58 Planning: MD3200i Series Storage Array Terms and Concepts
10
Type a file name in the
File name
text box.
NOTE: The .perf extension is the default.
11
Select a file type from the Files of type list.
• Use the Report format (ASCII text) file type if you want to save the
data to a report form for viewing or printing.
• Use the Comma Delimited Format file type if you want to save the
data in a form that can be imported into a commercial spreadsheet
application for further analysis. Most leading commercial spreadsheet
applications recognize a comma delimiter. These applications use the
delimiter to import the data into spreadsheet cells.
12
Click
Save
.
The Performance Monitor data provides information about how your storage
array is performing. The data is presented in eight columns, which are
described in this table. Use this data to make performance tuning decisions
for your storage array.
For more information, see the online help topics.
Table 4-3. Performance Monitor Table Description
Column Headings Description
Devices Controller, virtual disk or storage array total.
Total IOs Cumulative IO’s per second from last start time.
Read Percentage Percentage of cumulative IO’s that are READs.
Cache Hit Percentage Percentage of cumulative IO’s that are in-cache.
Current KB/second Snapshot of throughput value per second (1KB
= 1024 bytes).
Maximum KB/second Maximum recorded throughput value from last
start time.
Current IO/second Snapshot of IO’s per second (IOP =
Input/output per second or one completed I/O
transaction).
Maximum IO/second Maximum recorded IOP from last start time.
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