terms of queue depths the Heavy trace is even more focused on very low queue depths with three fourths happening at queue depth of one or two. 

I'm reporting the same performance metrics as in The Destroyer benchmark, but I'm running the drive in both empty and full states. Some manufacturers tend to focus intensively on peak performance on an empty drive, but in reality the drive will always contain some data. Testing the drive in full state gives us valuable information whether the drive loses performance once it's filled with data.

AnandTech Storage Bench - Heavy (Data Rate)

It sure seems like Samsung is the only manufacturer that has figured out a secret recipe to boost throughput with SATA 6Gbps because all the other drives are hitting a wall at ~290MB/s. 

AnandTech Storage Bench - Heavy (Latency)

In terms of latency the difference between all drives is much more marginal. The Vector 180 has a small advantage over the Extreme Pro at larger capacities, although once again the 850 Pro tops the charts.

AnandTech Storage Bench - Heavy (Latency)

The Vector 180 is also very consistent with only a small number of >10ms IOs. Oddly enough, the 240GB does better when it's full, although I think that might be just an anomaly since it practically makes no sense at all.

AnandTech Storage Bench - Heavy (Power)

Similar to what we saw in The Destroyer benchmark, the 240GB and 480GB Vector 180 has wonderful load power characteristics and the difference to other drives is actually fairly significant.

AnandTech Storage Bench - The Destroyer AnandTech Storage Bench - Light
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  • zodiacsoulmate - Tuesday, March 24, 2015 - link

    PFM is so much needed for ocz drives... almost all my dead vector drives are because of sudden power loss... Reply
  • ocztosh - Tuesday, March 24, 2015 - link

    As this is my first post on this article please allow me to identify myself as an OCZ representative.

    Hi Zodiacsoulmate thank you for your comment. We do feel like PFM+ helps add more protection for power users and ultimately it was our goal with this drive to create a product that delivered both high performance and enhanced reliability by leveraging some of the features from our enterprise drives.

    Thank you for your business and we are sorry that you have had issues with any of our drives in the past and in regards to the very first Vector drives we have released a firmware update that addresses sudden power loss issues. If you currently are experiencing any issues please do not hesitate to contact our support team and we will be happy to support you.

    Over the last two years we have made significant upgrades in our products and processes to impact quality and continue to make investments in this area. All of our drives leverage premium Toshiba NAND and that complete access to next generation flash is enabling us to develop some very exciting new solutions that are both focused on enhancing performance and driving down cost.
    Reply
  • zodiacsoulmate - Tuesday, March 24, 2015 - link

    wow cool man, yea quite some vectors died but the 5 year warranty got them all replace, one 256gb died so many times that OCZ replaced it with a vector150 which is running strong since then... Reply
  • ocztosh - Tuesday, March 24, 2015 - link

    Hi Zodiacsoultmate. Thanks very much for the feedback and glad to hear that your Vector 150 has been running great. Again sorry that you had issues with the original Vector and thank you very much for your business. We have made significant changes and improvements to both products and processes and will continue to moving forward. Thanks for sticking with us. Reply
  • Spoogie - Tuesday, March 24, 2015 - link

    Glad to see you're watching.

    I've had two failed OCZ drives, one DOA and the replacement 8 months later. The packaged replacement (unopened) was sold on eBay out of fear, at which point OCZ was sworn off.

    I believe in redemption, and I'll be watching the consumer feedback. Good luck.
    Reply
  • ocztosh - Tuesday, March 24, 2015 - link

    Hi Spoogie. Thank you for your comments and your business. I am sorry to hear that you had issues in the past. I know it is easy to say but we are a completely different company/organization today as part of the Toshiba Group. We certainly realize we need to continue to work diligently to support our customers and appreciate the feedback and open dialogue. Reply
  • Oxford Guy - Wednesday, March 25, 2015 - link

    I had two expensive (at the time) Vertex 2 drives. One bricked after about two weeks. The RMA drive bricked immediately when updating the firmware. I have the replacement drive but I don't trust it enough to use it. The other drive I bought worked through several firmware updates (a few months) but bricked after I put my second Macbook Pro to sleep. I was busy with graduate school and a job and didn't have a chance to update my backup and part of the next day's final presentation for a course and also some important poetry. I had been lulled into a false sense of security because the drive had operated with no trouble for several months.

    When Anandtech wrote about how OCZ started selling Vertex 2 drives with half the NAND chips in them, without changing the specs, it didn't say anything about reduced reliability. However, from my experience and from what I've seen from comments on the Net (such as Amazon reviews), the failure rate for these drives was extremely high. Also, when OCZ offered a replacement option for those burned by the bait and switch hidden 32-bit NAND (full chip complement) to 64-bit NAND (half the chips) transition -- it never offered it for the 240 GB model. One of Anandtech's writers also said they didn't experience failures with their Vertex 2 drives but those were most likely all 32-bit NAND drives.

    OCZ never released a utility for dealing with bricked Sandforce drives due to their "panic mode" that would help users get some data recovered. Instead, their forum staff just said "RMA or send to DriveSavers". From what I gathered from my Google searches, the panic mode (which Anandtech's Vertex 2 reviews didn't mention as I recall) was designed to protect Sandforce's flaky firmware from reverse-engineering at the cost of making it extremely difficult (impossible for consumers without spending thousands for DriveSavers) to obtain their data. And, since these drives love to corrupt themselves at the drop of a hat (possibly due to deduplication of critical filesystem data), it's unlikely that most of the panicking is caused by serious problems with the drives like the actual failure of a NAND chip.

    So, it seems like I received a product that not only had a poorly-engineered anti-consumer controller but which also had half the NAND chips and thus the loss of performance, capacity, and apparently also stability. I think these Vertex drives were rated at 1 1/2 stars on Amazon or something similarly low. I also remember reading about a lot of problems with Vertex 3/Agility 3 drives so it seems that the continuing defectiveness of the OCZ/Sandforce combination moved forward past the Vertex 2 era and the first-generation controller.
    Reply
  • Oxford Guy - Wednesday, March 25, 2015 - link

    "it's unlikely that most of the panicking is caused by serious problems with the drives like the actual failure of a NAND chip."

    Although there is also a rumor that part of the failure rate is due to OCZ using its own NAND which may not be as reliable as less generic NAND. Rumors abound but concrete information is hard to come by because the whole mess was brushed under the rug.
    Reply
  • Oxford Guy - Wednesday, March 25, 2015 - link

    I was also the lucky owner of an IBM 75GXP "Deathstar" hard disk so I have an almost supernatural knack for picking the worst possible drives for my data apparently. Like the Vertex 2, the Deathstar was hyped by reviews for being so wonderfully quick — until they started to blow up. Reply
  • AssBall - Wednesday, March 25, 2015 - link

    I had 2 Deathstars and both worked for 4 years. They probably still work. Guess I was lucky. Reply

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