Server data recovery case
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Server data recovery case
Client Background: A well-known film and television visual effects (VFX) production company in Shanghai.
Disaster Scenario: A hard drive in a critical RAID-5 array within the company's core storage server suddenly suffered a physical failure, causing the array to crash. The affected drive contained:
Undelivered VFX project files and rendering assets for an international film production in progress.
A high-precision 3D model library and texture assets accumulated over six months.
Original shooting data backups for several important projects.
Source code for proprietary VFX plugins developed in-house.
Recovery Challenges:
Severe Physical Damage: The faulty hard drive had damaged read/write heads, with a risk of platter scratches, requiring operations in an ultra-clean cleanroom environment.
Complex Logical Data Structure: RAID information was lost, requiring precise reconstruction of array parameters and file system structures.
Large Data Volume with Strong Interdependencies: Project files were interdependent, requiring assurance of restored data completeness and usability.
Time-Sensitive Situation: Project delivery deadlines were imminent, with each day of delay potentially causing significant contractual breaches and reputational damage.
Recovery Process:
Emergency Assessment and Protection: Upon receiving the hard drive, an immediate physical inspection was conducted to assess the damage level, followed by transfer to a Class 100 cleanroom laboratory.
Physical Repair and Imaging: Matched read/write head components were replaced, and the platters were fully imaged using professional equipment to ensure zero secondary damage to the original media.
Logical Analysis and Reassembly: Analyzed the image files, reverse-engineered critical parameters of the original RAID-5 (such as disk order, block size, parity direction), and virtually rebuilt the array.
File System Parsing and Extraction: On the rebuilt virtual array, repaired the damaged file system metadata and extracted the data completely according to the directory structure.
Integrity Verification: The client's technical team performed tests by opening, linking, and partially rendering the recovered core project files to verify data validity.
Successful Outcome:
Physical Layer Recovery Success Rate: 100% completion of imaging for the faulty platters.
Logical Data Recovery Rate: Successfully recovered approximately 98.5% of the client's specified critical data.
Business Continuity Assurance: All project files for ongoing film VFX productions were completely restored, ensuring on-time project delivery.
Successfully recovered approximately 42TB of film production project and asset data.
Recovery Time: 4 days (from receiving the hard drive to delivering verified data)
Client Testimonial: "This hard drive disaster nearly caused half a year of hard work and our most important commercial contract to go to waste. The professionalism displayed by your team and the operations in the cleanroom environment were impressive. The recovered data was immediately usable, saving us from incalculable losses. Thank you so much."