[Gluster-users] to RAID or not?

[Matt Robinson]

Hi Gandalf,

Are you using hardware raid or mdadm?
On high quality hardware raid, a 12 disk raid-6 is pretty solid.  With mdadm any raid6 (especially with 12 disks) will be rubbish.

Matt.

> On 4 Jul 2016, at 15:54:44, Gandalf Corvotempesta <gandalf.corvotempesta at gmail.com> wrote:
> 
> No suggestions ?
> 
> Il 14 giu 2016 10:01 AM, "Gandalf Corvotempesta" <gandalf.corvotempesta at gmail.com> ha scritto:
> Let's assume a small cluster made by 3 servers, 12 disks/bricks each.
> This cluster would be expanded to a maximum of 15 servers in near future.
> 
> What do you suggest, a JBOD or a RAID? Which RAID level?
> 
> 15 servers with 12 disks/bricks in JBOD are 180 bricks. Is this an
> acceptable value?
> Multiple raid6 for each servers? In example, RAID-6 with 6 disks and
> another RAID-6 with the other 6 disks. I'll loose 4 disks on each
> servers, performance would be affected and rebuild times would be huge
> (by using 2TB/4TB disks)
> 
> Any suggestions?
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