Dell EqualLogic PS6210XS EqualLogic Group Manager Administrator s Guide PS Ser - Page 220
Diagnose and Resolve NAS Cluster and PS Series Issues, NAS Cluster Diagnostics
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15 Diagnose and Resolve NAS Cluster and PS Series Issues If you have to work with Dell support to resolve an issue related to a PS Series array or a NAS cluster, you can provide the support team with necessary data to facilitate successful troubleshooting of the issue without having to install software or download tools from the Dell support site. You can send the report from an alternate system and be certain that the data collected from your server is not viewable by nonauthorized individuals during the transmission to Dell support. NAS Cluster Diagnostics To diagnose and solve a problem on a NAS cluster, you must first determine if the problem is hardware- or software-related. It is important to replace failed hardware as soon as possible. If a controller that is part of an intact NAS controller pair becomes unavailable (for example, if the controller has no power, has failed, or is disconnected from the network), the controller pair is degraded. Although the NAS cluster is still operational, you cannot perform most service modifications until you detach the failed controller from the controller pair. It is important to determine if the problem resides in the PS series group, the NAS controllers, the network configuration, or the client configuration. The following tasks are useful: • Review the PS Series group event log, which contains events related to a NAS cluster, including the service itself, the NAS controllers, NAS containers, SMB shares, and NFS exports. • Be aware of the NAS cluster alarms, which help you to identify and correct problems before any operations are affected. • Contact Dell support for assistance in running and interpreting online or offline diagnostics, which can provide valuable information. About Current and Past NAS Network Performance Statistics You can use network performance statistics to help with: • Evaluating bottlenecks • Troubleshooting • Scheduling maintenance • Monitoring performance You can gather current and past network performance statistics by using the CLI. Statistics are available in the following categories: 1. Cluster Network 2. Controller Network 3. Controller Load-Balancing (provides data that is a summary of all available statistics) For each category of statistics, you can choose from the following time periods: 1. Current - Data is shown for a one-time interval. 220 Diagnose and Resolve NAS Cluster and PS Series Issues