Why build a cloud backup cost calculator?

Every business has different data types, retention needs and recovery expectations. A quick calculator helps you budget storage, network transfer, and subscription or licensing costs — so you can choose the right provider and plan for growth.

Inputs your calculator needs

Collect these values before calculating. Keep entries conservative and document assumptions.

• Total active data today (GB or TB)
• Number of users / devices (e.g., 5 employees)
• Average per-user data (GB) and shared data (GB)
• Daily/Monthly change rate (% of data changed each month)
• Retention policy and versioning (how many daily/weekly versions to keep)
• Compression & deduplication factor (typical 1.2x–2x savings)
• Monthly growth rate (%)
• Provider storage price (€/GB or €/100 GB)
• Provider transfer/egress price (€/GB) and any subscription/license fees
• Restore frequency (how often you expect to download large amounts of data)

Step-by-step calculator method

1. Estimate baseline data: Add per-user files + shared files + servers/databases. (Example below.)
2. Apply change & retention: Multiply baseline by (1 + average retained versions). E.g., keep 4 weekly versions = 4× working set.
3. Apply compression/dedupe: Divide the previous total by the expected efficiency factor (e.g., 1.5 for conservative dedupe).
4. Account for growth: Add expected monthly growth for the billing period (use 12 months if calculating yearly cost).
5. Calculate storage cost: Multiply final stored GB by provider price per GB.
6. Calculate transfer/egress costs: Estimate monthly uploads and expected restores × provider transfer price. Some providers (like Wasabi) advertise no egress fees — check provider terms.
7. Add subscription / license fees: Include agent licensing, per-user fees, or a minimum monthly plan cost.

Example: how to estimate backup storage needs for 5 employees

Work through a realistic example so you can reproduce this for your business.

Assumptions

• 5 employees
• Average per-user active files: 50 GB → 5 × 50 = 250 GB
• Shared drives / collaboration data: 200 GB
• Small server / database: 50 GB
• Working set baseline = 250 + 200 + 50 = 500 GB
• Retention & versions: keep weekly snapshots for 4 weeks → multiplier 4 → 500 × 4 = 2,000 GB
• Dedupe/compression: conservative factor 1.5 → stored = 2,000 / 1.5 ≈ 1,333 GB
• Round up: 1.4 TB (for safety)

Convert to provider units

If a provider sells in 100 GB units (AgooCloud example pricing in Terms & Conditions), you need 14 units (1,400 GB).

Monthly cost example (AgooCloud pricing model)

AgooCloud lists units of 100 GB at €6 per month (see Terms & Conditions). For 14 units: 14 × €6 = €84 / month.

Example: cost of backing up 1TB per month in Europe

Using the same unit price (100 GB = €6):

• 1 TB = 10 × 100 GB units → 10 × €6 = €60 / month for storage
• Transfer costs: many backup providers charge for egress (restores). If your provider charges €0.05/GB for restore, a full 1 TB restore costs ~€50. If the provider does not charge egress (or your ISP includes uploads), monthly restore costs may be zero unless you restore data.
• License/agent fees: add any per-device agent fee. For small businesses, agent fees are often included or small compared with storage.

Conclusion: the baseline storage cost for 1 TB in this example is ~€60/month; add transfer and subscription fees depending on provider.

Is cloud backup cheaper than external drives long term?

Short answer: It depends on how you value reliability, offsite protection, and staff time.

Cost comparison (illustrative)

• External drive: 1–4 TB drives cost ~€60–€120 upfront each. For redundancy, you’ll keep multiples and rotate offsite. Drives typically need replacing every 3–5 years.
• Cloud: predictable monthly fee (e.g., €60/month for 1 TB in the example). Over three years that’s ~€2,160 vs. a drive TCO of maybe €200–€500 plus offsite storage and admin time.

Key non-monetary factors that make cloud often the better long-term choice:

• Automation: less staff time and fewer human errors.
• Offsite and redundant storage: protection from fire, theft or local disaster.
• Versioning and faster restores (depending on bandwidth).
• Security: encryption, access controls and audit logs that consumer drives lack.

If you only need an inexpensive cold copy and handle rotation and testing rigorously, drives can be cheaper on purchase cost but carry risk and ongoing labour that often outweighs savings.

Compare cost of cloud backup vs tape archive

Tape remains the lowest cost per TB for long-term cold storage at scale, but it has trade-offs:

• Lowest per-TB media cost for multi-TB archives (suitable for large datasets kept long-term).
• Higher capital expense: tape libraries and drives are expensive to buy and maintain.
• Operational overhead: manual or robotic handling, offsite logistics, cataloging and periodic media refresh.
• Slower restore times and more complex restore workflows.

Use tape if you have very large cold archives and a mature operations process. For small businesses that need rapid recovery, simpler management and predictable monthly costs, cloud backup is typically the better fit.

Putting it together: a compact calculator formula

Use this formula as a spreadsheet cell to estimate monthly storage cost:

Stored_GB = ROUNDUP(((Users * GB_per_user + Shared_GB + Server_GB) * Version_Multiplier) / Dedupe_Factor * (1 + Monthly_Growth%), 1)
Monthly_Storage_Cost = (Stored_GB / 100) * Provider_Price_per_100GB

Then add:

• Estimated monthly transfer costs (expected restores × provider_egress_price)
• Subscription/licensing fees
• One-off migration costs (seed loads or initial uploads)

Practical tips to reduce costs

• Enable deduplication and compression to reduce stored GB.
• Use lifecycle policies: move older backups to cheaper cold tiers if available.
• Exclude operating system or rebuildable files and use image-level backups for servers.
• Test restores: avoid paying for accidental long restore operations later.
• Negotiate business pricing for predictable monthly usage.

Where to get authoritative guidance

For backup best practices and risk guidance, see ENISA and NIST recommendations on backups and data protection:

• ENISA (European Union Agency for Cybersecurity)
• NIST (National Institute of Standards and Technology)

Next steps for AgooCloud users

If you want a fast estimate for your small business, try this approach using your current totals and AgooCloud’s pricing units in our Terms & Conditions. For small business backup guidance and managed options, see our overview: Backup for Small Business.

Conclusion

Use this cloud backup cost calculator for businesses to build a clear, repeatable budget: estimate baseline data, apply retention and dedupe, then multiply by provider price and add transfer and subscription fees. For 5 employees the worked example produced ~1.4 TB stored and ~€84/month in our sample pricing; 1 TB baseline storage in Europe can be ~€60/month with the same pricing model — but always check transfer and restore fees before choosing a provider.