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Table of Contents
Table of Contents......................................................................................................................................iii
Table of Figures ........................................................................................................................................vii
Table of Tables ........................................................................................................................................viii
Chapter 1 – Introduction________________________________________________________________1
The Only Switched-Fabric Storage Architecture in the World....................................................................1
Lightning 9900 Series Product Offerings....................................................................................................1
An Overview of the Hitachi Lightning 9900 Series Architecture................................................................2
Comparison to the Shared Bus Architecture of the Hitachi Freedom Storage 7700E..................................4
The Lightning 9900 has an advanced availability profile compared to competitive products......................4
Other Information Sources Available from Hitachi Data Systems ..............................................................5
Chapter 2 – The Lightning 9900 Series Packaging____________________________________________7
Model 9960 Packaging ..............................................................................................................................7
Model 9960 Control Frame........................................................................................................................7
Model 9960 Array Frames ..........................................................................................................................8
Model 9910 Packaging ..............................................................................................................................9
The System Monitoring Network of the Lightning 9900 Series ..............................................................10
Chapter 3 – Front-end Design of the Hitachi Lightning 9900 Series ____________________________11
CHIPs Support Fibre Channel Host and ESCON Host Connectivity and Scalability..............................11
About the Fibre Channel Interface Boards................................................................................................12
Bandwidth of Supported Host Interfaces..................................................................................................14
Number of Host Interfaces Supported......................................................................................................14
Types of Hosts Supported by Direct Fibre Channel Host Attachment by the Lightning 9900 Series........14
Chapter 4 – Hi-Star Architecture – An Internal Switched Hierarchial Star Network ______________15
The Internal Hi-Star Architecture ............................................................................................................15
The Cache Hierarchical Star Network ......................................................................................................15
The Cache Switch Provides Non-blocking Switched Access to Cache ......................................................16
The Path Bandwidth Between the CSW and CHIPs or ACPs is 6.4GB/sec ............................................16
The Path Bandwidth Between the CSW and the Cache Adapter (CAs) is 3.2GB/sec ..............................16
Advantages of a Switched Architecture Compared to a Shared Bus Architecture ......................................16
The 9960 Provides 32 GB of Fully Addressable Cache ............................................................................18
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