I'd like to set up my VNX's to send up/down alerts via SNMP. I know how to create a notification template in Unisphere (System > Monitoring and Alerts > Notifications for Block > Notification Templates) but I don't know which event codes relate directly to data unavailability. So far, I've been checking the boxes for the following critical errors in the Basic Array Features category:

0x0A02

0x0A06

0x0A07

0x0A23

0x0A25

0x0A2E

However, these are only my best guess. Does anyone have better suggestions as to which event codes are useful for up/down alerting? Thank you!