Performance: Divide KVM and OpenVz machines between two server?

[BiagioParuolo]

Hi,

Would I've a benefit in performance if I running OpenVz machine on one server and KVM machine on another server?

Thank you

 

[tom]

if you mean that 2 server has more performance than one, yes

the most important part of a virtualization server is fast and reliable storage (local and SAN) - in up to 99 % of installations the IO is the bottleneck.

 

[BiagioParuolo]

I mean that from one server ( 4 Kvm and 2 OpenVZ ), I'm going on two new server ...

 

[tom]

OpenVZ is best on Kernel 2.6.18. and KVM is best on 2.6.32. so its principle a good idea to have two servers. but you cannot migrate OpenVZ to 2.6.32 and also KVM live migration between different kernel is not possible.

I would use 2.6.18 on both and as soon as 2.6.32 has stable OpenVZ support, you can migrate both to 2.6.32.

 

[BiagioParuolo]

Maybe a good choice to use 2.6.24?

 

[tom]

read my previous post.

 

[BiagioParuolo]

then...if on new server I've 2.6.18 and I restore machine ( saved from old server with 2.6.24 ), I must update to 2.6.24 or not?[FONT=&quot][/FONT]

 

[tom]

no.

 

[BiagioParuolo]

Then..

Solution 1)
One server for KVM with 2.6.32 and One for OpenVz with 2.6.18

Solution 2) Two server ( for load balancing and fault tolerant ) with 2.6.18. So, because 2.6.24 was released? What are 2.6.24 features respect 2.6.18?

 

[tom]

see http://pve.proxmox.com/wiki/Proxmox_VE_Kernel

 

[Comune di Levico Terme]

Then..

Solution 1)
One server for KVM with 2.6.32 and One for OpenVz with 2.6.18

Solution 2) Two server ( for load balancing and fault tolerant ) with 2.6.18. So, because 2.6.24 was released? What are 2.6.24 features respect 2.6.18?

with 2.6.24 you can use scsi disk for kvm guest, with 2.6.18 no.