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Get VR for Dynamic VSAM Batch Tuning

VELOCI-Raptor (VR) is an intelligent, intuitive, performance optimization tool designed to dramatically improve system performance while significantly reducing system overhead by automating tuning activities. VR assists IT departments in meeting increased service level demands and helping manage growing workloads.  VR reduces overhead by optimally allocating buffers for VSAM and non-VSAM files to provide the best throughput and response time for I/O requests.


What does VELOCI-Raptor (VR) do?

For VSAM optimizations
VR intelligently selects either the NSR (Non-Shared Resource) or LSR (Local Shared Resources) buffering techniques, and then uses its internal optimization rules and services to make the most efficient and effective use of that buffering technique.

VR supports all current VSAM macro formats, and can intelligently use those macro formats in conjunction with the selected buffering technique to accelerate application processing. When needed, VR can exploit the use of all 256 LSR buffer pools. VR also provides VSCR (Virtual Storage Constraint Relief) by placing VSAM control blocks and buffers above the 16MB line.

For non-VSAM optimizations
VR ensures optimal tuning and buffer allocation by selecting a buffer count that will optimize the use of SAM/E chained scheduling for asynchronous sequential access (QSAM).

Why optimize batch processing performance and reduce system overhead?

By buffering VSAM and non-VSAM files more efficiently, your system can process applications more quickly and with less demand on the CPU. VR allows users to defer CPU upgrades, thereby saving both time and money.

How does VELOCI-Raptor work?

VR contains a proprietary database containing the rules and parameters that deliver the best I/O performance based on the current characteristics of the target data set and the type of access. Users can override these rules by keying in their own parameters, or by excluding a dataset or job name from VR’s optimization process. Most users however, use the default parameters and achieve outstanding results from VR’s I/O optimization. VR monitors the open and close of any data set and optimally buffers VSAM, QSAM, and BSAM files to significantly reduce the time required for batch processing.

What are the primary challenges that VELOCI-Raptor addresses?

The primary challenges faced by data centers are the need to reduce batch processing time, the need and ability to meet service level agreements, the requirement to maximize system performance without extensive programming changes and the ability to determine system-wide impact of application tuning activities. VR addresses these challenges by:

How would I use VELOCI-Raptor?

VR is easily and transparently installed on any z/OS system. Once enabled, batch I/O requests are analyzed with the resulting buffering environment being modified to utilize the best possible accesses to each file. An immediate and dramatic difference in run times will be seen as buffers are allocated more efficiently, EXCPs are reduced, more storage is available for application programs, and file processing is optimized.


What kind of reports can VELOCI-Raptor generate?

Detailed statistics can be produced showing the type of buffering that was applied and the amount of data movement that occurred. Also available is the number and type of program I/O requests for VSAM files. These statistics may also be recorded in SMF records for later analysis.

How can VELOCI-Raptor save me money?

VR allows you to:

What kind of results should I expect?
VR customers routinely report that they can reduce VSAM batch processing times from 60 percent to 90 percent.
Some non-VSAM batch processing times can be reduced by a significant percent.
VR can also have an impact on some DB2 Unloads and Reloads.

What operating environment does VELOCI-Raptor require?
VR runs on all z/OS platforms and requires 68kb of common storage (CSA) below the 16MB line. The user interface requires ISPF Version 3.3 or above.