Hitachi is represented here by two models from the Deskstar T7K250 and 7K160 series. The older of them, the HDT722516DLA380 , is the junior model in the super-short Deskstar T7K250 series which includes only four models with two different capacities (160 and 250GB) and two interfaces (ATA and SATA).
The case of the HDD is typical of Hitachi’s multi-platter drives. The drive doesn’t have any special traits. It is an ordinary “first-wave” SATA-300 device with an 8MB buffer, support for NCQ and delayed start, etc. Being a rather aged product, the HDD is based on two platters of which it uses only three surfaces, though. Thus, the capacity of one platter is about 105GB.
The HDS721616PLA380 model from the Deskstar 7K160 series is quite a different story. It can be noticed with a naked eye:
The HDD case is made as light as possible – it offers room for one platter only. As a matter of fact, it does contain only one platter J. The platter is 160GB large and this capacity is achieved using the good old non-perpendicular recording method.
Depending on the HDD capacity, either one or two surfaces of this platter are employed. Easy to count up, the 7K160 series consists of only four models, too.
The capabilities of the HDD’s electronics are the same as those of the T7K250 series like an 8MB cache and NCQ. Thermal Fly Height Control technology is declared (when the air temperature inside the HDD case changes, it is necessary to correct the aerodynamic properties of the actuator’s tip to maintain the required height of the head above the disk surface).
The specifications of the Hitachi drives are listed in the following table:
Following in alphabetical order, Maxtor goes next.