Specifies where Jenkins will store workspaces for builds that are executed on the master.
It has no effect on builds that are executed on agents.

This value may include the following variables:

- `${JENKINS_HOME}` — Absolute path of the Jenkins home directory
- `${ITEM_ROOTDIR}` — Absolute path of the directory where Jenkins stores the configuration and related metadata for a given job
- `${ITEM_FULL_NAME}` — The full name of a given job, which may be slash-separated, e.g. `foo/bar` for the job `bar` in folder `foo`

The value should normally include `${ITEM_ROOTDIR}` or `${ITEM_FULL_NAME}`, otherwise different jobs will end up sharing the same workspace.

As builds tend to be disk I/O intensive, changing this value enables you to put build workspaces on faster storage hardware, such as SSDs or even RAM disks.

Any changes to this value will take effect as soon as this configuration page is saved, but note that Jenkins will not automatically migrate any data from the current workspace root directory.

The default value is `${JENKINS_HOME}/workspace/${ITEM_FULLNAME}`.