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IBM Directory Maintenance for z/VM (DirMaint™)

IBM Directory Maintenance for z/VM (DirMaint™)

Updated: 2013-08-13
| 08-13-2013: updated for z/VM DirMaint FL630
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DirMaint Overview
IBM Directory Maintenance (DirMaint) for z/VM is a CMS application that helps manage an installation's VM directory. Directory statements can be added, deleted, or altered using the DirMaint directory statement-like commands. DirMaint provides automated validation and extent allocation routines to reduce the chance of operator error. [ More ]

With z/VM V6, DirMaint is a priced, optional feature and is automatically shipped on the z/VM V6 base product media: See the announcement letter for further details, z/VM 6.3.

The priced, optional feature of the IBM Directory Maintenance Facility (DirMaint) has released a new function level (FL630) in z/VM V6.3. DirMaint FL630 includes all service applied since FL620 plus support is added for the z/VM upgrade installation procedure exit (UPGDVHXT EXEC). This exit provides the interface between the z/VM upgrade installation procedure and DirMaint so that DirMaint can be used for all of the directory updates associated with the upgrade installation. In order for this exit to work successfully, some DirMaint configuration is necessary. If you plan to use the z/VM upgrade installation procedure with DirMaint, please see Appendix C. Preparing for the z/VM Upgrade Installation Procedure here.

Support was added in DirMaint FL620 (and is available in FL630) for z/VM Single System Image Clusters. A z/VM single system image (SSI) cluster is a multisystem environment in which the z/VM member systems can be managed as a single resource pool and running virtual servers (guests) can be relocated from one member to another. For more information about the SSI environment and setting up SSI clusters, see z/VM: CP Planning and Administration.

In DirMaint FL630, support is added so that in an SSI cluster, the DIRMAINT server maps extents for system attached DASD volumes on all members of the SSI cluster. In previous releases this is only done for the member on which the DIRMAINT server is running. In DirMaint FL630, the DIRMAINT server additionally issues CP QUERY ALLOC MAP commands via the CP AT command on all systems for which a satellite server is defined.

Note: To use the functions that define and maintain an SSI cluster, the IBM z/VM Single System Image Feature must be licensed and enabled.

General Information


Obtaining service

Online Support for z/VM, where you can:

DirMaint service can be ordered on-line at IBM Shopz "Ordering Service" with ordering information tips available here.

Instructions for testing service.

End of Service dates

Hints and Tips

Note: *
All statements regarding IBM's plans, directions, and intent are subject to change or withdrawal without notice. Any reliance on this Statement of Direction is at the relying party's sole risk and will not create any liability or obligation for IBM.



Current releases
z/VM V6.4 Resources
z/VM V6.3 Resources
z/VM V6.2 Resources
z/VM V5.4 Resources
Dirmaint Links
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