RTD | RealTime Defrag

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 8.3.0 is a complete replacement for RTD/zOS 8.1.0 and earlier releases, and includes the following optional features:

♦ PM – Preserve Mirror Support provides full support for devices using Remote Pair FlashCopy to maintain business continuity in z/OS environments with continuous dataset operations.  FRO is a pre-requisite for PM.

♦ FRO – The Fast Replication Option allows optimal I/O performance and reduced dataset enqueue contention by letting I/O operations run as a background task in the I/O device controller, rather than being executed by channel programs in an RTD address space. Since the operation is almost instantly complete from the viewpoint of RTD processing, datasets are enqueued for significantly shorter periods when data movement takes place. FRO supports FlashCopy V2 devices.

♦ MAS – Multiple Address Space Support allows concurrent processing of up to 28 volumes and circumvents the MVS TIOT size limit which restricts the number of allocations (about 3,200) within an address space.

The main new features of RTD/zOS Version 8.3.0 are:

♦  The TMADEFRAGMIN and CMADEFRAGMIN volume level SET statement parameters enable the DEFRAG function to be suppressed if the number of free extents on the volume being processed is less than a user specified limit.

♦  The RELEASE function RELEASE=MC option has been extended with the option RELEASE=MCALL to perform a RELEASE=ALL rather than RELEASE=EXT if the SMS Management Class and dataset status request RELEASE. In addition, for consistency, the option RELEASE=MCEXT may be also be specified with the same effect as RELEASE=MC.

♦  MAXDATA threshold warning message RTDD27W is now provided to alert the user when MAXDATA is nearly exhausted.

♦  Message RTDD06I is now written to SYSLOG when the global function changes the configuration.

♦  Message RTDL38W is now output as RTDL38I if no errors have been logged.

♦  The RTDISPF dialog provides a new service function to copy the content of an existing configuration to the currently selected configuration.

♦  The RTD STC internal processing of compiled specifications has been improved to reduce path lengths and CPU usage.

♦  RTD Optional Utilities (ROU) Version1.2.0 is included in the RTD/zOS Version 8.3.0 installation package.

Should you wish to test the Preserve Mirror Option, the Fast Replication Option (FRO) with support for FlashCopy Version 2 or Multiple Address Space (MAS) support, please contact support@dino-software.com so that we can provide you with the appropriate password data.

RTD End of Service Dates are:

♦  Product maintenance support for RTD/z/OS Version 8.1.0x will terminate on 06/01/2018.
♦  Product maintenance support for all RTD versions prior to RTD/zOS Version 8.1.0x
has been terminated.

* RTD is owned by INTERCHIP AG