Setting up and tuning the SUT

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This topic describes the multiple ECM node clustered setup of the SUT. The Part 1 white paper described a single ECM node setup. This Part 2 white paper of the case study describes a clustered setup with WAS and Spectrum Scale.

The setup and tuning applied to the SUT was described in detail in the Part 1 white paper. Since the Part 2 white paper uses the same basic tuning that was used for Part 1, you should refer to the Part 1 white paper IBM Enterprise Content Management for Linux on z Systems, Scale-Out Case Study (Part 1): Single ECM Node with XFS and IBM Spectrum Scale 4.2 for details.

The setup tuning covered these main programs:

z/VM
Linux for z Systems
WebSphere Application Server
ECM software components
DB2
Spectrum Scale

Table 1 lists the components that were tuned.

Table 1. Setup tuning used for Part 1 and Part 2 white papers
Program	Components that were tuned
z/VM	Virtual Networking HyperPAV
Linux on z Systems	Networking HyperPAV FCP Hardware Data Router Support Device Mapper-Multipathing Linux kernel parameter
ECM software tuning	IHS gateway tuning common WAS tuning WAS JVM tuning ECM database server tuning
ECM database server	workload type database configuration database indexes
Spectrum Scale	`pagepool` size `maxFilesToCache` `maxStatCache` `blocksize` Inodes