Test du Western Digital Raptor 10000 RPM
Il y a quelques jours, nous vous parlions de la disponbilité officielle ...
Il y a quelques jours, nous vous parlions de la disponbilité officielle fameux Raptor de Western Digital version boîte garantie 5 ans. Disponible en France depuis déjà un bon mois et doté de l'interface Serial ATA, ce disque dur de 36Go coûtant environ 200/250 € TTC intéresse pal mal de personnes. En voici un test, toujours en anglais :
"The change from hard disk drives with 5,400 rpm rotational speed to 7,200 rpm some years ago substantially improved performance. 5,400 rpm disks are these days only used for entry level systems. It’s also apparent that the rotational speed is more significant for disk performance than the much talked about interface. Even an ATA 133 interface that allows for a peak transfer rate of 133 MB/sec is meaningless when most hard disk drives today do not even deliver an average transfer speed of 40 MB/sec. Why then haven’t we seen the next step from 7,200 to 10,000 rpm disks in the many years since the introduction of HDD with 7,200 rotational speed? We know that mechanically such a speed is no problem at all, as SCSI disk drives with platter speeds as high as 15,000 rpm have been available for some time. The reason why ATA equivalents of such drives were not available until now is of a commercial nature: most manufacturers are enjoying a much better profit margin with their high cost SCSI disks. They certainly don’t like the idea of reducing this business by releasing ATA disks with similar performance but lower prices and smaller profit margins. The US manufacturer Western Digital on the other hand is not manufacturing SCSI disks and therefore it makes sense that it is Western Digital which brings now the first 10,000 rpm IDE disk into the market: the WD360GB with the fancy marketing name Raptor."
"The change from hard disk drives with 5,400 rpm rotational speed to 7,200 rpm some years ago substantially improved performance. 5,400 rpm disks are these days only used for entry level systems. It’s also apparent that the rotational speed is more significant for disk performance than the much talked about interface. Even an ATA 133 interface that allows for a peak transfer rate of 133 MB/sec is meaningless when most hard disk drives today do not even deliver an average transfer speed of 40 MB/sec. Why then haven’t we seen the next step from 7,200 to 10,000 rpm disks in the many years since the introduction of HDD with 7,200 rotational speed? We know that mechanically such a speed is no problem at all, as SCSI disk drives with platter speeds as high as 15,000 rpm have been available for some time. The reason why ATA equivalents of such drives were not available until now is of a commercial nature: most manufacturers are enjoying a much better profit margin with their high cost SCSI disks. They certainly don’t like the idea of reducing this business by releasing ATA disks with similar performance but lower prices and smaller profit margins. The US manufacturer Western Digital on the other hand is not manufacturing SCSI disks and therefore it makes sense that it is Western Digital which brings now the first 10,000 rpm IDE disk into the market: the WD360GB with the fancy marketing name Raptor."
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Nil Sanyas
le 19 mai 2003 à 12:27
(9 958
lectures)
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