Most sites that use DL3 and DL4 also have mirrors. Look for a "Mirror" or "Server" selection dropdown on the download page. Often, the DL1 or DL2 servers are the "legacy" servers—they might be slower, but they are frequently more stable during maintenance windows. 2. Use a VPN (Virtual Private Network)
Let’s clear up a few myths:
Provide an estimated time of resolution (ETR) when the "data center work" is completed. Most sites that use DL3 and DL4 also have mirrors
Important Notice: Restricted Access to DL3 and DL4 Servers We are currently performing essential infrastructure upgrades at our data center. As a result, downloading from servers is temporarily restricted
Many software developers provide multiple download sources. If a DL3 or DL4 link is blocked, check the vendor's official website for alternative download options, such as: Direct cloud storage links (AWS S3, Google Cloud Storage) Official GitHub or GitLab release pages As a result, downloading from servers is temporarily
Scientific datasets, research papers, academic resources, and collaborative project files frequently reside on institutional data centers. A download restriction can delay research timelines, prevent data analysis, and hinder collaboration across institutions, especially when working with large datasets that cannot be easily replicated elsewhere.
Relying on ad-hoc workarounds introduces security risks and operational friction. Infrastructure and DevOps teams should implement structural solutions to handle restricted download paths natively. As a result
Users will be unable to retrieve files from these specific nodes during the maintenance period.
These servers frequently host unverified content. Downloading files from them can introduce malware, ransomware, or phishing scripts into a secure data center environment.