Sequential Read/Write Speed

Using the latest build of Iometer I ran a 3 minute long 2MB sequential test over the entire span of the drive. The results reported are in average MB/s over the entire test length:

Iometer - 2MB Sequential Read

This chart shows us Western Digital's problem. Prior to the VR200M series, high end current generation 1TB and 2TB drives were faster than the VelociRaptor. While it still had lower access times, the higher platter density of these newer TB drives gave them a measurable advantage in sequential write speed.

The new 600GB VelociRaptor restores balance to the force and outpaces the old one by 20%. Newer drives are still behind, but the VR advantage is between 5 - 10%.

Iometer - 2MB Sequential Write

Unlike SSDs, hard drives have fairly symmetrical read/write performance. There are no changes here. Note that in terms of sequential performance, a 5400RPM notebook drive is roughly as fast as the old 150GB Raptor from 2006.

The Contenders & The Test Random Read/Write Speed
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  • Aezay - Tuesday, April 6, 2010 - link

    The model used in this review is the new WD1002FAEX disk, which is the upgrade to the WD1001FALS model. This new drive is considerably faster, even compared to the 2TB Black (WD2001FASS).
    http://gigglehd.com/zbxe/files/attach/images/89985...
  • Imperceptible - Tuesday, April 6, 2010 - link

    Not according to this review: http://pcper.com/article.php?aid=870&type=expe...
  • Belard - Tuesday, April 6, 2010 - link

    Er... either way... that is more up to the user.

    RAID 0 adds several additional points of failure... Considering how fast G2 as it is. G3 with SATA 3.0 would be more exciting thou... :)

    I'd still go with a single drive. That is me.
  • Imperceptible - Wednesday, April 7, 2010 - link

    Replying to the wrong comment? This has nothing to do with RAID. Just simply mentioning that the WD Black 2TB is the fastest single mechanical drive and it would have been nice if it was used in this review. But in the real world, I'd only ever use it as a storage hdd, with an SSD as the main drive.
  • deputc26 - Tuesday, April 6, 2010 - link

    I as thinking the same, 2Tb Black is this drives nearest non-SSD competitor.
  • Romulous - Monday, August 30, 2010 - link

    I concur. The WD2003FYYS is no slouch.
  • vol7ron - Tuesday, April 6, 2010 - link

    First pass:
    there in while -> there in a while

    Also when typing a comment, if you forget the subject, this is the error message:
    "Account creation was unsuccessful. Please correct the errors and try again."

    I think "account creation" is a little misleading. Perhaps a "Please type in a subject" would be okay.
  • DanNeely - Tuesday, April 6, 2010 - link

    I'm a bit confused. If these are using 200GB platters both the 450 and 600GB versions are both 3 platter drives which doesn't really make sense. A 2 platter 400GB model would be a more reasonable step down from the top.
  • vol7ron - Tuesday, April 6, 2010 - link

    Perhaps the 450GB drives, which as Anand has indicated is using 150GB platters, are really using damaged 200GB platters due to the manufacturing anomalies.

    - just a hypothesis that needs testing.

    vol7ron
  • DanNeely - Tuesday, April 6, 2010 - link

    Where does it indicate that the 450 is using a 150GB platter? The table on the first page lists it as a 200GB. The 150 is the prior generation model.

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