Virtual machine disaster on cross-border e-commerce platform -- data recovery

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Jan-16,2026

Virtual machine disaster on cross-border e-commerce platform -- data recovery


Client Background: A cross-border e-commerce company in Yantai.

Disaster Scenario: A storage array failure in the VMware virtual machine cluster hosting the core business system led to:

  • 15 critical business virtual machines being unable to start.

  • Complete paralysis of the order processing system.

  • Severe damage to the user database.

  • The ongoing "Double 11" promotional campaign being forced to halt.

Recovery Challenges:

  • Broken virtual machine snapshot chains, with multiple incremental files corrupted.

  • The storage array used RAID 6, but four hard drives had varying degrees of issues.

  • Corrupted database transaction logs, requiring precise point-in-time recovery.

  • Intense pressure from business interruption, with hourly losses reaching tens of thousands of RMB.

Recovery Process:

  1. Array Emergency Repair: First addressed the storage array hardware issues to ensure foundational data stability.

  2. Snapshot Chain Reconstruction: Analyzed VMware snapshot metadata to reconstruct complete virtual machine state chains.

  3. Database Log Analysis: Used database log mining techniques to restore data to the last consistent state.

  4. Business Verification: Maintained continuous communication with the client's technical team during recovery to ensure business logic correctness.

  5. Smooth Transition: Developed a detailed data cutover plan to minimize business interruption time.

Successful Outcome:

  • All 15 virtual machines were 100% recovered and functioning normally.

  • Zero loss of order data, with complete retention of user data.

  • Total recovery time from receiving the request to full business resumption was only 52 hours.

  • Helped the client avoid economic losses exceeding 3 million RMB.

Recovery Time: 2.5 days
Data Recovered: Approximately 12TB

Client Feedback: "In the darkest hour of complete business paralysis, Datech was our light. They not only restored the data but also restored our team's confidence and our customers' trust."



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