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When troubleshooting a pool that is not working correctly after adding new members, the 'Slow Ramp Time' setting is a primary suspect. In a pool that is already under high load and using a 'Least Connections' load balancing method, a newly added server has zero connections. Without a slow ramp time, the BIG-IP will immediately direct a massive flood of new connections to the new server to 'balance' it with the others. This 'thundering herd' effect can crash a newly initialized application server before it has time to warm up its caches or establish its own database connections. By setting a 'Slow Ramp Time' (typically in seconds), the administrator ensures the BIG-IP gradually increases the connection ratio to the new member. This allows the server to stabilize and scale up its performance over time. If users report intermittent failures specifically coinciding with the expansion of a pool, checking this setting is a vital troubleshooting step to maintain pool health during maintenance.