Arriving more than three months after Proxmox VE 5.0 release, Proxmox VE 5.1 is a point release adding updated components based on the upstream repositories of the Debian GNU/Linux 9.2 “Stretch” operating system, along with the Linux 4.13 kernel series and the latest Ceph 12.2 “Luminous” and ZFS 0.7.2 releases. Starting with the Proxmox VE 5.1 release, all Ceph cluster packages will be readied by the Proxmox devs, and it looks like the Bluestore FS Ceph OSD storage backend is now the default, delivering extra performance up to 200 percent, built-in compression, as well as full data check-summing.