IT 3300 : Proxmox

Proxmox Storage

Proxmox storage - Types

• File-level storage
  • Allow access to a full-featured filesystem (linux)(Posix)
  • More flexible than block
  • Store any type content
• Block-level storage
  • Storage of raw images
  • think of as a remote hard-drive
• See table 2

Proxmox storage - thin provisioning

• Many storage types and qcow2 support thin-provisioning
• Say for instance you create a VM with a 32GB hard disk, and after installing the guest system OS, the root file system of the VM contains 3 GB of data. In that case only 3GB are written to the storage, even if the guest VM sees a 32GB hard drive. In this way thin provisioning allows you to create disk images which are larger than the currently available storage blocks

Proxmox storage - Directory layout

See table 3.

Ceph (Rados block devices)

Distributed object store and file system.

• thin provision
• resizable volumes
• distributed and redundant
• snapshot and cloning
• self healing
• no spof
• scalable to exabyte level