Hi Thomas,
as I'm about to do the same procedure, add the first MSA2050 SFF enclosure to a MSA 2040 SFF and would like to proceed doing it by hot adding it without downtime, I'd like to know if you did it this same way or you stopped one controller at a time then connecting it or just plugged first one channel then the other as suggested by the hp 2050 guide after the enclosure comes online (which is what I am more inclined to follow as this is the first added enclosure hence no possible interruption of online spanned data).
Thanks!