Hi SANshine,  For information on the interfamily upgrade check emc223786.  As a new family of Enginuity introduces new features, it is important that all hosts are checked for compliance with the new version.
Hello, I'd like to find out what's the difference between EMC in family microcode upgrade and out of family microcode upgrade on a DMX3/4 and V-Maxfrom one major code to another major code upgrade? i.e. from 5771 to 5773. I know it's done online, but can it be disruptive or none? Is there any impact on production hosts and DR hosts during in family and out of family upgrade?  Should the hosts be powerd down or no? How long does an upgrade take normally? What if something goes wrong, is it easy to back-out and revert to the previous code?  Any explanation and additional information will be helpful and appreciated. Thanks in advance.
Difference and impact between EMC "in and out of family" microcode upgrade