Overview

ZStack Cube Virtualization Edition provides resource allocation, dynamic resource scheduling, VM scheduling policies, and VM HA policies to help administrators control how resources are used in a virtualized environment and maintain service continuity when host loads change or VM-related resources fail.

Resource allocation and overcommit define the CPU, memory, and storage capacity that can be allocated to VMs. Administrators can plan VM resource usage based on CPU overcommit ratio, memory overcommit ratio, data storage overcommit ratio, and reserved capacity, and use the capacity calculation rules to understand the remaining allocatable capacity.

Cluster DRS monitors host loads in a cluster and provides migration suggestions or migrates VMs based on manual or automatic scheduling policies. VM scheduling policies define affinity or anti-affinity relationships between VMs, or between VMs and hosts. VM HA policies trigger automatic restart or migration when a VM stops unexpectedly or related resources fail.