Participating Hard Disk Drives
Of course, 400 gigabytes is less than half of the maximum storage capacity available today as every manufacturer already offers 1-terabyte disks. However, 400GB drives from older series are still available in shops at a rather modest price. If you don’t need a huge storage space, but want to have a secure or faster disk subsystem, why not use them?
As you can see, six out of the seven disks only differ in specified response time (which is actually not a precise parameter but depends on the HDD’s firmware and the measurement method) and have the same amount of cache memory and the same number of operating surfaces. Well, this makes our tests the more interesting. You’ll see as many as three HDDs from Samsung, two of which differ in the amount of cache memory and the third is a newer model. Western Digital’s drives are exciting, too. Both belong to the server-oriented Caviar RE2 series but the WD4000ABYS was released later and thus has newer firmware.