Dear Solaris Experts,

We are upgrading from sun4u to T4 systems and one proposal is to use LDOMs and also zones within LDOMs.

Someone advised using only zones and not LDOMs because the new machines have fewer chips and if a chip or a core fails then it doesn't impact the zones, but impacts the corresponding LDOMs.

What's the failure rate / probability of core failure on sun4v?

What are your experiences with the sun4v systems?

Do you avoid using LDOM for this or for any other reason?

Is a system with LDOMs inherently less reliable than one without, esp. since all guest LDOMs depend on the primary.

If each LDOM is given at least 2 cores each, then does that mitigate the total loss of the LDOM if one core is lost?

Thanks in advance for your help.