Based on documentation for similar IOS XRv releases, the 5.2.2 demo version typically adheres to these resource allocations: Minimum Requirement Recommended 2 (for better stability) Virtual RAM 3072 MB (3 GB) 4096 MB (4 GB) Virtual Disk Hypervisor VMware ESXi, VirtualBox QEMU/KVM (for GNS3/EVE-NG) 3. Demo Version Limitations