November 2001
Intermediate to advanced
158 pages
5h 10m
English
Content preview from IBM ESS and IBM DB2 UDB Working Together
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108 IBM ESS and IBM DB2 UDB Working Together
Performance — the reason why these tests were done
Since the introduction of the Enterprise Storage Subsystem many questions have been asked
regarding how best to place the data to encourage good performance with DB2. Database
administrators are used to working with a number of configurable parameters to tune the
database’s interaction with the disk I/O subsystem. However, the theory presented from the
ESS point of view was that many of these parameters would not need to be tuned in order to
achieve the throughput that the ESS subsystem is capable of. This is mainly due to features
built into the ESS, such as write-cache, non-volatile storage, and the ability to recognize
sequential patterns of ...
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