mikejl29 Offline Upload & Sell: Off
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Live your life by these numbers: 3-2-1. Three copies of your data, two on-site, one off-site.
There are different levels of RAID, easy enough to Google the differences so I won't bother repeating. RAID5 gives you an added layer in one of those copies of your data, because it allows you to combine multiple drives into a much larger volume, but can rebuild itself if one of those drives should fail. For example, a 4-drive RAID5 array made of 2TB drives gives you about 6TB of useable space, and can rebuild itself should any one of those 4 drives fail.
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