The existing storage types available in our clouds are: * [[Working_with_volumes | Volume storage]]: The standard storage unit for cloud computing; can be attached to and detached from an instance. * Ephemeral/Disk storage: Virtual local disk storage tied to the lifecycle of a single instance on a hypervisor's local disk ("c" flavor local disk can be lost) * [[Arbutus object storage | Object storage]]: Non-hierarchical storage where data is created or uploaded in whole-file form. * [[Arbutus_CephFS | Shared filesystem storage]]: Private network attached storage space (similar to NFS/SMB shares); must be configured on each instance where it is mounted. Attributes of each storage type are compared in the following table: {| class="wikitable sortable" ! Attribute !! Volume storage !! Ephemeral/Disk storage !! Object storage !! Shared filesystem storage |- | Default storage option || Yes || Yes || No || No |- | Can be accessed via a web browser || No || No || Yes || No |- | Access can be restricted for specific source IP ranges || N/A || N/A || Yes (S3 ACL) || N/A |- | Can be mounted on a single VM || Yes || Yes || No || Yes |- | Can be mounted on multiple VMs (and across projects) simultaneously || No || No || No || Yes |- | Automatic backups || No (manually with snapshots) || No || No || Yes (nightly to tape) |- | Suitable for write once, read only, and public access || No || No || Yes || No |- | Suitable for data/files that change frequently || Yes || Yes || No || Yes |- | Hierarchical filesystem || Yes || Yes || No || Yes |- | Suitable for long-term storage || Yes || No || Yes || Yes |- | Suitable mountable dedicated storage for individual servers || Yes || Only for temporary data || No || No |- | Deleted automatically upon deletion of VM || No || Yes || No || No |- | Standard magnitude of allocation || GB || GB || TB || TB |- | Multi-disk fault tolerance || Yes || c-flavors No; p-flavors Yes || Yes || Yes |- | Physical disk-level encryption || No || No || No || No |- |} [[Category:Cloud]]