New WD2001FASS: writes are awfully slow (10% of the expected performance)

New 2TB WD2001FASS, Windows 7

  

Read performance seems fine, but writes are awful. Takes several hours to format a 50Gb partition.

HDTune file benchmark shows less than 10 Mb/sec for writes. Screen shot is here (blue are reads, orange are writes):

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 I expect performance as measured here:  http://bit.ly/dCLIbH and here  http://bit.ly/b1KNGb 

Also, WD’s spec ( http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-701276.pdf) says 138 Mb/sec.

Windows driver configuration for the hd has checkmark next to “enable write caching for the device”.

I didn’t touch any jumpers. 

Is there anything I can try (jumpers, firmware update) ? Any help is greatly appreciated!

Maybe you should try contacting WD’s Technical Support about this. You can do so either by phone or email.

To Contact WD for Technical Support
http://support.wdc.com/contact/index.asp?lang=en