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IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning
book

IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning

by Cathy Warrick, Craig Gordon, Benoit Granier, Keitaro Imai, Rosemary McCutchen, Brannen Proctor, Jim Sedgwick, Paulus Usong, Mary Ann Vandermark, John Wickes
December 2005
Intermediate to advanced content levelIntermediate to advanced
530 pages
18h 34m
English
IBM Redbooks
Content preview from IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning
Chapter 13. Databases 421
13.3.5 MIDAWs
MIDAWs, as described in 10.7.1, “MIDAWs” on page 368, helps improve performance when
accessing large chains of small blocks of data. In order to get this benefit the dataset must be
accessed by Media Manager. The bigger benefit is realized for the following datasets:
򐂰 Extended Format (EF) datasets
򐂰 Has small block sizes (4K)
Examples of DB2 applications that will benefit from MIDAWs are DB2 prefetch and DB2
utilities.
13.3.6 Monitoring the DS6000 performance
RMF can be used to monitor the performance of the DS6000. For a detailed discussion, see
10.9, “DS6000 performance monitoring tools” on page 371.
13.4 ...
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ISBN: 0738494119Purchase book