Most of the time technical articles about different RAID levels mostly about how redundant they are, how fast on read/write etc.

But I can't find information about would a disk in a certain RAID live longer than on other RAID level. (ignoring the capacity, speed and redundancy factors)

Especially I am interested in RAID 5 vs RAID 10.

RAID 5 allows us redundancy when one disk fail RAID 10 allows us at least 1 disk fail redundancy.

But if we have two 100% servers (except different raid levels) wit the same data, the same load etc. (again, despite the capacity factor)

so, in which, RAID disks would "live" longer?

for RAID 5, a RAID controller would calculate parity on any write/read, correct? this is penalty.

for RAID 10 it would mirror and stripe

It is all about Hardware RAID if it matters!

  • Simplifying the question. In which RAID (5 or 10) disks are busy more? if they are working in 100% identical environment (the same operations)
    – bakytn
    Feb 15, 2012 at 5:35
  • The consensus these days is that RAID 10 is superior in many regards to RAID 5 in terms of performance, reliability, and cost effectiveness.
    – MDT Guy
    Jan 21, 2014 at 22:36

1 Answer 1


There's almost no evidence that disk activity level has any effect on disk life at all. So it won't matter.

  • Really? Disk durability depends on what, then?
    – bakytn
    Feb 15, 2012 at 16:38
  • 1
    Luck, temperature, and how many hours a day the disk is spinning. (See the Google study, among other sources.) Feb 15, 2012 at 16:54

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