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RAID 5 vs RAID 6


The primary difference between RAID 5 and RAID 6 is that a RAID 5 array can continue to function following a single disk failure, but a RAID 6 array can sustain two simultaneous disk failures and still continue to function. RAID 6 arrays are also less prone to errors during the disk rebuilding process.

Which is better RAID 5 or 6?

In general, a RAID 6 configuration offers better data protection and fault tolerance than RAID 5. However, RAID 6 dual parity requires more time to rebuild lost data as it will be using parity data from two different storage drives.

Why is RAID 5 not recommended?

Dell recommends not using RAID 5 for any business-critical data. RAID 5 carries higher risks of encountering an uncorrectable drive error during a rebuild, and therefore does not offer optimal data protection.




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