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

Command Line User Interface 159
Command Line User Interface
Logical Blocks Written Rate (1.05
release)
Logical Blocks Written Throughput
(prior to 1.05)
ARRAY
LUN
The average number of logical blocks transferred per
second by write commands.
Usage
This metric is a measure of the performance level being
achieved for writes and also provides some indication of
the demand level of the host workload. High write rate will
not be achieved when the workload demand is low.
Loss of Signal Count FRONTEND-
PORT,
BACKEND-
PORT
The number of times a loss of signal was detected.
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.
Compatibility
FRONTEND-PORT metrics are available for all products.
BACKEND-PORT metrics are available for VA 7410 only.
Loss of Sync Count FRONTEND-
PORT,
BACKEND-
PORT
The number of times a loss of synchronization was
detected.
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.
Compatibility
FRONTEND-PORT metrics are available for all products.
BACKEND-PORT metrics are available for VA 7410 only.
Table 12 Performance Metrics (Continued)
Metric Categories Description/Usage