Senegal cloud backup: why the 3-2-1 rule remains the reference in 2026
A typical Senegalese SME now stores 100 GB to 5 TB of critical data: accounting (Sage, Ciel, Quickbooks), CRM, HR, client contracts, jobsite photos, scanned invoices, e-commerce product base. A loss = 5-30 day shutdown, sometimes permanent closure.
3-2-1 rule. 3 copies of data, on 2 different media, including 1 offsite. Origin: Peter Krogh (American Society of Media Photographers, 2009). Still current 17 years later.
In 2026, "offsite" = cloud. LTO tapes and external hard drives remain valid as second media, but cloud has become the reference 3rd copy (immutability, geo-redundancy, accessibility).
I deployed backup solutions at 11 Senegalese SMEs (1-50 employees). Here is the method and actual costs.
H2: Cloud provider choice — comparison
| Provider | Storage cost / TB / month | Restoration cost | Pros | Cons |
|---|---|---|---|---|
| Backblaze B2 | ~3,300 FCFA (6 USD) | 6,000 FCFA / TB (10 USD) | Simple, reliable, S3-compatible | No Africa DC |
| Wasabi | ~3,950 FCFA (7 USD) | free (up to 100% of stored data) | Free restoration, S3-compatible | No Africa DC, 1 TB minimum |
| AWS S3 Standard | ~12,600 FCFA (23 USD) | 50,000 FCFA / TB egress | Cape Town + Lagos DC, complete ecosystem | Expensive, complex |
| AWS S3 Glacier Deep Archive | ~550 FCFA (0.99 USD) | 12h delay + egress fees | Very cheap long-term | Slow restoration |
| IDrive Business | ~5,600 FCFA (10 USD) all-in | included | All-in-one, integrated backup agent | Less flexible than S3 |
| OneDrive for Business | 6,800 FCFA (12 USD) / user (1 TB) | included | Microsoft 365 integrated | Not real backup (sync) |
| Google Drive Business Standard | 6,200 FCFA (11 USD) / user (2 TB) | included | Workspace integrated | Not real backup (sync) |
2026 recommendation. For most Senegalese SMEs: Backblaze B2 or Wasabi for cold backup (3rd copy). Wasabi wins if restorations are frequent (monthly test, actual partial restoration).
H2: Typical 3-2-1 architecture for 15-employee SME
Copy 1 (production). Live data on Synology DS1522+ NAS file server RAID 5 (8-32 TB) or on Microsoft 365 / Google Workspace.
Copy 2 (local, different media). Automatic nightly backup to second Synology DS220+ NAS in another office / room / fireproof cabinet. Software: Synology Hyper Backup, free integrated.
Copy 3 (cloud, offsite). Encrypted backup to Backblaze B2 via Hyper Backup C2 or Veeam or Cloudberry. AES-256 client-side encryption (key stays with you, Backblaze cannot read your data).
For SaaS (Microsoft 365 / Google Workspace). Microsoft and Google are NOT responsible for your data backup (shared responsibility model). They replicate their servers, not your human errors nor ransomware. Solution: dedicated SaaS backup: SkyKick (~3,300 FCFA/user/month), Veeam M365 (~2,800 FCFA/user/month), Datto SaaS Protection (~3,900 FCFA/user/month), AvePoint (~3,500 FCFA/user/month).
H2: RPO and RTO — how much time can you afford to lose?
| Metric | Definition | Typical SME value |
|---|---|---|
| RPO (Recovery Point Objective) | Max acceptable data loss | 1-24h by criticality |
| RTO (Recovery Time Objective) | Max acceptable restart time | 2-48h by criticality |
Concrete examples.
- E-commerce with 500 orders/day: RPO 15 min, RTO 1h (losing 4h = losing 50-150 K FCFA + dissatisfied clients).
- Law firm: RPO 4h, RTO 8h.
- Construction / jobsite: RPO 24h, RTO 48h.
To achieve RPO 15 min: NAS snapshots every 15 min + continuous cloud replication (Veeam, Datto BCDR).
For RPO 24h: classic nightly daily backup is enough.
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H2: Restoration test — the golden rule
An untested backup is not a backup. 60% of SMEs discover their backups are corrupted / incomplete / non-restorable AT the moment of incident.
Method. Monthly test: restore a random file (open last January accounting, jobsite photo from 6 months ago). Quarterly test: restore a complete tree (1 folder of 50 GB). Annual test: full DR (simulate server loss, fully restore on backup infra).
H2: Typical monthly costs 15-employee SME (3 TB data)
| Item | Monthly cost FCFA |
|---|---|
| Main Synology DS1522+ NAS (16 TB usable) | amortization ~120,000 |
| Secondary Synology DS220+ NAS (4 TB usable) | amortization ~35,000 |
| Backblaze B2 3 TB | ~10,000 |
| Microsoft 365 SaaS backup (Veeam, 15 users) | ~42,000 |
| Veeam Backup & Replication licenses (Community free < 10 workloads, otherwise ~95,000) | 0-95,000 |
| Tests + supervision (1h IT/month) | 35,000 |
Total: 240,000-340,000 FCFA / month. Compare with complete loss cost (5-40 M FCFA + brand damage).
FAQ
Should we back up Microsoft 365?
Yes absolutely. Microsoft applies shared responsibility model: they guarantee infra availability, you are responsible for backing up your content (emails, OneDrive, SharePoint, Teams). Tools: Veeam Backup for M365, SkyKick, Datto SaaS Protection.
Backblaze B2 vs Wasabi in 2026?
Backblaze: best storage price (3,300 FCFA/TB/month), bills egress (6,000 FCFA/TB). Wasabi: slightly more expensive on storage (3,950 FCFA/TB/month), free egress up to 100% of storage. If you restore often: Wasabi. If pure cold storage: Backblaze.
Client-side or server-side encryption?
Always client-side. Key stays with you (managed by your backup software: Veeam, Hyper Backup, Arq, Duplicati). Cloud provider cannot read your data. Important: back up the key offline (paper safe + KeePass), its loss makes backups unusable.
Local or full cloud backup?
Hybrid always. Local = fast restoration (short RTO). Cloud = ransomware and fire / theft / flood protection. Both are complementary, not competitors.
How long to keep backups?
GFS (Grandfather Father Son) scheme recommended: 7 daily, 4 weekly, 12 monthly, 7 annual backups. Total cycle: 7 years (Senegal legal duration for accounting). Storage cost increases with retention: plan x2-x3 of active volume.
Let's talk about your case
If you want to audit your current backup and design a robust 3-2-1 architecture for your SME, we can design this mission. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
