Cloud storage is cheap. Cloud backup is affordable. But cloud recovery can be shockingly expensive — and most organizations don't realize it until they get the bill.

The culprit is egress fees: the charges cloud providers impose when data leaves their network.

The Egress Problem

Major cloud providers charge $0.05-0.09 per GB for data egress. That sounds small until you do the math:

Now imagine you need to perform a full DR test quarterly. That's $20,000-360,000 per year just in data transfer fees — on top of your storage and compute costs.

How Egress Fees Affect Backup Strategy

DR testing gets skipped. When every DR test costs thousands in egress fees, organizations test less frequently. Untested DR plans fail when you need them most.

Recovery location is constrained. You can't economically recover to a different cloud provider or to on-premises infrastructure. You're effectively locked into recovering within the same cloud where your backups live.

Partial restores become the default. Instead of restoring full environments, teams restore only the minimum necessary data. This saves money but increases risk — untested components may not work when fully restored.

Multi-cloud DR is financially punished. The most resilient DR strategy stores copies across multiple providers. Egress fees make this prohibitively expensive for large datasets.

Strategies to Manage Egress Costs

Use same-region recovery. Recovering within the same cloud region avoids egress fees entirely. Store backup copies in the same region as your DR infrastructure.

Negotiate egress pricing. Large cloud customers can negotiate reduced egress rates. If backup and DR are significant line items, include egress in your contract negotiations.

Use dedicated interconnects. Private connectivity options like Direct Connect or Dedicated Interconnect have lower egress pricing than internet-based transfer.

Implement incremental recovery. Instead of restoring full environments, use incremental restore capabilities that transfer only changed blocks. This dramatically reduces the data volume for DR tests.

Consider egress-free alternatives. Some storage providers and backup vendors offer egress-free pricing models. Evaluate whether the total cost of ownership is lower even if per-GB storage is slightly higher.

Cache recovery data locally. After your first full recovery test, maintain a local cache that only needs incremental updates for subsequent tests.

Planning for the Real Cost

When budgeting for cloud backup and DR, include these line items:

1. Backup storage cost (per GB/month)
2. Backup compute cost (for processing and deduplication)
3. Egress fees for DR testing (quarterly)
4. Egress fees for actual recovery (annual estimate based on risk)
5. Cross-region transfer fees (if applicable)
6. API request charges (often overlooked but can add up)

The true cost of cloud backup is not the storage — it's the recovery. Budget accordingly, or be surprised when it matters most.