Degraded performance that occurs only during business hours strongly suggests network congestion caused by simultaneous data and voice traffic. Combining voice (VoIP) and data traffic on the same network without proper segmentation can lead to latency, jitter, and packet loss, especially during peak usage periods.
Implementing VLANs (Virtual Local Area Networks) allows administrators to logically separate voice and data traffic, enabling better traffic management and prioritization. VLANs also support Quality of Service (QoS) policies that ensure time-sensitive voice traffic is prioritized over standard data traffic, improving call quality and overall performance.

If users can access local network resources but not the internet, the most likely culprit is a misconfigured or missing default gateway. The default gateway routes traffic from the local network to external networks (i.e., the internet). If it's not properly set or was altered during a firewall update, internet traffic won't be forwarded correctly.

The system has a valid IPv4 address and subnet mask and can access internal resources, which confirms local network connectivity is working. The absence of a default gateway indicates incorrect next hop information, preventing traffic from being routed to external networks such as the internet.

A hybrid environment combines on-premises infrastructure with cloud-based resources, allowing virtual machines to run in both locations while operating as a single integrated environment.

When replacing storage, the first consideration is the form factor, as it determines physical compatibility with the device (e.g., 2.5-inch, 3.5-inch, M.2). Once the correct form factor is ensured, other specifications such as interface type and performance can then be evaluated.