Virtualization

How I pick a Proxmox VM CPU type: host versus the x86-64-vN virtual types, the OS floors that make the choice for you, the Spectre and Meltdown flags those types quietly leave off, and why host is usually the wrong default on Windows.

How I set cache, aio, iothread, and discard on Proxmox VMs, decided by how each VM is used rather than the OS inside it, plus the ZFS foundations that keep those choices safe to leave alone for years.