On January 23, 2020 11:45:37 AM GMT+02:00, Benedetto Vassallo
<benedetto.vassallo(a)unipa.it> wrote:
Def. Quota Strahil Nikolov <hunter86_bg(a)yahoo.com>:
> On January 22, 2020 6:46:39 PM GMT+02:00, Benedetto Vassallo
> <benedetto.vassallo(a)unipa.it> wrote:
>> Hello Guys,
>> Here at University of Palermo (Italy) we are planning to switch from
>> vmware to ovirt using the hyperconverged solution.
>> Our design is a 6 nodes cluster, each node with this configuration:
>>
>> - 1x Dell PowerEdge R7425 server;
>> - 2x AMD EPYC 7301 Processor;
>> - 512GB of RAM (8x 64GB LRDIMM, 2666MT/s, Quad Rank);
>> - 2x Broadcom 57412 Dual Port 10Gb SFP+ ethernet card;
>> - 3x 600GB 10K RPM SAS for the OS (Raid1 + hotspare);
>> - 5x 1.2TB 10K RPM SAS for the hosted storage domain (Raid5 +
>> hotspare);
>> - 11x 2.4TB 10KRPM SAS for the vm data domain (Raid6 + hotspare);
>> - 4x 960GB SSD SAS for an additional SSD storage domain (Raid5 +
>> hotspare);
>>
>> Is this configuration supported or I have to change something?
>> Thank you and Best Regards.
>> --
>> Benedetto Vassallo
>> Responsabile U.O. Sviluppo e manutenzione dei sistemi
>> Sistema Informativo di Ateneo
>> Università degli studi di Palermo
>>
>> Phone: +3909123860056
>> Fax: +3909123860880
>
> Hi,
>
> Recently it was mentioned that there were some issues with the 'too
> new' EPYC.
> For now, you can do :
> 1. Use some old machines for initial setup of the HostedEngine VM
> (disable all Spectre/Meltdown in advance) -> and then add the new
> EPYC-based hosts and remove the older systems. Sadly, the older
> systems cannot be too old :)
>
> 2. Host the HostedEngine VM on your current VmWare environment or on
> a separate KVM host. Hosting the HostedEngine on bare metal is also
OK
>
> 3. Wait (I don't know how long) till EPYC issues are solved.
>
> Best Regards,Strahil Nikolov
Thank you.
Maybe it's better to use Intel processors?
Best Regards.
--
Benedetto Vassallo
Responsabile U.O. Sviluppo e manutenzione dei sistemi
Sistema Informativo di Ateneo
Università degli studi di Palermo
Phone: +3909123860056
Fax: +3909123860880
Amd is giving higher memory bandwidth and higher bang/buck ratio with more cores per $
compared to intel - so I wouldn't recommend intel.
I guess you can try with installing an older version (v 4.2.X) and then upgrade the
cluster to 4.3 .
Good Luck and Welcome to oVirt.
Best Regards,
Strahil Nikolov