Where are file system changes first stored?

Your customer is looking for a storage solution that will be able to store seven million 3 MB files which are written and seldom accessed.
Read and write operations are both completed by a webbased application, which requires 1.3 Gbps throughput. The customer's network has not been upgraded in many years, so the network interfaces are
1 Gbps.
What would be the best solution for this network configuration?

Which SmartConnect policies are used for workloads that have short lived connections such as HTTP and FTP?

What must be configured on a PowerScale in order to store only the customer presentation PPT and PDF files on the cluster and the external repository?

A company currently has numerous file servers providing home directories for its employees. Some departments have their own file servers. All corporate users authenticate using Active Directory. The engineering department has their own untrusted AD domain for their file servers.
The company is looking for a consolidated solution that requires minimal changes to the environment, and that creates a single namespace for the home directories.
What is the recommended solution that will meet this company's requirements?