Disk I/O Monitoring

About Disk I/O Monitoring

Disk I/O monitoring allows you to monitor Read and Write operations of logical disks on your machine and set thresholds so that you get alerted if any of the below metrics reaches some critical level preset by you:

  • Reads/sec – the rate of read operations on the disk.
  • Writes/sec – the rate of write operations on the disk.
  • Queue length – the number of requests outstanding on the disk at the time the performance data is collected.
  • Busy time – the percentage of elapsed time that the selected disk drive was busy servicing read or write requests.
Note: for all types of Server/Device monitoring (see Server/Device Monitoring), you need to have Smart Agent downloaded, installed and running on your machine to configure the monitoring (see Downloading Agents and Installing Smart Agent for Windows and Linux).

 

Adding Disk I/O Monitoring

Adding Disk I/O Monitoring for Windows

Go to the Monitors menu, select Server/Device Monitors->Disk I/O and click Add.
Add_New_Disk_I_O_Monitor_

The Add Server/Device Monitor – Step 1 window will open.
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If you have already downloaded and installed Smart Agent for Windows, select it from the Agent list. Make sure that your Smart Agent for Windows is running, as shown under Agent Status. If the Agent is stopped, run it from the Smart Agent Controller window (see Downloading, Installing and Running Smart Agent for Windows). Agent_Key.png

If you haven’t downloaded Smart Agent for Windows yet, click on the Download Agent button to download it. Follow the instructions under Downloading, Installing and Running Smart Agent for Windows. Note that it may take up to 5 min for newly installed Agent to appear in the agent list (you can click Refresh to refresh the agent list).

Select the Windows Agent from the list, and click Next.

The Add Server/Device Monitor – Step 2 window will open.

Step_2.1_Windows_

Select from the Monitor Group combo box the monitor group for this monitor to be assigned to.

You can also create a new monitor group by clicking on the “+” icon next to Add Group.

Choose the logical disk from the combo box.
To add more Server-Device monitors of different types to the same Smart Agent, click the green “+” button under Add More Monitors (see Adding Multiple Server-Device and Application Monitors for the Same Agent).
DISK_I_O-Windows

Click Add when finished.

The Alert Configuration window will appear.
Alert_Configuration_

  • Click Send to All Contacts if you want to send alerts for this monitor to all contacts.
  • Click Custom Configuration (Advanced) to configure sending alerts for this monitor only to selected contacts. The Add Alert Rules window will open. Click on the Add Alert Rule button to configure alert rule(s) for your monitor.Set up the alert rule and click Add Rule. See Alert Rules in Alerts 2.0 for more info about alert rules.

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Note: To be able to add alert rules, you need to set up thresholds (Critical or Warning) in your monitor first.

A threshold includes two conditions connected by a logical OR. If any of the conditions matches the monitor will enter your specified state.

  • Check fails (response timed out, connection failure, etc)
  • Any or all of your selected metrics meet the failure conditions you specified for them

See Thresholds for more info.

  • Click Don’t Send Alerts if you don’t want any alerts for this monitor to be sent.

Your newly created Server-Device monitor will appear in your Monitis dashboard. Wait until it loads the first results.

 

Adding Disk I/O Monitoring for Linux

Go to the Monitors menu, select Server/Device Monitors->Disk I/O and click Add.

Add_New_Disk_I_O_Monitor_

The Add Server/Device Monitor – Step 1 window will open.
Add_CPU_Monitor_Step_1_Linux-new

If you have already downloaded and installed Smart Agent for Linux, select it from the Agent list.

Make sure that your Smart Agent for Linux is running, as shown under Agent Status. If the Agent is stopped, run it on your Linux machine (see Downloading, Installing and Running Smart Agent for Linux).

Status Monitoring Smart Agent

If you haven’t downloaded Smart Agent for Linux yet, click on the Download Agent button to download it. Follow the instructions under Downloading, Installing and Running Smart Agent for Linux.

Note that it may take up to 5 min for newly installed Agent to appear in the list (you can click Refresh to refresh the agent list).

Select the Linux Agent from the list, and click Next.

The Add Server/Device Monitor – Step 2 window will appear.
Step_2.1_Linux

Select from the Monitor Group combo box the monitor group for this monitor to be assigned to.

You can also create a new monitor group by clicking on the “+” icon next to Add Group.

Enter the logical disk name. To get a list of available partition names, run the following command on the server where your Smart Agent is installed: cat /proc/partitions | awk ‘{print $4}’
To add more Server-Device monitors of different types to the same Smart Agent, click the green “+” button under Add More Monitors (see Adding Multiple Server-Device and Application Monitors for the Same Agent).

DISK_I_O-Linux

Click Add when finished.

The Alert Configuration window will appear.
Alert_Configuration_

  • Click Send to All Contacts if you want to send alerts for this monitor to all contacts.
  • Click Custom Configuration (Advanced) to configure sending alerts for this monitor only to selected contacts. The Add Alert Rules window will open. Click on the Add Alert Rule button to configure alert rule(s) for your monitor.Set up the alert rule and click Add Rule. See Alert Rules in Alerts 2.0 for more info about alert rules.Scr_101.png

Note: To be able to add alert rules, you need to set up thresholds (Critical or Warning) in your monitor first.

A threshold includes two conditions connected by a logical OR. If any of the conditions matches the monitor will enter your specified state.

  • Check fails (response timed out, connection failure, etc)
  • Any or all of your selected metrics meet the failure conditions you specified for them

See Thresholds for more info.

  • Click Don’t Send Alerts if you don’t want any alerts for this monitor to be sent.

Your newly created Server-Device monitor will appear in your Monitis dashboard. Wait until it loads the first results.

Note: by default check frequency for Server/Device monitors is 5 min. You can upgrade your Server/Device monitors to run on 1 min frequency. See Check Frequency in Server/Device Monitors for more info.