Quote:

The problem with a lot of these drives, especially the high-capacity ones, is that they actually have two physical hard drives in them operating as one large disk. (The technical term is that they are "striped" together operating as a RAID 0 volume.) What this means is that if one of those drives should fail, you lose access to all your data, regardless of the integrity of the other drive.


Just to restate what Peter said a lot of the 1Tb are 2x500Gb stripped raid 0 so if one drive goes there is no way to recover the data. Though i know on the Western Digigtal 1Tb drive you can reconfig to raid 1 which is mirrored. so you would only have 500Gb of total space but when you copied to the external it would actually be making an identical copy on the second 500 Gb drive.
Jake

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