VEEAM IMMUTABLE STORAGE COST ESTIMATOR
STORAGE IS CHEAP. LOCKING IT ISIN’T
Every architect knows the storage cost. Almost none of them know the API cost. S3 Object Lock charges you twice — once to write the data, once to lock it. On a multi-terabyte backup dataset, the PUT and TAG requests required for ransomware immutability routinely account for 30% or more of the total monthly bill. Standard cloud calculators don’t show you that number. This one does. Model your true immutable backup cost — including write amplification, API churn, and retention strategy — before you deploy, not after your first invoice.
🔒 Privacy Architecture: No cookies. No tracking pixels. No server-side database.
This logic runs entirely in your local browser session.
Key Features
PUT, LIST, and TAG requests required to lock your data against ransomware — which often accounts for 30% of the total bill.You’ve Modeled the Cost.
Now Build the Architecture.
The API Tax is one variable. True immutability requires enforcement at five layers — storage, backup software, access control, air gap, and recovery validation. Knowing your cost is the start. Knowing your architecture holds under adversarial conditions is the goal.
Immutable Backup Architecture Review
Vendor-agnostic review of your immutable backup posture — Object Lock configuration, API cost exposure, retention strategy, and the recovery validation gaps most teams discover after an incident, not before.
- > RTO/RPO validation under adversarial conditions
- > Immutable backup design & API cost optimization
- > Ransomware recovery architecture & blast radius
- > DR test cadence & recovery validation framework
Architecture Playbooks. Every Week.
Field-tested data protection blueprints covering immutable backup architecture, ransomware recovery design, RTO/RPO modeling, and the vendor decisions that determine whether your backup strategy holds under real attack conditions.
- > Immutable Backup & Object Lock Architecture
- > Ransomware Recovery & Blast Radius Design
- > Backup Vendor TCO & Cost Modeling
- > DR Validation & Recovery Failure-Mode Analysis
Zero spam. Unsubscribe anytime.
Frequently Asked Questions
Q: Why is there a “Write Overhead” slider when I select 4MB blocks?
A: Larger block sizes (4MB) significantly reduce API costs but can cause Write Amplification—where a small change forces a larger chunk of data to be rewritten.
Sequential Workloads (File/Video): Typically see low overhead (10-20%).
Random Workloads (Databases): Can see high overhead (50-100%). We added the slider so you can adjust this variable based on your specific dataset to find the “break-even” point between API savings and storage growth.
Q: What exactly is the “API Tax”?
A: Cloud storage bills consist of two parts: Capacity (how much space you use) and Operations (how often you touch it). When you enable S3 Object Lock for ransomware protection, Veeam must generate a unique PUT request to write the block and a TAG request to lock it. On a multi-terabyte dataset, this generates millions of requests. We call this the “API Tax” because it is a hidden operational cost that often surprises architects on “Day 2.”
Q: Should I use Periodic Synthetic Fulls or Forever Incremental?
A: Choose Periodic Synthetic Fulls if your compliance standards require a fully independent restore point every week. Be aware this generates a massive spike in API calls (and cost) weekly as Veeam “synthesizes” the new full backup in the cloud.
Choose Forever Incremental if you want to smooth out your monthly OpEx. This method uses fewer API calls because it only writes changed blocks and relies on background merges.
Q: Why doesn’t Wasabi show an “API Tax”?
A: Wasabi Hot Cloud Storage operates on a simplified pricing model that does not charge for egress or API requests (PUT, GET, LIST, TAG). If you select Wasabi in the calculator, you will notice the “API Tax” bar drops to zero. This makes it a popular choice for high-transaction workloads like immutable backups, where metadata chatter is high.