IBM TotalStorage DS4000 Storage SAS 9 on the IBM for eServer p590
This document presents the storage findings and recommendations for SAS 9.1 with IBM TotalStorage DS4000 disk arrays (formerly known as FAStT). Recently IBM and SAS team members tested SAS 9.1 at the IBM Beaverton Test Labs. SAS ETL Test Suite 1.4 was used for the test workload generator. The test environment hardware included a SAN attached IBM TotalStorage DS4400 and the IBM p5 eServer using AIX. In addition to the DS4400, most of the storage findings and layout recommendations can be applied toward any of the members of the IBM TotalStorage DS4000 family including the DS4100, DS4300, DS4400, DS4500, and DS4800.
The objectives achieved in this test effort included CPU sizing exercises, and storage disk layout validation/performance testing. Storage testing focused on filesystem configuration, host bus adapters quantity, and disk array placement. In addition, the team tested the DS4000 Storage Management physical disk array placement software algorithm and completed the TotalStorage Proven ™ certification testing for SAS 9 with the stated IBM hardware. During testing the initial DS4000 storage I/O parameters were documented and used as a performance baseline. The team changed DS4000 disk parameters and tested those changes with the same ETL Test Suite data comparing the results against the baseline test. This document focuses on some of the relevant application performance results along with DS4000 storage configuration recommendations based on the completed performance testing.
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