1Y0-301 · Question #34
Which two statements are true regarding what is required when adding a new XenServer host to a heterogeneous XenServer resource pool? (Choose two.)
The correct answer is C. The server joining the pool is running the same version of XenServer and hotfixes. D. The features of the older CPUs must be a sub-set of the features of the CPUs of the server. In a heterogeneous XenServer resource pool, all hosts must run the same XenServer version and hotfixes, and the joining host's CPU feature set must not exceed those of the existing pool's CPUs.
Question
Which two statements are true regarding what is required when adding a new XenServer host to a heterogeneous XenServer resource pool? (Choose two.)
Options
- AThe host hardware must be identical.
- BThe CPU of the joining host must support hyper-threading.
- CThe server joining the pool is running the same version of XenServer and hotfixes.
- DThe features of the older CPUs must be a sub-set of the features of the CPUs of the server
How the community answered
(32 responses)- A3% (1)
- B3% (1)
- C94% (30)
Why each option
In a heterogeneous XenServer resource pool, all hosts must run the same XenServer version and hotfixes, and the joining host's CPU feature set must not exceed those of the existing pool's CPUs.
Hardware does not need to be identical; heterogeneous pools are specifically designed to support different hardware models, which is why CPU leveling is required.
Hyper-threading support on the joining host's CPU is not a stated requirement for pool membership; pool joining is governed by software version and CPU feature compatibility.
XenServer requires all hosts in a pool to run the identical version of the hypervisor software and applied hotfixes to ensure consistent behavior, live migration compatibility, and pool-wide management coherence.
In a heterogeneous pool where CPUs differ across hosts, XenServer applies CPU leveling - the joining host's CPU features must be a subset of (or equal to) the lowest common feature set already in the pool so that VMs remain live-migratable to any host without exposing unsupported instructions.
Concept tested: XenServer heterogeneous resource pool membership requirements
Source: https://docs.citrix.com/en-us/citrix-hypervisor/hosts-pools.html
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