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Raid 1 = mirroring of two disks. So two 160gb disks makes one failsafe 160gb dist. Slower (little) diskaccess time since it have to do it all twice and check for errors. But one disk can fail, and you still have all your data
Raid 0 = striping of two disks, making one big disk out of one. So two 160gb diske become 320gb. Fast diskaccess since its spanned data placement. One disk fails, all data is lost
Raid 0 + 1 = Combination, where you use 4 disks, and first make two separat diskset where you mirror two disks, then span the two sets. That way four 160gb disks, make one large 320gb disk. Benefit is fast acces, and one disk on each set can die before you have dataloss.
Raid 5 = parity, you dont want that as a consumer
1 - buy good disks
2 - buy a good raidcontroler (adaptec)
3 - make sure its installed correct (get proff. help, not your sisters friend that once had his own C64)
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