> Nope. Most HDDs today have a single read channel, and they select > which head uses that channel at any point in time. They cannot use > multiple heads at the same time, because the heads to not travel the > same path on their respective surfaces at the same time. There's no > real vertical alignment of the tracks between surfaces, and every > surface has its own embedded position information that is used when > that surface's head is active. There were attempts at multi-actuator > designs with separate servo arms and multiple channels, but > mechanically they're too difficult to manufacture at high yields as I > understood it.
Perhaps a stupid question, but why don't they read from all platters in parallel? Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer med fremmed opprinnelse. I de fleste tilfeller eksisterer adekvate og relevante synonymer på norsk. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
