Physical Machines vs LPARs

[Former Member]

Hello,

In order to install ECC6 on AIX machine (Production instance), is it better to have both ECC instance & DB instance on the same machine without LPARs configuration, or to have each instance on a separate LPAR?

Thanks for advice.

Waleed

[ChrisGela]

HI,

The benefit, of having separate LPARs for your DB and CI, is that is is easier to troubleshoot hardware/software problems if any had to occur.

The benefit, of a single LPAR/physical, is that from an administration point of view, it is easier to maintain. E.G, if OS patches need to be applied then you need to patch 2 systems.

Kind Regards,

Chris

Edited by: Chris Geladaris on Mar 16, 2010 7:11 PM

[Former Member]

Thanks for your reply.

But from performance point of view, is both situation will utilize the machine resources in effective way?

Waleed

[Former Member]

The difference would be that by creating LPAR's you will have overhead because of Hypervisor and virtual I/O and storage. Also you would be able to allocate CPU and memory dynamically based on usage to the LPAR's, where as physical machine will not have this overhead and will use the memory and CPU configured on the system.

Hope this helps.

Thanks,

Naveed

[Former Member]

Its better if you keep them separate. I don't think that there are clear guidelines. We are also using AIX and have all our Apps and DB's installed on there own LPAR's.

Thanks,

Naveed