I have an exchange5.5 with 4G hardisk. Now, I bought 2 new 9G hardisk and a raid card. I would like to move the old exchange5.5 from the old 4G to the 2 new 9G. Should I use mirror with the 2 new 9G or raid5 with the 2 9G and 4G?
Besides, I can bear down time. Any good suggestion for this migration? how long will be the down time?
Thx
