Client drive mapping allows drive letters on the XenApp server to be redirected to drives that exist on the user device. For example, drive H in a Citrix user session can be mapped to drive C of the local device running the plug-in.
Client drive mapping is built into the standard Citrix device redirection facilities transparently. To File Manager, Windows Explorer, and your applications, these mappings appear like any other network mappings.
Note that Client drive mapping is not supported when connecting to MetaFrame Server 1.0 for UNIX operating systems.
The XenApp server can be configured during installation to map client drives automatically to a given set of drive letters. The default installation mapping maps drive letters assigned to client drives starting with V and works backward, assigning a drive letter to each fixed drive and CD-ROM drive. (Floppy drives are assigned their existing drive letters.) This method yields the following drive mappings in a session:
| Client drive letter | Is accessed by the XenApp server as |
| A | A |
| B | B |
| C | V |
| D | U |
The XenApp server can be configured so that the server drive letters do not conflict with the client drive letters; in this case the server drive letters are changed to higher drive letters. For example, changing server drives C to M and D to N allows client devices to access their C and D drives directly. This method yields the following drive mappings in a session:
| Client drive letter | Is accessed by the XenApp server as |
| A | A |
| B | B |
| C | C |
| D | D |
The drive letter used to replace the server drive C is defined during Setup. All other fixed drive and CD-ROM drive letters are replaced with sequential drive letters (for example; C > M, D > N, E > O). These drive letters must not conflict with any existing network drive mappings. If a network drive is mapped to the same drive letter as a server drive letter, the network drive mapping is not valid.
When a client device connects to a XenApp server, client mappings are reestablished unless automatic client device mapping is disabled. You can use the Terminal Services Configuration tool to configure automatic client device mapping for ICA connections and users. You can also use policies to give you more control over how client device mapping is applied. For more information about policies, see the Citrix XenApp Administrator’s documentation.
Reference: Mapping Client Drives to XenApp Server Drive Letters
