You manage an NLB cluster composed of three servers: Server1, Server2 and Server3. Your maintenance schedule indicates that Server1 is due for cleaning maintenance, which involves vacuuming dust and reseating all components. The NLB cluster is in constant use, so you don't want to interrupt any clients currently being served by Server1. Which option should you use to take Server1 temporarily offline yet allow it to complete active client requests?

Drainstop

Explanation:

When the stop command is used through Network Load Balancing or NLB manager, it interrupts all client connection in progress on that server. However, the drainstop command does not interrupt any active connection on the server, but instead allow the host to service active connection, but ensures that all new traffic are disabled from the host or server. From the question, since the aim is not to interrupt the any clients currently being served by Server 1, the drainstop command is the ideal command.

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