Imagine a medical practice. Eight years of patient records, invoices, reports. All on a small NAS device in the office. One morning the device doesn’t start. Hard drive failure. You call a data recovery company — “we’ll try, €800–2000, no guarantee.”

This scenario happens every day. And preventing it costs just a few euros a month.

NAS Backup with AWS S3 — Data Security for SMBs

The Misconception: “I Have a NAS, So I Have a Backup”

A NAS (Network Attached Storage) is an excellent device — central storage, accessible from every computer on the network. But most NAS devices in small businesses run with a single hard drive. No RAID.

What is RAID? RAID writes data to multiple drives simultaneously. In its simplest form, RAID 1 writes the same data to two drives at once. If one fails, the other takes over. No data loss.

With a NAS running a single drive without RAID, the moment that drive fails, everything is gone. No warning, no recovery.

“But my NAS has RAID” — good, but not enough. RAID protects against drive failure. It does not protect against fire, water damage, theft, ransomware, or accidental deletion. An external backup is essential.

The Solution: AWS S3 Cloud Backup

AWS S3 (Simple Storage Service) is Amazon’s cloud storage service. It sounds like something for large corporations — but small businesses can use it for just a few euros a month.

How it works:

NAS device (Synology/QNAP)
        ↓ (automatic, nightly)
Hyper Backup software
        ↓ (encrypted)
AWS S3 — Frankfurt (eu-central-1)
        ↓
Your data: secure, encrypted, redundant

Synology NAS devices have a built-in “Hyper Backup” application. You configure it once, and every night it automatically sends changed files to S3. Your backup runs while you sleep.

AWS S3 Storage Tiers — Which One Is Right for You?

TierBest forAccessCost
S3 StandardFrequently accessed dataInstant~€23/TB/month
S3 Infrequent AccessA few times per monthInstant~€12/TB/month
S3 Glacier InstantRarely accessed archivesMilliseconds~€4/TB/month
S3 Glacier Deep ArchiveLong-term archiving12 hours~€1/TB/month

Recommendation for SMBs: Active business data: S3 Infrequent Access — affordable, instant access when needed. Older records and archive files: S3 Glacier Instant — very low cost, still instantly retrievable.

A typical scenario for a medical practice: active patient data in S3 IA (€5–8/month), older archive years in Glacier (€1–2/month). Total monthly cost: €6–10.

If you process patient, client, or customer data, you are subject to GDPR. Two things are critical for cloud backups:

1. Frankfurt region (eu-central-1) is mandatory — your data must remain within EU borders.

2. Encryption is mandatory — Hyper Backup encrypts your data before sending it to S3. The encryption key stays with you — not even AWS can view the contents.

3. The account is in your name — I open a separate AWS account for each customer in your name. The data and the account belong entirely to you.

For medical practices and law firms I also prepare a Data Processing Agreement (DPA) — required under GDPR.

How Does the Setup Work?

  1. AWS account opened in your name
  2. S3 bucket created with correct tier and lifecycle policies
  3. Hyper Backup installed on your NAS
  4. First full backup created
  5. From the next day, only changed files are sent
  6. Monthly status report by email

What you need to do after setup: Nothing. Everything runs automatically.

What If I Don’t Have a NAS?

S3 backup is also possible without a NAS. We install a small backup agent on your PCs (Duplicati — free), and selected folders are automatically sent to S3.

Conclusion

A NAS with a single drive can fail at any time without warning. Even a RAID NAS does not protect against ransomware or physical damage. With AWS S3, your data is encrypted, redundant, and safe for just a few euros a month.

The account is yours, the data is yours, the encryption key is yours.

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