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Impressions and Expressions of Ijon
June 13th, 2006
12:14 am


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Looking for Hardware Advice

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Date:June 14th, 2006 04:44 am (UTC)

Re: Some pointers

RAID stands for Redundant Array of Inexpensive Drives. Its invention came with the realisation that it is cheaper to buy a bunch of cheap drives and configure then in a redundant way, so that the lost of any one drive won't cause data corruption, than to invest in a single expensive drive that hopefully not fail.

There are many such configurations, usually distinguished numerically. The simplest type is called RAID-1, or mirroring, where everything you write to the disk is duplicated on an identical twin, so that if one of them dies the other contains a live backup. More complex options try to improve on space utilisation (only 50% in the example above), write efficiency, read efficiency etc.

These systems are typically to cumbersome to lug around (although you could build a decent array the size of a cigarette pack using these 1.8" iPod drives :-)), so if you lack backup/storage at home as well, and a mobile solution is what you're after, I guess taking a mobile drive with you and duplicating all the important stuff from the laptop on it is the way to go.
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