Windows Server 2025 will let you run a VM with 2,048 vCPUs, 240 TB RAM, and 68 network adapters. Each VM can support up to 256 SCSI disks, four SCSI controllers, and virtual disks can reach 64 terabyte apiece. You can also have 68 virtual network adapters, alongside four virtual fiber channel adapters. Hosts for Hyper-V reach even greater heights – with 4 petabyte of memory permitted. Clusters can scale to 64 nodes and host 8,000 VMs. Some of the large numbers above can only be reached with Gen-2 virtual machines, which were designed to scale higher and include Trusted Platform Modules and the Unified Extensible Firmware Interface. Gen-2 virtual machines will become the default under Windows Server 2025. SAP can require tens of terabytes of RAM. AI training workloads will need truckloads of storage and memory. It just makes sense for Microsoft to make sure its platform can handle those requirements.
The other reason is that Broadcom’s acquisition of VMware has given virtualization shops a good reason to consider their options. While Hyper-V and its adjacent tools – like the System Center Virtual Machine Manager – are generally rated inferior to VMware’s stack, Broadcom’s new licensing plans have angered many users. And it’s a rare IT operation that doesn’t have some entitlement to Windows Server and therefore Hyper-V.
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