Disk Limit

• Continued advance in capacity (60%/yr) and bandwidth (40%/yr)

• Slow improvement in seek, rotation (8%/yr)

• Time to read whole disk

Year Sequentially Randomly (1 sector/seek)

1990 4 minutes 6 hours

2000 12 minutes 1 week(!)

• 3.5” form factor make sense in 5-7 years?

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