Gluster users - Feb 2017 - Gluster Disks configuration

Hi,


I have a question regarding disk preparation.

I have 4 nodes, each has 24 SSD, i would like to know whats the best practice to
setup the disks.

The pool will be used as a vmware datastore.

im planning on using each disk as a brick without lvm, pool will be distributed
replicas with sharding enabled, do you have any comments on this setup ? because
i dont know if i should use all disks as one big disk with RAID and disable
sharding, or use each disk as a brick with sharding enabled.


also, Redhat website stated that i have to use LVM, but i couldn't get an
answer on why i should use LVM or why i should't.

"You should not create Red Hat Storage volume bricks using raw disks.
Bricks must be created on thin-provisioned Logical Volumes (LVs)"

https://access.redhat.com/articles/1273933



Thank you.

--

Respectfully
Mahdi A. Mahdi

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AFAIK, LVM is needed only if you use snapshots. Other then that, you
do not need it.
You can use RAID if you don't mind extra lost space.
You can test both configs and then choose the right one for your workload.


On Sat, Feb 18, 2017 at 10:03 PM, Mahdi Adnan <mahdi.adnan at outlook.com>
wrote:
> Hi,
>
>
> I have a question regarding disk preparation.
>
> I have 4 nodes, each has 24 SSD, i would like to know whats the best
> practice to setup the disks.
>
> The pool will be used as a vmware datastore.
>
> im planning on using each disk as a brick without lvm, pool will be
> distributed replicas with sharding enabled, do you have any comments on
this
> setup ? because i dont know if i should use all disks as one big disk with
> RAID and disable sharding, or use each disk as a brick with sharding
> enabled.
>
>
> also, Redhat website stated that i have to use LVM, but i couldn't get
an
> answer on why i should use LVM or why i should't.
>
> "You should not create Red Hat Storage volume bricks using raw disks.
Bricks
> must be created on thin-provisioned Logical Volumes (LVs)"
>
> https://access.redhat.com/articles/1273933
>
>
>
> Thank you.
>
>
> --
>
> Respectfully
> Mahdi A. Mahdi
>
>
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> Gluster-users at gluster.org
> http://lists.gluster.org/mailman/listinfo/gluster-users