Qlogic SANbox 5200 Series Manuallines Download Page 10

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Optimizing Performance When Designing Highly Scalable SAN Solutions:

Guidelines for SAN Architects

SPG-WP06004 SN0130924-00

Rev

Maximum Performance Configurations

By adding additional ISL trunks, higher remote traffic bandwidth can be supported between
switches, as indicated in the following table.

Total

Switches

Total 2Gb/4Gb

Device Ports

Available

Total

10Gb

ISLs

Topology Summary

4 64

Summary of Contents for SANbox 5200 Series

Page 1: ...ghly scalable SAN solutions allow your network traffic engineer to maximize overall performance and to minimize cost Key Findings By following simple network engineering guidelines SAN switch solution...

Page 2: ...further ISL connections between the switches to support more data bandwidth but this reduces the number of ports available to attach servers and storage This is the classic scalability versus perform...

Page 3: ...ust be considered Local and remote traffic are defined as follows Local traffic I O operations between servers and storage located on the same switch Remote traffic I O operations between servers and...

Page 4: ...for localized traffic and Rule B for remote ISL traffic for stackable switch and traditional fixed port solutions Example of Rule A Localized Traffic for Critical High Bandwidth I O Operations Followi...

Page 5: ...actual bandwidth capability is 12Gb sec can support about 75 of the theoretical traffic load to from the attached server and storage devices Due to the high capacity of these ISLs trunks stackable so...

Page 6: ...s can support only about 14 of the theoretical traffic load of each switch Max theoretical data traffic from devices is 14 ports x 4Gb sec x 2 full duplex 112 Gb sec Max theoretical capacity of ISLs t...

Page 7: ...ance as they scale due to the minimal number of ISL trunks available As discussed earlier the obvious solution of adding more ISL links reduces the number of ports available for server and storage dev...

Page 8: ...n choosing a topology design In general ideal best practices when connecting switches via inter switch links or trunks include the following A minimum of one link between every pair of switches to max...

Page 9: ...Guidelines for SAN Architects SPG WP06004 SN0130924 00 Rev A Baseline Configurations The following table shows the topology summary of three baseline configurations Total Switches Total 2Gb 4Gb Device...

Page 10: ...G WP06004 SN0130924 00 Rev A Maximum Performance Configurations By adding additional ISL trunks higher remote traffic bandwidth can be supported between switches as indicated in the following table To...

Page 11: ...s also preserve 2Gb 4Gb ports for connections to server and storage devices Switch Architecture Choice Architecture choice is a key factor in the network engineering equation Per the guidelines in the...