Raid level for NAS/Media server

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NoxRaven

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Jun 26, 2015
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I will in the near future be buying a 4 bay NAS box. I intend to fill it with 4x2TB HDDs. Since I plan on turning this into a storage/media server I am at a loss as to which RAID level to go with. Either 3 or 5. I believe 5 would be better as parity goes across all the drives instead of just one like in RAID 3. Also if any queries were to be made to the box it would be faster again on the 5 as it would only have to go to one disk instead of all of them on a 3.

Any insight or help would be most appreciated.
 
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RealBeast
Use RAID 5, it gives far better performance. RAID 3 is really no longer used as it only worked okay for single large sequential reads, one request at a time, and it is very slow for anything else relative to RAID 5.

In either case (3 or 5) the data is spread over the disks, the real difference is that the parity data is spread over all disks in 5 and on a single disk in 3.
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RealBeast

RealBeast

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Sep 13, 2010
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Use RAID 5, it gives far better performance. RAID 3 is really no longer used as it only worked okay for single large sequential reads, one request at a time, and it is very slow for anything else relative to RAID 5.

In either case (3 or 5) the data is spread over the disks, the real difference is that the parity data is spread over all disks in 5 and on a single disk in 3.
 
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