By: Doug S (foo.delete@this.bar.bar), October 17, 2021 10:17 am
Room: Moderated Discussions
me (me.delete@this.me.com) on October 17, 2021 5:19 am wrote:
> > You can designate which servers a particular VM is eligible to move to, but you'd
> > have to know in advance that VM may use AVX512 to take that into account.
>
> Best to just keep similar hardware in their own cluster and new hardware in it's own cluster.
But not always practical. If you have only one cluster at a certain site or dedicated to a certain application suite / function, you would have to expand with models containing older CPUs instead of getting newer/better ones, need to replace everything when you upgrade, etc.
Reality often trumps what would make things easiest for admins.
> > You can designate which servers a particular VM is eligible to move to, but you'd
> > have to know in advance that VM may use AVX512 to take that into account.
>
> Best to just keep similar hardware in their own cluster and new hardware in it's own cluster.
But not always practical. If you have only one cluster at a certain site or dedicated to a certain application suite / function, you would have to expand with models containing older CPUs instead of getting newer/better ones, need to replace everything when you upgrade, etc.
Reality often trumps what would make things easiest for admins.