[lustre-discuss] Building Best Practices Guide

[Kyss Yousef]

Thank you for your response and help.

I'll go check out those references.

On Thu, Sep 29, 2022 at 9:47 PM Andreas Dilger <adilger at whamcloud.com>
wrote:

>
> -What does the minimum configuration look like?
> Example Minimum MDS/MDT, OSS/OST, what does that look like from a minimum
> storage capacity perspective?
>
>
> Few people care about *minimum* limits.  It is possible to format Lustre
> with a single 32MB MDT and 32MB OST, and mount both and a client on a 2GB
> VM.  This can be used for functional testing but isn't really useful for
> much beyond that.
>
> -What is the maximum capacity a Lustre cluster can scale?  (I have done
> some math and have come to 1EB max storage capacity)
>
>
> You can find most of the limits in the Lustre Operations Manual:
>
> https://doc.lustre.org/lustre_manual.xhtml#settinguplustresystem.tab2
>
> -What is a reasonable read/write throughput performance for the cluster?
> -Same question for R/W IOPs?
>
>
> and performance ranges in:
>
> https://doc.lustre.org/lustre_manual.xhtml#idm139922676214400
>
> The performance is *very* variable depending on the hardware, so there
> isn't a reasonable generic answer to that question.
>
> There are performance numbers for specific hardware:
>
>
> https://blocksandfiles.com/2021/11/10/ddn-doubles-performance-of-high-end-ai-array/
>
> -Does Lustre support snapshots?
>
>
> On ZFS it does.  On ldiskfs this is under development.
>
>  (I know there is a reference to this and many of my questions on the Wiki
> page hosted at wiki.lustre.org but I keep getting an error that it is
> down)
>
>
> It looks like the SSL certificate expired.
>
> -What are the protocols supported by Lustre?  I know it supports a POSIX
> client but how is it supporting NFS and SMB?  It looks like it is sharing
> the ZFS pool via NFS, but again the wiki is down and can't access it.
>
>
> Lustre primarily has its own network protocol, but by virtue of exposing
> POSIX to user space can also be re-exported via NFS and SMB, though at
> reduced performance compared to native clients.
>
> Cheers, Andreas
>
>
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