Ibm DS8000 Bedienungsanleitung PDF herunterladen (Seite 300)

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278 DS8000 Series: Concepts and Architecture

12.6 Summary

This high performance processor complex configuration is the base for a maximum of host I/O

operations per second. The DS8000 Model 921 dual 2-way complex can handle an I/O rate of

what about three to four ESS 800s can deliver at maximum speed. This allows you to

consolidate three to four ESS 800s into a DS8100. As we saw before, the DS8000 series

scales very well and in a linear fashion. Moving on from a 921 dual 2-way processor complex

to a 922 dual 4-way processor complex not only doubles the number of POWER5

processors, but also doubles the performance. A properly configured DS8300 allows the

same maximum number of host I/O operations per second as what up to six to eight ESS

800s provide.

With the introduction of the smart, switch-based Fibre Channel disk back end to overcome

the FC-AL arbitration overhead, the DS8000 provides a comprehensive technology and an

unmatched architecture to fulfill very demanding performance requirements, and it provides

the highest RAS standards in the industry. This goes along with the 2 Gbps Fibre Channel

device adapters (DA). The stage is set for a new record of aggregated bandwidth and I/O

rates to the DS8000 high performance disk storage server family. A very promising road map

guarantees a bright future for the DS8000 series.

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