Jonathan Andrews asks: "I remember back in the old days reading about a filesystem/device driver that had alomost no seeks of the physical disk. It worked by scanning the heads of the disk from track 0 to the end then back again in a constant motion. Disk reads and writes where cached so that they got written to disk only when the heads where on that part of the platter. My question is simple, now that disks are IDE, have lots of heads and even worse differing Heads/Cylander/Sector translation scemes is this type of system even possible? Would you have to fight the disk cache on the drive? I seem to recall it giving real throughput advantages, if the cache was large enough to hold 'one sweep times worth of data' then the cache almost never blocked and disk writes/reads sustained at the max throughput all the time. Best of all it gets rid of that blased seeking, chewing, seeking noise!"
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