Release Notes

3 Analyzing Dell PS Series Storage with SAN Headquarters | TR1050
Table of contents
Revisions ............................................................................................................................................................................................... 2
Executive summary .............................................................................................................................................................................. 5
Acknowledgements .............................................................................................................................................................................. 5
1 SAN Headquarters overview ......................................................................................................................................................... 6
1.1 SAN HQ architecture .......................................................................................................................................................... 8
1.2 SupportAssist architecture ................................................................................................................................................. 9
1.2.1 How SupportAssist Works .................................................................................................................................................. 9
1.3 Information provided by SAN HQ ..................................................................................................................................... 11
1.3.1 All Groups Summaries ...................................................................................................................................................... 11
1.3.2 Group information ............................................................................................................................................................ 12
1.4 Exporting data .................................................................................................................................................................. 12
1.5 Archiving data ................................................................................................................................................................... 12
1.5.1 Importing data .................................................................................................................................................................. 13
2 Using SAN HQ to find performance bottlenecks ......................................................................................................................... 14
2.1 General performance considerations ............................................................................................................................... 14
2.2 Understand the PS Series scope of monitoring ................................................................................................................ 15
2.3 Performance analysis goals .............................................................................................................................................. 16
2.4 Performance analysis overview ........................................................................................................................................ 17
2.4.1 Hardware considerations ................................................................................................................................................. 17
2.4.2 Network considerations ................................................................................................................................................... 17
2.4.3 Servers .............................................................................................................................................................................. 18
2.4.4 Tuning considerations ...................................................................................................................................................... 18
2.5 SAN HQ GUI navigation technique ................................................................................................................................... 18
2.5.1 SAN HQ poll periods and I/O metrics averages ................................................................................................................ 19
3 Troubleshooting examples .......................................................................................................................................................... 22
3.1 Example 1: Over utilized pool ........................................................................................................................................... 22
3.1.1 Example 1: Before ............................................................................................................................................................ 23
3.1.2 Example 1: Analysis of volumes to move ......................................................................................................................... 30
3.1.3 Example 1: After volumes are moved .............................................................................................................................. 33
3.1.4 Example 1: After merging pools ....................................................................................................................................... 37
3.2 Example 2: Performance planning.................................................................................................................................... 39