We have a 6500 switch that currently has two 3000w PS and we would like to upgrade both to 6000w. Has anyone done this before and was there any impact. If we replace the first 3000w first and replace it with 6000w PS, will this cause any problems since one is running 3000w and the other is 6000w? Another concern is if assuming different watts of PS works, will it failover to 6000w once the last 3000w PS is pulled out? Any reply is highly appreciated. Thanks.