About Mounts
A mount is the association between a folder or a root folder and a host. When you create or update a mount, you specify how the Windchill method server running on the host accesses a specific file storage location on a host.
All folders or root folders must be mounted to all available hosts. Otherwise, a method server running on a host without a mount is unable to access content files when a download operation is requested. When a folder or a root folder is mounted to more than one host (for example, in a cluster), all mount paths associated with one folder or root folder must point to the same physical location.
When defining or updating a mount, you must specify the following:
• The folder or root folder to be mounted on the specified host system. If the Host Type is Cluster Node, the mounts are created for all hosts having the Host Type of Cluster Node.
• The path to the physical storage location represented by the folder or root folder. If a mount is directed to a nonexistent path, uploads to and downloads from this folder fail. Each vault folder or root folder must have its own unique directory.
When a folder is mounted to a directory and the vault and folder are validated successfully, a directory called MOUNT_VALIDATION_DATA is created and a file whose name starts with Site_ is created in that directory. If the folder mount is changed later, and you want to use this directory path as a mount for another folder, you must delete this file first.
Changing the path value associated with a mount makes all files stored in the previous location inaccessible until they are moved to the new path location. Use the following update procedure to avoid download failures when you are changing a mount location:
1. Update the folder and assign it read-only status to prevent additional files from being uploaded to the current location.
2. Copy the existing files to the new storage location.
3. Update the mount with the new path specification.
4. Update the folder again to clear the read-only status.
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Each folder must have its own unique directory to store the content. For example, two folders should not have the same physical location. Otherwise, data loss may occur.
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Do not simply unmount the vaults that contain files that are referenced by objects in the Windchill database.
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You must ensure that folders in the vault configuration are validated for them to be used. Content is written only to folders that are validated and when the status of the corresponding mount is valid.
For example, if a user creates a folder, mounts it, and does not validate it, content is not written even if the mount path is correct. In another case, if a user shares a folder from a remote machine without setting Modify permission for other users to access the folder over the network, an attempt to validate the mount to that folder in the Vault Configuration utility shows an INVALID mount status and content cannot be written to that folder.
In other words, content is written only to the vault folders for which all the mounts that have a mount status of VALID.
