Universal Cloud Restore Calculator
Egress Fees. Retrieval Taxes. RTO Reality.
Think Like an Architect. Build Like an Engineer. Budget Like a CFO.
Everyone asks “how much does it cost to store 50TB in the cloud?” Almost nobody asks “how much does it cost to get it back?”
Recovery events trigger a complex web of costs — Data Transfer Out (Egress) fees, per-GB Retrieval charges, and mandatory thaw delays — that don’t appear on any storage pricing page. The bill arrives after the restore. This tool models those costs before the event, so your RTO and RPO targets are built on real numbers, not vendor estimates.
Vendor-agnostic. The physics of cloud egress are the same whether you run Rubrik, Veeam, Cohesity, or Commvault. This tool models the underlying storage layer — not the backup software on top of it.
Per GB egress from AWS S3 Standard — the cost your storage budget never accounted for
Mandatory thaw wait on Glacier Deep Archive — before a single byte transfers
Real-world link efficiency on a standard internet pipe — not the 1 Gbps your spec sheet claims
Rack2Cloud
Universal Cloud Restore Calculator| Data Transfer (Egress) | — |
| Retrieval Fees | — |
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Engineering Key Features
Whether you run Veeam, Rubrik, Cohesity, or Commvault, the physics of the cloud remain the same. This tool models the underlying storage layer — universally applicable to any backup solution writing to object storage.
Most TCO calculators show you the cost to store data. This tool calculates the cost to leave. Egress fees and Retrieval taxes are exposed in full — the numbers that wreck DR budgets after a successful restore.
Restoring from Archive tiers (Glacier Deep Archive, Azure Archive) isn’t instant. Mandatory thaw latency is visualized separately from transfer time — so your RTO calculation reflects what actually happens, not the marketing spec.
A 10 Gbps pipe never delivers 10 Gbps. The Link Efficiency slider accounts for TCP overhead, API latency, re-transmissions, and protocol inefficiency — giving you a restore time that reflects reality, not the circuit spec sheet.
The Numbers Don’t Match Your SLA.
That’s an Architecture Problem.
If the restore time or egress cost output doesn’t fit your recovery objectives, the calculator is telling you something your architecture needs to address before the event — not during it.
Restore-Ready Cloud Architecture Review
Vendor-agnostic review of your cloud storage tier selection, egress cost exposure, and recovery architecture against your actual RTO and RPO commitments. We model the full cost of leaving — before you need to.
- > Storage tier selection vs egress cost model
- > RTO feasibility against bandwidth reality
- > Thaw latency impact on recovery sequencing
- > Architecture recommendation with cost model
Cloud Architecture Playbooks. Every Week.
Field-tested blueprints covering cloud cost architecture, egress optimization, storage tier decisions, and recovery design from real enterprise environments. No vendor marketing. Just the architecture depth that keeps DR budgets intact.
- > Cloud Egress Cost Architecture
- > Storage Tier Selection & Retrieval Physics
- > RTO/RPO Architecture Reality
- > DR Budget Failure-Mode Case Studies
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Frequently Asked Questions
Q: How do I use this calculator?
A: 1. Enter Restore Size: Input the amount of data you need to recover right now. Use the post-deduplication size (the actual amount of data sitting in the cloud bucket).
2. Select Tier: Choose the cloud provider and the specific storage tier where your backup data resides.
3. Set Bandwidth: Adjust the slider to match your company’s internet or Direct Connect/ExpressRoute speed.
4. Adjust Efficiency: Use the “Link Efficiency” slider to account for overhead. (See below).
Q: What is “Link Efficiency” and why is it set to 70%?
A: In networking, “theoretical throughput” (e.g., 1 Gbps) is rarely achievable in practice. We default to 70% to account for:
-> Protocol Overhead: TCP/IP headers and handshakes consume bandwidth.
-> API Latency: The “chattiness” of object storage protocols (GET requests) slows down the stream.
-> Backup Software Overhead: The time your backup software takes to rehydrate, decrypt, and process data blocks.
-> Contention: Other traffic sharing the same internet pipe.
Pro Tip: For highly optimized links (like AWS Direct Connect with a multi-threaded restore agent), you might bump this to 80-90%. For standard internet VPNs, 60-70% is realistic.
Q: Why is there a “Retrieval Delay”?
A: If you store data in “Cold” or “Archive” tiers (like AWS S3 Glacier Deep Archive or Azure Blob Archive), the cloud provider physically moves your data to offline tape or low-power disk. Before you can read a single byte, they must “thaw” or “stage” it back to a hot tier. This process takes anywhere from minutes to 12+ hours depending on the tier. This calculator adds that mandatory wait time to your total RTO.
Q: Where does the pricing come from?
A: We use standard, public list prices (pay-as-you-go) for the US-East (N. Virginia) or equivalent regions for AWS, Azure, and GCP.
-> Note: This calculator does not account for Enterprise Discount Programs (EDP) or reserved capacity pricing. It is intended to provide a “worst-case” conservative estimate for budgeting.
Q: Does this include API Request costs?
A: No. API costs (PUT/GET/LIST requests) vary wildly depending on how your specific backup vendor writes data (e.g., block size, object size). While these costs can add up, Egress and Retrieval fees typically make up 90%+ of a restore bill. We focus on those major cost drivers to keep the tool simple and effective.
Q: Why is the cost so high?
A: Cloud providers often charge little to ingress (upload) data but charge significantly to egress (download) it. This is known as “Data Transfer Out.” Additionally, Archive tiers charge a specific “Retrieval Fee” per GB to discourage using cold storage for active data. This calculator sums both to show the true financial impact of a full disaster recovery event.