[Gluster-users] RECOMMENDED CONFIGURATIONS - DISPERSED VOLUME

[Alastair Neil]

Dmitri the recommendation from redhat is likely because it is recommended
to have the data stripes be a power of two otherwise there is a performance
penalty.

On 31 July 2017 at 14:28, Dmitri Chebotarov <4dimach at gmail.com> wrote:

> Hi
>
> I'm looking for an advise to configure a dispersed volume.
> I have 12 servers and would like to use 10:2 ratio.
>
> Yet RH recommends 8:3 or 8:4 in this case:
>
> https://access.redhat.com/documentation/en-US/Red_Hat_Storage/3.1/html/
> Administration_Guide/chap-Recommended-Configuration_Dispersed.html
>
> My goal is to create 2PT volume, and going with 10:2 vs 8:3/4 saves a few
> bricks. With 10:2 I'll use 312 8TB bricks and with 8:3 it's 396 8TB bricks
> (36 8:3 slices to evenly distribute between all servers/bricks)
>
> As I see it 8:3/4 vs 10:2 gives more data redundancy (3 servers vs 2
> servers can be offline), but is critical with 12 nodes? Nodes are new and
> under warranty, it's unlikely I will lose 3 servers  at the same time (10:2
> goes offline). Or should I follow RH recommended configuration and use
> 8:3/4?
>
> Thank you.
>
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