How can we fine-tune RAM utilization on a file server? This particular setup features a 5.0 TB hard disk drive alongside 64 GB of RAM. The typical file size being downloaded hovers around 600 MB. At present, only about 2% of the available RAM is being utilized.

To optimize RAM utilization on the file server, consider implementing a combination of caching and buffering strategies. First, configure the file server to use a caching mechanism, like Redis or Memcached, to store frequently accessed files in RAM. This will reduce the load on the hard disk drive and improve overall system performance.

Next, implement a RAM-based disk buffer, like RAMDisk, to store temporary files and reduce disk I/O operations. Finally, consider using a memory-intensive file system, like NTFS or XFS, to take full advantage of the available RAM. By implementing these strategies, the system administrator can potentially increase RAM utilization to 80% or more, improving overall system performance and reducing the load on the hard disk drive.

operating system is gonna store frequently accessed data in its buffer cache, so you don't have to wait for it to recall from disk storage. Now, if you want to see the system's resource utilization in real-time, I'd recommend firing up top - it's a nifty command-line utility that'll give you a snapshot of the system's memory usage, CPU load, and other vital stats.

Consider implementing a memory-intensive application such as a database or a content delivery network (CDN) that can take advantage of the available RAM. Additionally, configuring the file server to use a RAM-friendly file system such as ZFS or Btrfs can also help optimize performance.
Furthermore, using a load balancer to distribute traffic across multiple servers can help reduce the load on individual servers and improve overall system performance.