Disk usage

The disk usage Monitor allows you to identify when the workload of the server becomes too intensive for the current disk I/O capabilities. This is a critical issue for database management systems, that use MySQL. Response times of a MySQL server can decrease greatly if disk I/O becomes a bottleneck. You must ensure that data is distributed over multiple disks in such a way that their usage is low and can handle sudden bursts of activity. You can also configure disk striping, which divides data into blocks and automatically spreads those blocks over multiple disks.

Adding a disk usage monitor

1. On the Component page, click Add/Remove Monitors > Add Custom Monitor.
2. Select the Local Resources Monitors tab and Hardware sub tab view.
3. Select Disk Usage Monitor and click Next.
4. Select a period of time from the Monitor Period drop-down menu.
5. Select the agents (servers) from the list.
6. Click Next.
7. Choose the Drive / Mount point from the list.
8. Under the host disk usage threshold, set the appropriate values for an Error threshold and Warning threshold.
9. Enter a Monitor Name and set consecutive measurements.
10. Click Next.
11. On the Monitor test result step, click Next when the test is passed.
12. Click Finish.

1. From the Infrastructure view page, click "+" Components.
2. Select the Server component and click Next.
3. Select the agent (server) from the list and click Next.
4. Click Finish.
5. On Manage Component Monitors page select Disk usage slider.
6. [Optional] Change the monitor Name.
7. [Optional] Change the default value for refreshing intervals (min).
8. Enter the appropriate threshold values, under Warning and Error.
9. Go to Monitor Status Change Rule and specify the number of consecutive measurements needed to change the monitor status.
10. Click OK.