When you click [Performance] - [Start] in [Action] pane in Express Web GUI, an instruction to collect performance information is issued to the performance management device, and the performance management device collects performance information of a disk storage system through the LAN and saves it as performance data. Since the performance management device is started as a daemon of the Express Manager server, it continues collecting performance information while the Express Manager server is active, even if no Express Web GUI window is displayed.
The logical configuration of the disk storage device is recognized, and the collecting of performance information starts. At the start of collecting performance information of the selected storage system, an amount of time (tens of seconds to several minutes) is spent to collect the logical configuration before any performance information is actually obtained.
When performance monitoring starts, "Monitoring" is displayed in "Perf. Data" as a status of the performance monitoring.
The table below lists values of "Perf. Data" row and their corresponding statuses and actions to be taken. The values may differ from that of the current status. Select [Disk Array] - [Reload Conf] in [Action] pane in Express Web GUI to check the latest status.
Value of "Perf. Data" row | Status | Appropriate action |
|---|---|---|
Monitoring | Performance is being monitored. (Normal) | Performance is being monitored. |
Recovering | Performance monitoring is being recovered (e.g. device time-out). | The Express manager server cannot communicate with a disk storage system. Check the network status and the disk storage status. Log off, when ETERNUS Web GUI is in a login state. |
Error | Performance monitoring error (e.g. device time-out, writing to the performance information file failed.) | The Express manager server cannot communicate with a disk storage system. Check the network status and the disk storage system status. Log off, when ETERNUS Web GUI is in a login state. Check the write permission to the file and the capacity of the file system. Then, select [Performance] - [Stop] in [Action] pane in Express Web GUI. |
Stop | Performance monitoring has stopped. (Normal) | Performance monitoring has stopped. |
