Chapter 16.3.1. Performance scaling of I/O Groups
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Chapter 16. SVC 4.2 performance highlights 289 16.3.1 Performance scaling of I/ O Groups We turn now to a discussion of the SVC’s capability to scale up to very high levels of I/ O demand. This section focuses on database I/ O demands, which are reflected by the OLTP workload; the following section then examines SVC scalability for sequential demands. Figure 16- 6 shows the SPC- 1type performance delivered by two, four, six, or eight SVC nodes. The OLTP workload is handled by 1536 15K RPM disks configured as RAID 10. The host connectivity was through 32 Fibre Channels. Figure 16- 6 OLTP workload performance with two, four, six, or eight nodes Figure 16- 7 on page 290 presents the database ...
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