Administrator Guide

2. Click the IO Usage tab.
3. Click one of the following buttons to change the period of IO usage data to display:
• Last Day: Displays the past 24 hours of IO usage data.
• Last 3 Days: Displays the past 72 hours of IO usage data.
• Last 5 Days: Displays the past 120 hours of IO usage data.
• Last Week: Displays the past 168 hours of IO usage data.
• Last Month: Displays IO usage data for the past month.
• Custom: Displays options that allow you to specify the start time and the end time of the IO usage data to display.
4. If you clicked Custom, perform the following tasks to specify the start time and end time of the IO usage data to display.
To specify the start time:
a) Select Other from the Start Time drop-down menu.
b) Select the start date of the time period to display from the date drop-down menu calendar.
c) Specify the start time of the time period in the time field.
To set the start time to the beginning of the day, select the Start of Day check box.
d) Click Update to display IO usage data using the specified start time.
To specify the end time:
a) Clear the Use Current check box.
b) Select the stop date of the time period to display from the date drop-down menu calendar.
c) Specify the stop time of the time period in the time field.
To set the stop time to the end of the day, select the End of Day check box.
d) Click Update to display IO usage data using the specified end time.
Display the Comparison View
Use the Comparison View to compare historical IO usage for storage objects.
Steps
1. Click the Storage view.
2. Select a Storage Center from the Storage pane.
3. Click IO Usage tab.
4. Click Select View on the IO Usage navigation pane.
5. Select Comparison View from the drop-down menu.
The options on the IO Usage navigation pane are replaced with Comparison View options.
6. Select the check boxes of the storage objects to compare from the IO Usage navigation pane.
NOTE: The Comparison View cannot compare more than 10 objects at one time.
7. Click Update.
The Total IO/Sec and Total MB/Sec charts appear by default and display the total IO usage for writes and reads, in IO/sec and
MB/Sec, for the selected storage objects.
8. Select the check boxes of additional charts to display:
NOTE: The charts that can be displayed depend on the storage objects that were selected in Step 6.
• Write IO/Sec: Displays writes, in IO/sec, for the selected storage objects in a single chart.
• Read IO/Sec: Displays reads, in IO/sec, for the selected storage objects in a single chart.
• Write MB/Sec: Displays writes, in MB/sec, for the selected storage objects in a single chart.
• Read MB/Sec: Displays reads, in MB/sec, for the selected storage objects in a single chart.
• Read Latency: Displays read latencies, in ms, for the selected storage objects in a single chart.
• Write Latency: Displays write latencies, in ms, for the selected storage objects in a single chart.
• Xfer Latency: Display data transfer latencies, in ms, for the selected servers or remote Storage Centers in a single chart.
• Avg IO Size: Displays average IO sizes for the selected storage objects in a single chart.
• IO Pending: Displays pending IOs for the selected storage objects in a single chart.
9. Click Update.
Viewing Storage Center Information
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