DocumentationFlavors
OpenStack flavor entity defines compute virtual server parameters such as:
- virtual server specifications
- vCPU count
- memory amount
- storage size (distributed)
- defines QoS (IOPs, network bandwith, …)
- defines set of compute hypervisors where can be virtual server scheduled (via host aggregates)
Flavor types and naming schema
| Flavor type | Flavor characteristic | (live) migration support | GPU support | Local ephemeral disk resources | vCPU overcommit | Network QoS (in/out) | Disk QoS |
|---|---|---|---|---|---|---|---|
e1.* | economic computing, small jobs, limited performance | Yes | No | No | 1:8 | 256 Mbit/s | 250 MB/s, 2000 IOPS |
c2.* | compute, medium performance | Yes | No | No | 1:2 | 2 Gbit/s | 2000 MB/s, 3000 IOPS |
c3.* | compute, high performance, no CPU overcommit | Yes | No | No | 1:1 | 10 Gbit/s | 2000 MB/s, 3000 IOPS |
Notes:
- Unless stated otherwise in the flavor name (
*-100disk,*-500diskvariants), the root disk size is 80 GB, provided from replicated Ceph storage. There are currently no flavors with local ephemeral disks. e1.*flavors are public (available in all projects).c2.*andc3.*flavors need to be explicitly enabled for a group project — request access via support or the quota increase form.- There is currently no GPU support on this cloud site.
