for my new WD20EADS 00R6B0 (2TB green) h2benchw shows an access time of 20.7ms. The test result on this page (http://www.tomshardware.co.uk/2tb-hdd-caviar,review-315...) show an access time of 13.2ms. The drive passes all tests and is working without any problem, but WD specifies a search time of 8.9ms. After adding the average rotational latency at 5400 RPM (5.6ms) I would expect a result around 14.5ms for the access time.
Did anybody else get similar deviations of the specified value? I don't mind a difference of 1 or 2ms, but 6ms seems too much.
For all other drives in my computer I get plausible results, for another drive connected to the same controller e.g. I get an access time of 6.3ms using h2benchw. I didn't change any AAM settings.
My concern is not speed, but now I fear that something undetectable by the normal diagnostics is wrong with my drive. If the drive was specified with a seek time of about 14ms everything would be OK for me.
WD support points me to several published benchmark results, but apparently either they tested a different drive revision or my drive is defective.