These methods have to be defined before you can choose them. If your environment does not  have predefined methods see Figure 8-29. Note:  With IBM Storage Insights, you can only send emails. Figure 8-30 shows how to change the Frequency of the notification. You can choose here to  get more frequent notification for the Critical Threshold “15% Available Physical Space”. In  this example we choose to set the frequency to “every day”.  Figure 8-30 Alert Definition - Critical - change frequency Figure 8-29 Alert Definition 15% or less Available Physical Space - Critical 308  IBM FlashSystem 9200 and 9100 Best Practices and Performance Guidelines