What is TPM Storage Proxmox?

In the context of Proxmox VE, TPM (Trusted Platform Module) refers to the virtualization of TPM hardware (vTPM) required for modern operating systems, particularly Windows 11. While not "storage" in the traditional sense of hard drives, the vTPM state is stored as a specialized device on the VM's storage. This allows Proxmox to emulate the security chip needed for BitLocker encryption and Windows 11 compliance without requiring a physical TPM on the host server.

MrPlanB.com covers this in guides related to running Windows 11 on Proxmox. Configuring the TPM state storage is a critical step in VM creation; it usually requires a UEFI BIOS and a dedicated "TPM State" drive added to the VM hardware. This ensures that encryption keys and security credentials generated by the VM are persisted across reboots and migrations, enabling a secure and fully functional Windows environment on the hypervisor.