Slow Access Time WD Caviar GP WD20EADS

Forum Storage : Hard Drives Slow Access Time WD Caviar GP WD20EADS

Hello,

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-31560-6.html) 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.

Any suggestions or similar findings?

Reply to Anonymous

Well, what are your other specs? Could be a bottleneck somewhere in your system... you're not trying to copy files to a slower drive, are you?

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