External Hard Drive Question

Re: External Hard Drive Question

ATA-UDMA 133 will give you a maximum theroetical speed of 133 Mbytes/sec.
SATA can give you a maximum theoretical speed of 150 Mbytes/sec.
Ultra160/320 SCSI can give you a whopping 160/320 MBytes/sec.

USB2.0 works in synchronous transfer mode and has a maximum theoretical speed of 60 Mbytes/sec.

IEEE1394a (aka Firewire, iLink) works in asynchronous transfer mode and has a maximum theoretical speed of 50 Mbytes/sec. However, because of its transfer mechanism and lower packet overhead IEEE1394a will achieve higher throughput than a USB2.0 device.

The newer IEEE1394b works at a theoretical transfer rates of 100 Mbytes/sec.

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