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USB disks

There are lots of times when you need an extra disk and USB connected disks make a lot of sense for most of those occasions. eSATA connections are faster but less common and are really only for long term use. USB disks work for those times when you transfer disks from one machine to another for a backup before an upgrade.

Modern disks can supply a short burst of data at full SATA speed but maintain data transfers at a far lower speed. SATA II disks can hit 300MegaByte per second for the length of their data buffer, perhaps 16MB, then they slow down to 40Mbps or 50MBps. USB runs at 480Megabits per second which is effectively 48MBps. USB is find for the continual long reads common in backups and the file transfers required when replacing a computer.

There are lots of USB devices out there for handling disks, DVD drives, printers, and everything else you might need during an upgrade or when moving software and files from one system to another. What should you look for?

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USB disks

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