Hello all! I need some advice here on external hardrive back up. My small business is going through a transition from pc to macs, it is taking longer than i hoped for due to funds and users learning the new format of OSX. Currently i run macs and pcs and we have to servers one of which runs Microsoft server or exchange... Before i started the switch everyone's computer backed up through the exchange server. I would like to continue something similar with the macs, keep in mind ounce we switch the office to macs will still use the exchange server since all our emails, calendars and out office will still rely on it. SO.... What is the best option for data back up wth my given circumstances, i was thinking using a drobo or similar device where i can freely take out and replace hardrives. I want the macs to have no problem finding these hard drives and same with the pcs. Should i have separate external hardrives for the macs and separate external hard drives for the pcs? I would love to be able to have all the macs use the time machine capabilities, any input is greatly appreciated.