HP StorageWorks Command View SDM Installation and User Guide (T1086-96023, February 2005)

Command Line User Interface 165
Command Line User Interface
Relative values of metrics Possible scenarios
Invocations Relocations
High High The array has idle time available for optimization and optimization is
occurring.
High Low The array has enough idle time to allow the optimize policy to be invoked
but not enough idle time to allow optimization work to make progress.
The optimization work is being pre-empted to service the host workload or
to run a higher priority policy like make space or rebuild.
High Low The array has enough idle time to allow the optimize policy to be invoked
but there is no optimization work to do. The array is already fully optimized.
Low Low The array has idle time available for optimization and optimization
is occurring but the optimize policy is spending a relatively large amount of
time searching for optimization work to do.
Low Low The array is so busy that the optimize policy is not being invoked very often.
Low High The array has idle time available for optimization and optimization is
occurring. Each invocation of the optimize policy is resulting in a relatively
large amount of optimization work being accomplished. The amount of
optimization work is preventing the optimize policy from being invoked more
frequently.
Port-A Loss of Sync Count DISK-PORTS Number of short (< 100 msecs) Loss of Synchronization
conditions that have occurred on Port A.
Usage
Each of the port error counters provides a general
indication of the quality of port operation. Any significant
counts in any of the port error counters is an indication
that port or link operational quality may be having an
effect on performance.
Port-A Invalid Transmission Word
Count
DISK-PORTS Count of the number of invalid transmission words/
Running Disparity errors that have been detected on Port
A
Usage
Each of the port error counters provides a general
indication of the quality of port operation. Any significant
counts in any of the port error counters is an indication
that port or link operational quality may be having an
effect on performance.
Table 12 Performance Metrics (Continued)
Metric Categories Description/Usage