Field Data Backup & Recovery Protocol: Never Lose a Day's Survey

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Protocol Sections

A single hard drive failure, an accidental deletion, or a ransomware attack can wipe out weeks of expensive survey data. A disciplined backup routine is not an IT luxury—it's a core field responsibility. This protocol outlines a minimal, fail-safe system for protecting your data.

1. The 3-2-1 Backup Rule (Adapted for Field)

The industry-standard 3-2-1 rule is the foundation. For field use, we adapt it to available resources.

📋 Field 3-2-1 Strategy

• 3 Copies: Primary working copy + Two backups.
• 2 Different Media: e.g., Laptop SSD + External HDD/SSD.
• 1 Copy Off-Site: Cloud upload (if internet allows) OR physically separate drive kept on the support boat/office.

2. Daily Field Backup Routine

This sequence should be performed at the end of every survey day, without exception.

⏱️ End-of-Day Checklist

• Stop all acquisition software and close files properly.
• Copy the entire day's raw data folder to External Drive A (Primary Backup).
• Copy the same data to External Drive B (Secondary Backup).
• Verify file sizes and counts match the original.
• Store Drive B in a separate, secure location (e.g., support vessel, site office safe).

⚠️ Critical Rule: Never connect both backup drives simultaneously except during the copy process. This mitigates ransomware or electrical surge risk.

3. Cloud Backup (When Possible)

For vessels with satellite internet (Starlink, VSAT), cloud backup provides the ultimate off-site protection.

☁️ Cloud Backup Tips

• Use Selective Sync: Only upload critical processed files (e.g., `.xyz`, `.las`, `.kmz`) if bandwidth is limited. Raw MBES files are large.
• Scheduled Uploads: Use tools like Google Drive or Dropbox with scheduled overnight uploads to avoid impacting daytime acquisition.
• Encryption: Ensure cloud storage uses encryption at rest and in transit.

4. Data Recovery Quick Guide

If data is lost from the primary drive, follow this sequence to minimize downtime.

🔧 Recovery Steps

1. Do NOT write anything new to the failed drive. This can overwrite recoverable data.
2. Restore from External Drive A. This is the fastest method.
3. If Drive A fails, retrieve Drive B from secure storage.
4. If both physical drives fail, download critical files from the cloud.
5. For accidental deletion, use free tools like Recuva immediately.

5. Recommended Field Hardware

Investing in reliable, rugged hardware is cheaper than a single data recovery service.

💾 Hardware Recommendations

Item	Specification
External SSD (Primary)	1-2 TB, Rugged (e.g., Samsung T7 Shield, SanDisk Extreme)
External HDD (Secondary)	4-5 TB, Portable (for long projects)
Protective Case	Waterproof, shockproof hard case (e.g., Pelican)

📐 Backup Verification Checklist

□ Are there 3 copies of today's data?
□ Are the backup drives stored in separate locations?
□ Have you verified file sizes match?
□ Is the cloud upload (if used) complete?

Frequently Asked Questions

Q: How often should I replace my backup drives?
A: SSDs have a limited number of write cycles but generally last 3-5 years in field use. Replace if any SMART errors appear.

Q: Can I use USB flash drives for backup?
A: No. They are unreliable, slow, and easily lost. Use only external SSDs or HDDs.

📘 The Complete Field Engineer's IT Toolkit

This protocol is part of a larger guide covering field laptop optimization, data security, and automated backup scripts. The full IT Toolkit is included in the Hydrographic Mastery Suite.

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