Getting the Most out of zEDC Hardware Compression

Todd-Havekost

By Todd Havekost

One of the challenges our customers tell us they face with their existing SMF reporting is keeping up with emerging z/OS technologies. Whenever a new element is introduced in the z infrastructure, IBM adds raw instrumentation for it to SMF. This is of course very valuable, but the existing SMF reporting toolset, often a custom SAS-based program, subsequently needs to be enhanced to support these new SMF metrics in order to properly manage the new technology.

z Enterprise Data Compression (zEDC) is one of those emerging that is rapidly gaining traction with many of our customers, and for good reasons:

  • It is relatively straightforward and inexpensive to implement.
  • It can be leveraged by numerous widely used access methods and products.
  • It reduces disk storage requirements and I/O elapsed times by delivering good compression ratios.
  • The CPU cost is very minimal since almost all the processing is offloaded to the hardware.

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