CompTIA A+ Core 1 (220-1201)Virtualization and Cloud ComputingHard
A company is experiencing performance issues on a virtualization host. After investigation, the administrator finds that several virtual machines are consuming significantly more CPU and RAM than initially allocated, leading to contention for physical resources. What term describes this situation where VMs are gradually demanding more resources than anticipated or required, often without being properly managed?
- AVM resource creep
- BVM sprawl
- CResource starvation
- DResource contention
Show answer & explanationAnswer & explanation
Correct answer: A. VM resource creep
VM resource creep refers to the gradual, often unnoticed, increase in the allocated or consumed resources (CPU, RAM, storage) by virtual machines over time. This can lead to performance degradation on the host due to resource contention, even if the VMs are still active and 'needed,' distinguishing it from VM sprawl, which is about unused VMs.
Why the other options are wrong
- B. VM sprawl refers to having too many unused or unmanaged VMs, not necessarily increasing resource usage by active VMs.
- C. Resource starvation means a VM cannot get enough resources, often due to contention, but 'creep' describes the cause.
- D. Resource contention is the effect of multiple VMs competing for limited physical resources, not the cause of increasing demand.
VM Resource Creep
The gradual and often unmanaged increase in the CPU, RAM, or storage allocated to or consumed by active virtual machines over time, leading to potential resource contention on the host.
- Gradual increase in VM resource usage.
- Affects active VMs, not just unused ones.
- Can lead to performance degradation on the host.
Memory trick: Resource 'CREEP' is like resources slowly 'CREEPING' up.