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Table 8-4 shows the possible alert severities. 

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In this example, we created three thresholds: 

GLYPH<SM590000> Critical (15% space in the RAID Array left) 

GLYPH<SM590000> Warning (20% space in the RAID Array left) 

GLYPH<SM590000> Information (30% space in the RAID Array left) 

Adjust the percentage levels to the required levels as needed. Keep in mind that the process to extend storage might take its time (ordering process, installation, provisioning, and so on). 

The advantage of this way to setup an Alert Policy  is, that you can add various IBM FlashSystem 9100 (or even other storage subsystem such as the IBM FlashSystem 900) to this customized alert. 

Figure 8-23 shows how to start creating a new Alert Policy which monitors the remaining free capacity in the RAID Array. The customized Alert is not tied to the Data Reduction Pool, as it works regardless of the pool type. 

<img src='content_image/1000955.jpg'>

In the following example we create a new Alert Policy by copying the existing one. You might change an existing Alert Policy (in our example the Default Policy) as well. Keep in mind, a storage subsystem can be active in only one Alert Policy. 

