Compatibllity Issues

If replacing some equipment and not all make sure the compatiblity issues are addressed on the front end before the order is given. Ask for referrals of like systems, including servers, file share devices, storage devices, telephone equipment, call support centers, data centers. Once the order is placed, the invoice sent and equipment installed it is too late to back track. Money is budgeted and finding enough to redo is expensive in many ways. No one knows it all and so often I know everyhing degrees are handed out with certain professions. People don't know, what they don't know and some think they know it all!