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Volume Specifications

In OpenStack, “volumes” are persistent storage that you can attach to your running OpenStack Compute instances to. In Optimist we have set up three classes of service for volumes. These have different limits, which are detailed below.

Volume Types

We have three main volume types:

  • high-iops
  • default
  • low-iops

Volume QoS List

An overview of the three volume types below:

NameAssociationsRead Bytes SecRead IOPS SecWrite Bytes SecWrite IOPS Sec
qos-high-iopshigh-iops5242880001000052428800010000
qos-defaultdefault20971520025002097152002500
qos-low-iopslow-iops5242880030052428800300

Choosing a Volume Type

You can select one of the three volume types upon creation of a volume with the following command (Unless otherwise specified, the type “default” is always used): $ openstack volume create <volume-name> --size 10 --type high-iops