Check version and feature supported
https://kb.juniper.net/InfoCenter/index?page=content&id=KB17946&actp=METADATA
ICCU ( on SRX3xx and SRX5xx and SRX1500)
Drop in traffic (30 seconds approximately)
Loss of security flow sessions
https://kb.juniper.net/InfoCenter/index?page=content&id=KB17946&actp=METADATA
Drop in traffic (30 seconds approximately)
Loss of security flow sessions