Which option should be implemented on a file server to restrict storage growth?

Implementing disk quotas on a file server is an effective way to restrict storage growth. Disk quotas allow administrators to set limits on the amount of disk space that individual users or groups can consume. This management tool helps ensure that no single user can monopolize storage resources, which could lead to issues such as performance degradation or insufficient space for other users and applications.

By establishing these limits, administrators can better control the allocation of storage and encourage users to manage their data more efficiently. Disk quotas can also help in planning for future storage needs and identifying users who may require additional space or may be in need of data cleanup.

The other options, while beneficial in their own right, do not directly address the need to limit storage growth in the same manner. Disk compression reduces the amount of disk space that files occupy but does not prevent users from accumulating files to fill the available space. Automatic usage reports provide insights into how space is being used but do not impose any restrictions. Automatic defragmentation optimizes storage performance but has no impact on the total amount of storage consumed.