In VMware ESXi 5.5, the most significant "feature" introduced regarding licensing was the . Previous versions, like ESXi 5.1, had a strict 32GB limit per host for the free hypervisor license; in version 5.5, this was completely lifted, allowing for unlimited physical RAM usage. Key Features of the ESXi 5.5 Free License

: Introduced support for up to 120 SATA devices per virtual machine and compatibility with new CPU architectures.

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