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Question about Raid 5 Setup

V

vaticanslayer

Junior Member
I'm planning to build a 1-2TB media center, and being fairly new to Raid, I have a question:

According to the articles I've been reading, Raid 5 can suffer one disk 'blow out' and still maintain fault tolerance. Does this mean that it can lose one hard drive and not suffer any data loss, all I have to do is put a new hard drive and rebuild the array? Thanks for any answers you can give!
 
pretty much. however, there are situations when you lose more than one drive (because of a power surge, for instance), and then you'll need to rely on your backups.
 
Thank you for your response oog! I will have a pretty decent UPS to go along with it so I should be fairly well off. The redundancy factor is what I really needed to know, thanks again!
 
Yes, if one hard drive fails, the array is still functional, albeit at a significant performance loss. The reason for the performance loss is that it is calculating the missing information, and requires more time to do so. But it is perfectly functional. Also, keep in mind that while that one failed drive is our, the array is no longer fault tolerant.
 
If you're planning a 3 drive config, why not go 4 and make the 4th auto fail over drive. meaning once fault is detected, it automatically drops the broken drive and use the 4th for rebuilding w/o you touching it..
 
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