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The dance of the disk drive interfaces

Most of the disk drive vendors are reluctant to discuss the technical differences between Fibre Channel (FC), SATA, SAS and FATA interfaces. Here's the lowdown...

Device Duty Cycle MBTF (typical) Seek time
Cable distance
SAS / FC 24hrs/7 days 1,200,000 hrs 3.6 msec
6 m external
SATA (7200 RPM) 8hrs/5 days 600,000 hrs 9 msec 1 m internal single port
FATA (7200 RPM) 24hrs/7 days 1,000,000 hrs >9 msec 1 m internal single port

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