Examples: Todayís I/O rates

Reading a 1 TB data set

data access speed time [days]

Fast database server 50 MB/s 0.23

Local SCSI/Fast Ethernet 10 MB/s 1.2

T1 0.5 MB/s 23

Typical ëgoodí www 20 KB/s 580

Brute force is not enough ñ we need clever techniques

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