My current single uplink from 2-stacked switches to ASA is not enough to cater the link utilization (upload traffic from the 2-stacked switches to ASA). So, I have thought of using 2 uplinks. If I use Etherchannel for the 2-uplinks, then only one link will run in case that one link down instead of failover to standby ASA using 2 standby-uplinks.
Please advise if there is better way of using the 2 uplinks to each ASA and failover to standby ASA in case that one uplink is down.
Please refer the current and new planned diagrams below.