Where Are Chip Design Files Stored? Practices to Keep R&D Data Within the Internal Network

On the day auditors arrived, they asked the IT team of a chip company a seemingly simple question: “On which specific device are your design files stored?” The IT staff hesitated. Layout files were scattered across dozens of workstations and several NAS drives. No one could instantly state where each file resided and who had modified it. For chip enterprises, design layouts are their most critical assets. Yet the greatest risk lies in not knowing exactly where these core assets are locked away. Later, the auditors randomly opened a shared NAS and discovered outdated layout files from three years ago, still accessible to all staff. No one remembered these files existed, nor who retained access permissions.

I. Layout Files Are Core Assets and Must Stay On-Premises

Chip design layouts, simulation outputs and IP cores represent years of heavy R&D investment. Once leaked, the losses are irreversible. Keeping R&D data confined to the internal network is a non-negotiable security rule for chip firms: no uploading to public cloud services, no unauthorized external distribution, and no copying to personal devices. In practice, engineers often copy design files to personal laptops for overtime work or use third-party online storage for file transfer. These convenient habits create severe security risks.

A more hidden risk comes from ad-hoc sharing. To facilitate collaboration, some engineers share files in public chat groups or external collaboration platforms. Once shared, permissions are hard to revoke, and links may spread widely before the security team notices. Such outbound transfers usually lack approval workflows and audit trails. By the time the breach is discovered, design files may have been stored on external servers for a long time, making traceability and damage control extremely difficult.

II. Isolate R&D Network from Office and Guest Networks

To contain data inside the internal network, network segmentation is the foundation. AINOPOL’s all-optical network platform supports parallel operation of multiple service networks. The R&D network is separated from office and guest networks via independent VLANs. Guest Wi‑Fi terminals and office endpoints cannot reach the broadcast domain of the R&D VLAN. At the access layer, Dream Gateway enforces 802.1X authentication and MAC whitelisting, automatically isolating unauthorized terminals and blocking rogue access points. The R&D network functions like a secured room with access control: outsiders cannot enter, and internal users must follow formal procedures for any data export.

Isolation also extends to the physical layer. R&D zone switches use independent uplinks and do not share core switches with the office network, eliminating the risk of logical isolation being bypassed by misconfiguration. This directly answers auditors’ questions: where the files are hosted, who holds access rights, and how the network enforces protection. That is exactly what VLAN segmentation on the all-optical platform and 802.1X access control on Dream Gateway are designed to achieve.

III. Permission Control + Behavior Auditing + Encrypted Transmission

Controlling who can access what is critical after securing network entry.

• Within the R&D network, file permissions are assigned based on roles. Ordinary engineers can only access their assigned modules, while core libraries are restricted to designated authorized personnel.
• All access and file operations are logged by behavior auditing systems. Records show who opened a file, when the access occurred, and what content was copied.
• Cross-node transmission is protected by encryption. Ciphertext is transmitted over the network. Specific encryption algorithms are defined in the delivery contract and technical scheme and will not be elaborated here.

The bottom line: no unauthorized external distribution or public cloud upload. Cross-network collaboration must go through controlled jump servers or isolated data transfer zones, subject to approval and permission checks, instead of casual file copying. Behavior auditing is not only for post-incident investigation. It creates an audit trail for unusual export and outbound actions, discouraging unauthorized data leakage before it happens.

Built on all-optical infrastructure, audio & video engine and security shielding, AINOPOL delivers an integrated “connectivity & security” solution. The Dream Gateway consolidates routing, AC controller, firewall and OLT into one hardware unit. Logs and behavior records are stored locally without relying on external internet links. For chip companies with multiple sites and buildings, unified O&M management centrally governs all network devices. It supports visualized network topology, automatic policy rollout, one-click fault location, and remote troubleshooting for 80% of faults. Distributed R&D networks can be managed under a single pane of glass.

The answer to “where are chip design files stored?” should never be unclear. R&D network isolation, permission governance, behavior auditing and encrypted transmission together keep sensitive data within the internal network. Dream Gateway embeds this security baseline into hardware and daily operations, enabling centralized management across multiple sites.

FAQ

Q: How can engineers access design files for overtime work at home?
A: Authorized remote access is available for company-owned terminals with granular permissions. Design files must not be downloaded to personal devices. The exact access method and approval workflow follow the enterprise’s internal security policy.
Q: Will behavior auditing slow down R&D progress?
A: Auditing only records operation traces instead of blocking normal development workflows. File reading and compilation remain unaffected. Alerts are triggered only for abnormal export and outbound attempts, subject to the final solution design and acceptance criteria.
Q: How to handle leftover design files stored on old NAS devices?
A: Sort out asset inventories, revoke over-broad permissions, and archive or securely delete orphaned files. Permission and retention policies are formulated according to the enterprise’s data governance framework.