RealTime Defrag | RTD

Reclaim Wasted Space

 Optimum DASD Utilization

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RealTime Defrag | RTD

Keep DASD in a Pristine State

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RealTime Defrag | RTD

Relax & Enjoy Purrrfect DASD

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RealTime Defrag | RTD

Keep DASD Constantly Groomed

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Set It & Forget It

Effortless DASD Defrag
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Shrinkage Can Be Good

Get RTD for significant reduction in wasted space and increased efficiency.

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RTD | RealTime Defrag

EFFICIENT OPTIMIZATION

RealTime Defrag | RTD


RealTime Defrag | RTD provides automatic and easily controlled z/OS DASD volume maintenance for the 24×7 operating environment, without the disruption to production schedules which legacy defrag and volume maintenance products engender, and with high throughput due to its advanced multiple address space architecture.  Today the availability and reliability of your organization’s data is critical to its success. But finding the time required to keep your systems operating efficiently often strains a data center’s resources and its ability to meet service level agreements. In order to utilize available resources more efficiently, more and more computer centers are optimizing their disk space with RealTime Defrag (RTD).


RTD/zOS Version 8.8.0 is a complete replacement for RTD/zOS 8.7.0 and earlier releases, and includes the following:

  • New RTD functions:
    • SPACEREL (optional license required)
      RTD SPACEREL can be used to release free extents on extent space efficient volumes back to the extent pool.
    • CHKVOL (optional license required)
      RTD CHKVOL will perform an integrity check on a volume’s VTOC prior to any subsequent processing.
  • Support for z/OS 3.1.
  • CHKVOL at RTD start-up (optional license NOT required)
    CHKVOL (see above) is automatically performed for any volume listed in message RTDL37W at RTD start-up.
  • A new RTD Task detects hang situations in the RTD address space(s) and issues appropriate messages to the system console.
  • RELEASE processing of compressed datasets has been optimized.
  • Message RTDC65E has been changed to RTDC65I and is only issued if the Message Level parameter on the RTD ISPF Dialog Global Control Specifications panel has the value ‘3’.
  • The RTD standard message header, (cn,volser,f), has been expanded to include the number of the currently active RTD configuration in the fourth position (cn,volser,f,o).
  • The dataset level INCLUDE/EXCLUDE SIZE parameter has been expanded to allow specifications in GB, TRK, and CYL.
  • New dataset level INCLUDE/EXCLUDE parameters SPACEUSED/SPACEFREE are now available to allow dataset selection based on the amount of space free or used on the current volume.
  • In addition to updating the CDS from the RTD Primary Option Menu, the CDS may now also be updated from the Configuration Selection panel via the command line option ‘U’.
  • A new facility allows the RTD administrator to save and restore sets of RTD Dialog Options.
  • RTD Statistics panels have been updated to include results from the new, optionally licensable, functions CHKVOL and SPACEREL.
  • The RTD administrator can now specify (in the Global Control Specifications panel) the number of days before the RTD expiration date to issue message RTDK11W.
  •  “Statistics for all volumes (NO / YES)” has been removed from the Global Control Specifications panel. Statistics will always be recorded for all volumes.

Please note that a new authorization password is required. Authorization passwords from previous RTD versions are no longer valid.

When you are ready to install RTD/zOS V880C, please contact Dino Technical Support to receive the RTD/zOS V880C installation package. You will be sent a new authorization password at that time. Also, if you wish to test the new licensable functions, CHKVOL and SPACEREL, please inform us and an additional, temporary authorization password will be provided to allow use of these functions during the test period.

RTD End of Service Dates are:

  • Product maintenance support for RTD/zOS Version 8.7.0x will terminate on 30 September 2025.
  • Product maintenance support for all RTD versions prior to RTD/zOS Version 8.7.0x has already been terminated.
* RTD is owned by INTERCHIP AG