Dell EqualLogic PS6210XS EqualLogic Group Manager Administrator s Guide PS Ser - Page 332

• Check your PS Series group capacity A key component of the health of your PS Series group is capacity. To fully understand the capacity for new applications or support the growth of existing servers, you must examine the overall group and pool capacity, storage utilization statistics, thinprovisioned space, and space used for replication. To ensure a healthy SAN, it is important to detect any sudden or unexpected changes in capacity utilization. • Determine overloaded SAN resources When high latency cannot be attributed to incorrect configuration of the storage environment, the SAN resources might be overloaded. Use SAN Headquarters to help make this determination. SAN Headquarters can identify random IOPS, network performance, storage pool capacity, iSCSI connections, MPIO connections, and other indicators. Figure 37. Process for Analyzing Data shows the process for analyzing data. Figure 37. Process for Analyzing Data To analyze your data, you should also understand the following concepts: • How group data is compressed and therefore how it might be less precise as it ages. For information, see the Dell EqualLogic SAN Headquarters Installation and User's Guide. • Basic performance terminology and the type of data collected. • The areas in your environment that can be sources of performance problems and which areas the monitoring tools look at. • How your applications use group storage resources. Best Practices for Managing Storage Performance As a general best practice, focus on issues elevated from your user environment. Users might have the following complaints: • Response time is too slow. • An action takes too long to complete. • An action did not finish on time. Follow these guidelines to analyze the performance problem: 332 About Monitoring