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Planning: MD3600f Series Storage Array Terms and Concepts 61
9
Select an appropriate directory.
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 to save the data to a
report form for viewing or printing.
•Use the
Comma Delimited Format
file type 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 MD PowerVault Support Matrix at
support.dell.com/manuals.
Table 4-3. Performance Monitor Table Description
Column Headings Description
Devices Controller, virtual disk or storage array total.
Total IOs Cumulative I/O’s per second from last start time.
Read Percentage Percentage of cumulative I/O’s that are reads.
Cache Hit Percentage Percentage of cumulative I/O’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 I/O’s per second (IOP = Input/output per
second or one completed I/O transaction).
Maximum IO/second Maximum recorded IOP from last start time.
book.book Page 61 Wednesday, June 8, 2011 5:01 PM