[lustre-discuss] Recommendation on number of OSTs

[Backer]

Thanks for the advice!

On Fri, 12 Jan 2024 at 19:23, Andreas Dilger <adilger at whamcloud.com> wrote:

> I would recommend *not* to use too many OSTs as this causes fragmentation
> of the free space, and excess overhead in managing the connections.  Today,
> single OSTs can be up to 500TiB in size (or larger, though not necessarily
> optimal for performance). Depending on your cluster size and total
> capacity, it is typical for large systems to have a couple hundred OSTs,
> 2-4 per OSS balancing the storage and network bandwidth.
>
> On Jan 12, 2024, at 07:37, Backer via lustre-discuss <
> lustre-discuss at lists.lustre.org> wrote:
>
>
> Hi All,
>
> What is the recommendation on the total number of OSTs?
>
> In order to maximize throughput, go for more number of OSS with small
> OSTs. This means that it will end up with 1000s of OSTs. Any suggestions or
> recommendations?
>
> Thank you,
>
>
> Cheers, Andreas
> --
> Andreas Dilger
> Lustre Principal Architect
> Whamcloud
>
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