[lustre-discuss] 1 MDS and 1 OSS

Amjad Syed amjadcsu at gmail.com
Mon Oct 30 12:04:14 PDT 2017


The vendor has proposed a single MDT  ( 4 * 1.2 TB) in RAID 10
configuration.
The OST will be RAID 6  and proposed are 2 OST.


On Mon, Oct 30, 2017 at 7:55 PM, Ben Evans <bevans at cray.com> wrote:

> How many OST's are behind that OSS?  How many MDT's behind the MDS?
>
> From: lustre-discuss <lustre-discuss-bounces at lists.lustre.org> on behalf
> of Brian Andrus <toomuchit at gmail.com>
> Date: Monday, October 30, 2017 at 12:24 PM
> To: "lustre-discuss at lists.lustre.org" <lustre-discuss at lists.lustre.org>
> Subject: Re: [lustre-discuss] 1 MDS and 1 OSS
>
> Hmm. That is an odd one from a quick thought...
>
> However, IF you are planning on growing and adding OSSes/OSTs, this is not
> a bad way to get started and used to how everything works. It is basically
> a single stripe storage.
>
> If you are not planning on growing, I would lean towards gluster on 2
> boxes. I do that often, actually. A single MDS/OSS has zero redundancy,
> unless something is being done at harware level and that would help in
> availability.
> NFS is quite viable too, but you would be splitting the available storage
> on 2 boxes.
>
> Brian Andrus
>
>
>
> On 10/30/2017 12:47 AM, Amjad Syed wrote:
>
> Hello
> We are in process in procuring one small Lustre filesystem giving us 120
> TB  of storage using Lustre 2.X.
> The vendor has proposed only 1 MDS and 1 OSS as a solution.
> The query we have is that is this configuration enough , or we need more
> OSS?
> The MDS and OSS server are identical  with regards to RAM (64 GB) and  HDD
> (300GB)
>
> Thanks
> Majid
>
>
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