If Windchill is unable to write to a folder from any mount point, this folder is automatically set to read-only. This occurs even if the failure is temporary, such as an interruption in network access to vaults stored on network-attached storage or storage area network location. If all folders for a vault are set read-only, the vault is also set read-only.

Therefore, it is recommended you create notification rules to alert an administrator when folders and vaults have become read-only. You can do this from the Policy Administration utility by selecting the System (Site) domain and creating a notification rule for the administrator user for the OVERFLOW event for the wt.fv.FvVault and wt.fv.FvFolder object types.

If you are notified that a vault has been set read-only, you should investigate the cause. If the mount for a folder can be validated, it is typically safe to disable the read-only setting for this folder and its corresponding vault.