Server data recovery case of a hospital in Weifang
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Server data recovery case of a hospital in Weifang
Client Background: A top-tier hospital in Weifang City.
Disaster Scenario: A Lenovo (Inspur) server/storage unit, with 10TB x 12 drives configured as a RAID 5 array, experienced multiple drive failures, causing the hospital's PACS (Picture Archiving and Communication System) and imaging system to be unable to query patient case images. Restoration was needed in the shortest time possible.
Recovery Challenges:
The server was reporting errors with six drives offline.
Inspection revealed four were simply offline, but two had damaged read/write heads (signs of head-to-platter contact).
The client had attempted self-repair using online tutorials, further complicating the situation.
Recovery Process:
Diagnostic Assessment: Professional equipment tests revealed firmware area damage, requiring cloning and repair of the affected drives.
Firmware Repair: Located hard drives from the same production batch from a global spare parts inventory to extract healthy firmware information for transplantation and repair.
Bad Sector Handling: Discovered one drive had a large number of bad sectors. Professional equipment was used to skip physically damaged areas.
Logical Recovery: Reconstructed the file system structure, analyzed RAID parameters, and simulated RAID reconstruction in a data recovery environment to export all data.
Successful Outcome:
Recovered over 420,000 PACS images and files.
The majority of the images were recovered, with a 99.5% success rate.
Recovery time: 8 days (due to the need to repair the damaged hard drives).
Amount of data recovered: Approximately 80 TB.
