[OpenStack instance shelving](https://docs.openstack.org/ocata/user-guide/cli-stop-and-start-an-instance.html#shelve-and-unshelve-an-instance) allows you to stop an instance without having it consume any cloud hypervisor resources. A shelved instance will be retained as a bootable instance, as well as its resources assigned, such as an IP address in distributed storage, for a configurable amount of time, and then deleted. This is useful as part of an instance life cycle process or to conserve resources.
## What instance shelving does ?
## What does instance shelving do ?
It creates a snapshot of the state of **running** instance, containing instance data and resource allocations. Data in memory is **not** retained, however. The instance then goes into **Shelved Offloaded** state and shuts itself down. Once the instance is required again, it is **unshelved** and restored to a running state with all resources and data.
It creates a snapshot of the state of the **running** instance, containing instance data and resource allocations. Data in memory is **not** retained, however. The instance then goes into a **Shelved Offloaded** state and shuts itself down. Once the instance is required again, it is **unshelved** and restored to a running state with all resources and data.
## How to shelve your instance ?
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@@ -26,19 +26,18 @@ Go into your instance list, located at the left menu bar on the path **Project>C
Now the instance is offloaded from the computational host, and you can use resources from the shelved instance.
Once you are finished and wish to restore your instance into a running state, go and select from **Actions** menu the option **Unshelve Instance** and click it.
Once you are finished and wish to restore your instance to a running state, go and select the option **Unshelve Instance**from **Actions** menu and click it.
