# Setting Patrol Read Properties

Perform the following steps to set the patrol read properties.

1. In the Controller dashboard, select More Actions > Set Patrol Read Properties.
   The Available Virtual Drives dialog appears.
2. Select the virtual drives for which you want to set the patrol read properties, and click Add Virtual Drives.
   The Set Patrol Read Properties dialog appears.
3. Click Select Virtual Drives.

   Click the icon to remove the virtual drives that you have already added.

4. Click Next.
5. Perform the following steps to set the properties:
   1. Select an operation mode for patrol read from the Set Patrol Read Mode drop-down list. The options follow:
      - Automatic – The patrol read operation runs automatically at the time interval you specify.
      - Manual – The patrol read operation runs only when you manually start it by selecting Start Patrol Read from the Controller dashboard.
      - Disable – The patrol read operation does not run.
   2. (Optional) Specify a maximum count of drives to include in the patrol read concurrently.
      The count must be a number from 1 to the maximum number of configurable physical devices.
   3. Select the frequency at which the patrol read operation runs from the drop-down list.
      The default frequency is Weekly (168 hours), which is suitable for most configurations.
      The other options are Hourly, Daily, and Monthly.
   4. Select the month, day, and year on which to start the patrol read.
   5. Select the time of day to start the patrol read.
   6. (Optional) Select the Start Patrol Read Now check box.
6. Click Finish.
   You can monitor the progress of the Patrol Read operation. See Background Operations Support.

Parent topic: Running Patrol Read