Hitachi MK-96RD617-08 - Manual (Page 236)

8-2 Troubleshooting
Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User’s Guide
Troubleshooting Performance Monitor
• When the WWN of a host bus adapter is displayed in red in the tree of the
WWN tab:
The host bus adapter (HBA) whose WWN is displayed in red is connected to
two or more ports, but the traffic between the HBA and some of the ports
are not monitored by Performance Monitor. When many-to-many
connections are established between HBAs and ports, you should make
sure that all the traffic between HBAs and ports is monitored. For details on
the measures, see Monitoring All Traffic between HBAs and Ports.
• When a part of monitoring data is missing:
While displaying Performance Monitor in short range, if I/O workloads
between hosts and the storage system become heavy, the storage system
gives higher priority to I/O processing than monitoring processing. If you
notice that frequently monitoring data is missing, use the Gathering
Interval option located in the Monitoring Options window to change to a
longer collection interval. For details, see Start Monitoring and Monitoring
Options Window.
Note: The display of the LDEV tab, Port-LUN tab, and WWN tab is fixed
to in short range.
• Although Monitoring Switch is set to Enable, the monitoring data is not
updated:
Because the time setting of SVP is changed, the monitoring data might not
be updated. Set Monitoring Switch to Disable, and set Monitoring
Switch to Enable again.