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Results: Robocopy File Transfer

Hands-On With Silicon Motion's New SSD Controller
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File Copy Performance with Microsoft Robocopy

Microsoft's Robocopy, a CLI directory replication command, gradually replaced the older xcopy. It's multi-threaded, has a ton of options, and generally outperforms vanilla Windows copy operations. Best of all, it's built right in to Redmond's operating system. Especially useful for network copy operations and backups, Robocopy doesn't stop to ask you one hundred questions while it copies over your music collection, either.

The reality of benchmarking file copy performance is that you need something fast to move data from and fast hardware to move it to. This is most important with SSDs. It doesn't matter if your drive can write sequentially at 500 MB/s if the source files are hosted on a USB 2.0-attached external hard drive. We're copying our test files from an Intel SSD DC S3700 to the drives in the chart below, taking source speed out of the equation.

There are 9065 files comprising the 16.2 GB payload. Some of the files are huge (up to 2 GB), while others are best described as tiny. On average, that's around 1.8 MB per file. The files are a mix of music, program, pictures, and random file types.

It's fair to say that this chart would look much different if we were copying from a hard drive to a SSD. Even if the disk drive's sequential throughput wasn't a bottleneck, it'd still choke on the smaller files.

Silicon Motion's reference platform doesn't tear the roof off, but it does slot in between the 840 Pro 128 GB and Extreme II 120 GB again.

It's impossible for us to guess just how manufacturers leveraging the SM2246EN controller will fare once derivative drives start appearing. With the speedy Type C Toshiba Toggle-mode flash our prototype uses, performance is on par with most mainstream 256 GB and larger models. If a vendor decides to use three-bit-per-cell NAND, all bets are off. Furthermore, with 64 Gb dies, the little four-channel controller is limited to 256 GB of capacity. A shift to 128 Gb density makes it possible to hit 512 GB. The configuration we have is decidedly the sweet spot, though.

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  • 3 Hide
    rolli59 , August 12, 2013 2:34 AM
    Performance looks good, the question is with a new player on the market if it will affect market price to the benefit of users that have SSD boot/program drives up to 256GB.
  • 2 Hide
    outlw6669 , August 12, 2013 4:57 AM
    Good performance and power numbers.
    Hooray for more competition!
  • 2 Hide
    4745454b , August 12, 2013 6:46 AM
    While performance wasn't the best, it was more then acceptable. And then the power numbers looked great. Overall it's a great start. I'm interested in long term results as some controllers have had bugs in the past that have done bad things to people's data.

    And yes, great to see someone else enter in. While more players means you'll need to look harder at what SSD you are buying, at least we'll have the options. Which is always good, even if the options aren't as good as what you were hoping for.
  • -9 Hide
    shin0bi272 , August 12, 2013 9:39 AM
    Not that this isnt kinda cool but Taiwan is now part of China so its proper to call it China.
  • 3 Hide
    UmeNNis , August 12, 2013 1:06 PM
    Quote:
    Not that this isnt kinda cool but Taiwan is now part of China so its proper to call it China.


    Ummm..... how exactly is "Taiwan now part of China"...?:sarcastic: 
  • 1 Hide
    apache_lives , August 12, 2013 3:11 PM
    But how reliable will it be in the long run...
  • 0 Hide
    mayankleoboy1 , August 12, 2013 10:25 PM
    During the benchmarks, did you ensure that the Samsung EVO is not throttling due to high temps ?
    Maybe add a max temperature graph as well.
  • 0 Hide
    e-z e , August 13, 2013 5:24 PM
    Given time to mature this could be a real contender. Would love to see a follow-up once it hits the market.
  • 0 Hide
    zads , August 19, 2013 2:37 PM
    Quote:
    Meanwhile, SandForce is the opposite. It'll sell you a turnkey solution, but you don't really get many knobs or dials in terms of customization.

    If only this were the case, my job would be so much easier.