[mythtv-users] Why RAID 5 stops working in 2009
gull at gull.us
Fri Oct 24 22:11:17 UTC 2008
On Fri, October 24, 2008 1:57 pm, jedi wrote:
> On Fri, Oct 24, 2008 at 01:54:11PM -0700, David Brodbeck wrote:
>> On Fri, October 24, 2008 12:45 pm, Mache Creeger wrote:
>> > Should we just pray that although the statistics say otherwise,
>> > native RAID5 on Linux will not self-destruct when using many large
>> > capacity drives?
>> > Any ideas?
>> Don't use RAID 5. Use RAID 10 instead. See this page for a humorous
>> on why:
> ...I've been thinking not RAID 10 but LVM on top of RAID1.
Sure, that's basically the same thing. RAID 10 just means you're taking a
bunch of RAID 1 mirrored pairs and striping data across them RAID 0 style.
RAID 01 is the opposite; it's taking two identically-sized RAID 0 stripes
and mirroring them. Functionally the two are equivalent, except I think
RAID 10 has some advantages when you have to rebuild.
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