OUR CASES

RAID 5 Recovery – Healthcare Data Center Emergency

We are thrilled to share a recent success story showcasing our expertise in data recovery. Our commitment to excellence and advanced technology allowed us to successfully recover critical data for one of our valued clients.

Client Information:

  • Industry: Healthcare
  • Location: Atlanta, Georgia
  • Array Config: RAID 5 (6x 8TB Enterprise SAS HDDs)
  • Total Capacity: 40TB (32TB usable)
  • Use Case: Electronic Health Records and medical imaging
System Specifications:

Thecu The customer operated a critical healthcare data center serving 15 hospitals and 200+ clinics across the southeastern United States. The primary storage array featured:

  • Storage System: HPE MSA 2062 Storage Array
  • RAID Controller: HPE Smart Array P408i-a SR Gen10
  • Storage Devices: 6x HPE 8TB 12G SAS 7.2K Enterprise HDDs
  • File System: NTFS on Windows Server 2019 with ReFS for backup volumes
  • Applications: Epic EHR system, PACS medical imaging, laboratory information systems
  • Compliance Requirements: HIPAA, HITECH Act, state medical record retention laws
The RAID 5 configuration was chosen to balance storage efficiency with fault tolerance, providing protection against single drive failures while maximizing usable capacity for the organization’s growing medical data requirements. The system processed over 50,000 patient records daily and stored approximately 28TB of active medical data.
Failure Incident:

Cascading Failure: One drive failed overnight, and during the automatic rebuild process, a second drive began showing signs of imminent failure, creating a critical situation that threatened the entire RAID 5 array.

The array contained critical healthcare data including:

  • 18.5TB of Electronic Health Records for 2.3 million patients
  • 8.2TB of medical imaging data (X-rays, MRIs, CT scans)
  • 3.1TB of laboratory results and diagnostic reports
  • 2.2TB of system databases and application data

Technical Analysis:

Our emergency response team’s assessment revealed a complex failure scenario that threatened the entire RAID 5 array:
Drive Failure Analysis:
  • Drive 1 (Bay 1): Fully functional, containing data and parity blocks
  • Drive 2 (Bay 2): Fully functional, containing data and parity blocks
  • Drive 3 (Bay 3): Complete failure – head crash with extensive platter damage
  • Drive 4 (Bay 4): Fully functional, containing data and parity blocks
  • Drive 5 (Bay 5): Severe degradation with 1,247 pending sectors and increasing read timeouts
  • Drive 6 (Bay 6): Fully functional, containing data and parity blocks
RAID 5 Parity Analysis: The HPE Smart Array controller used a left-asymmetric parity distribution with 1MB stripe size. Our analysis revealed that Drive 5’s degrading sectors were scattered across multiple parity groups, meaning that losing this drive would result in unrecoverable data loss for numerous files throughout the array.
Critical Data Distribution: Medical imaging files, which averaged 50-200MB each, were particularly vulnerable as they spanned multiple stripes. A single corrupted stripe could render an entire medical image unreadable, potentially impacting patient diagnosis and treatment decisions.
Recovery Methodology:

Phase 1: Emergency Stabilization
Drive 5 Imaging: Our immediate priority was creating a complete image of the failing Drive 5 before it became completely unreadable. Using specialized hardware capable of handling marginal sectors, we performed a sector-by-sector clone while implementing aggressive error recovery techniques.
Read Error Mitigation: We employed multiple read attempts with varying read parameters to extract data from marginal sectors on Drive 5. This process took 18 hours but successfully recovered 99.2% of the drive’s data.
Array State Preservation: We prevented any further rebuild attempts that could have accelerated Drive 5’s failure, instead working with static images of all drives to perform offline reconstruction.

Phase 2:
Parity Reconstruction Analysis
Stripe Mapping: Our team developed a custom solution to create a complete map of data and parity block locations across all six drives.
Missing Data Calculation: For each unreadable sector on Drive 5, we calculated the corresponding data that could be reconstructed using the remaining drives’ data and parity information.
Parity Validation: We validated the integrity of parity blocks on the functional drives to ensure accurate reconstruction of missing data from Drive 5.

Phase 3: Medical Data Prioritization
Given the critical nature of healthcare data, we implemented a priority-based recovery approach:
Priority Level 1 – Active Patient Records: Current inpatient records and emergency department data needed for immediate patient care.
Priority Level 2 – Recent Imaging: Medical images from the past 30 days required for ongoing treatment decisions.
Priority Level 3 – Historical Records: Archived patient data needed for continuity of care and legal compliance.
Priority Level 4 – System Data: Application databases and configuration files needed for full system restoration.

Phase 4: Specialized Medical Data Recovery
DICOM Image Reconstruction: Medical imaging data stored in DICOM format required special handling to ensure image integrity. We validated each reconstructed image using DICOM compliance tools and medical imaging software.
EHR Database Integrity: The Epic EHR database required careful reconstruction of its complex relational structure. We worked with Epic-certified database administrators to validate data consistency and referential integrity.
Compliance Verification: All recovered data was verified against HIPAA audit requirements to ensure patient privacy protections remained intact throughout the recovery process.

Recovery Results

  • Data Recovery Success Rate: 99.8% (31.936TB of 32TB)
  • Critical Patient Records: 100% recovery
  • Medical Imaging: 99.9% with DICOM compliance
  • Business Impact: Switched to backup data center for business continuity

Client Impact:

The successful recovery had significant implications for healthcare operations:
IMMEDIATE OPERATIONAL IMPACT:
  • System Downtime: 40 hours
  • Service Disruption: Primary EHR and PACS systems offline during recovery
  • Emergency Activation: Disaster recovery plan activated with failover to backup data center
  • Workflow Changes: Temporary shift to paper-based processes for non-critical operations
PATIENT CARE IMPACT:
  • Emergency Care: Maintained through backup systems and local workstation caches
  • Elective Procedures: Rescheduled to later in the week (minimal patient impact due to weekend timing)
  • Non-Emergency Admissions: Temporarily diverted to partner facilities
  • Critical Patients: Full access to recent data through backup data center (4-hour sync lag)

Lost Data on Your Storage Device? Act Immediately!

If your are experiencing data loss, DO NOT attempt to force-rebuild RAID, reinitialize drives, or operate the system, as this can lead to irreversible data loss. Power down the device(s) immediately and keep the drives in their original slots/order. Contact our experts.

Contact us today for a free consultation!

404-312-6540

Or get your Free Online Quote Now