Hello,

> I'm curious however if the ARM servers are better or not for this use case 
> (object-storage only).  For example, instead of using 2xSilver/Gold server, I 
> can use a Taishan 5280 server with 2x Kungpen 920 ARM CPUs with up to 128 
> cores in total .  So I can have twice as many CPU cores (or even more) per 
> server comparing with x86.  Probably the price is lower for the ARM servers 
> as well.

Even if they would be cheaper, which I strongly doubt, you will get
less performance out of them. More cores won't give you any benefit in
Ceph, but having much faster cores is somewhat of a game changer. Just
use a good AMD Epyc for best price/performance/power ratio.

> Has anyone tested Ceph in such scenario?  Is the Ceph software really 
> optimised for the ARM architecture ?  What do you think about this ?

If you choose ARM for your Ceph, you are one of very very few people
and will most properly hit some crazy bugs that will cause trouble. A
high price to pay in my opinion just for an "imaginary" performance or
power reduction benefit. Storage has to run 24*7 all year long without
a single incident. Everything else in my world is inacceptable.

--
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Am Di., 24. Nov. 2020 um 13:57 Uhr schrieb Robert Sander
<[email protected]>:
>
> Am 24.11.20 um 13:12 schrieb Adrian Nicolae:
>
> >     Has anyone tested Ceph in such scenario ?  Is the Ceph software
> > really optimised for the ARM architecture ?
>
> Personally I have not run Ceph on ARM, but there are companies selling
> such setups:
>
> https://softiron.com/
> https://www.ambedded.com.tw/
>
> Regards
> --
> Robert Sander
> Heinlein Support GmbH
> Schwedter Str. 8/9b, 10119 Berlin
>
> http://www.heinlein-support.de
>
> Tel: 030 / 405051-43
> Fax: 030 / 405051-19
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