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

Command Line User Interface 157
Command Line User Interface
Host Reads ARRAY
LUN
The total number of host read commands completed.
Usage
This metric is used as the basis to compute the Read Rate
metric. It can be used along with the Host Writes metric to
determine the read/write ratio characteristic of the
workload.
Host Writes ARRAY
LUN
The total number of host write commands completed.
Usage
This metric is used as the basis to compute the Write Rate
metric. It can be used along with the Host Reads metric to
determine the read/write ratio characteristic of the
workload.
Invalid CRC Count FRONTEND-
PORT,
BACKEND-
PORT
The number of frames received having an EOF indicating
valid frame contents but having an invalid CRC. Frames
ending with an EOF indicating invalid frames contents
(EOFa, EOFni, EOFdti) are not counted.
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 are available for VA 7410 only.
Invalid Transmission Word Count FRONTEND-
PORT,
BACKEND-
PORT
The number of invalid transmission words received.
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 are available for VA 7410 only.
Table 12 Performance Metrics (Continued)
Metric Categories Description/Usage