Deleting SSD cache
To delete an SSD cache:
1
In the AMW, select the
Storage & Copy Services
tab.
2
In the tree view, select the
SSD cache
and do one of the following:
•
From the menu bar, select
Storage
>
SSD Cache
>
Delete.
•
Right click on the
SSD cache
and select
Delete
.
The
Confirm Delete SSD Cache
window is displayed.
3
Type
yes
to confirm and click
Delete
.
Using the performance modeling tool
The SSD Cache Performance Modeling tool helps you determine the performance improvement for SSD cache capacity when you run the
performance modeling tool with a workload that has the same characteristics as what you run in production. The tool provides an estimate
of performance using the following metrics: cache hit percentage and average response time. This tool shows actual performance for the
physical SSD cache that you created.
To run the performance modeling tool:
1
In the AMW, select the
Storage & Copy Services
tab.
2
To access the performance modeling tool, highlight the
SSD Cache
node in the logical tree view.
3
Do one of the following:
•
From the menu bar, select
Storage
>
SSD Cache
>
Run Performance Modeling.
•
Right click on the SSD cache and select
Run Performance Modeling
.
The
SSD Cache Performance Modeling
window is displayed.
4
Review the information in the
Modeling Information
area of the
SSD Cache Performance Modeling
window.
5
Select one of the following options from
View results
to choose the format you want to view the results:
•
Response Time
•
Cache Hit %
6
Click
Start
to run the performance modeling tool.
NOTE:
Depending on the cache capacity and workload, it may take about 10 to 20 hours to fully populate the cache. There
is valid information even after a run of a few minutes, but it takes a number of hours to obtain the most accurate
predictions.
NOTE:
While the performance modeling tool is running, a progress bar is displayed in the main area of the window. You can
close or minimize the window and the performance modeling continues to run. You can even close the MD Storage Manager
and the performance modeling session continues to run.
NOTE:
At the beginning of the ramp up time, the performance may be slower than if SSD cache was never enabled.
7
To save the results of a performance modeling session, click
Save As
and save the data to a .csv file.
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Using SSD cache
