We have one IBM Ds4400 controller with 7 expansion enclosures. I want to do firmware update of this 4800 conttroller and enclosures as controller, enclosure, disks ...etc.
Now I need 3 answers,
1. Which firmware updates i must do on the this systems? I think I must do controller, enclosure, disks. Which else firmware updates i must do on the this systems?
2. What is the order during firmware update? Which firmware update must be firstly? What is the order?
3. Which backups i must get before I start firmware update?