Scenario: You are tasked with deploying a stateful workload on Google Cloud. The workload must be capable of horizontal scaling while ensuring that each instance can read and write to the same POSIX filesystem. Additionally, the stateful workload should be able to handle up to 100 MB/s of writes during high load. Question: What steps should be taken to meet the requirements of deploying a stateful workload on Google Cloud that can scale horizontally and support up to 100 MB/s of writes, while ensuring that each instance can read and write to the same POSIX filesystem?