Ceph Cluster Capacity & Architecture Advisor

This tool helps you estimate usable capacity and fault tolerance for a Ceph cluster based on your hardware configuration — whether you are planning an eEVOS virtualisation platform, an eEKAS storage deployment, or a custom Ceph architecture.
 

Enter:

  • Number of nodes

  • Total OSDs

  • Disk size

The advisor calculates total raw capacity and suggests suitable replication and erasure coding profiles including estimated usable space, host-level fault tolerance and performance impact.

All calculations assume CRUSH failure domain = host, protecting against full node failures — the most common enterprise failure scenario.

Fault tolerance values assume no additional simultaneous disk failures. Redundancy acts as a shared safety margin.

Note: This tool provides guidance based on best practices and sizing heuristics. It does not replace a professional architecture review. Our experts and partners are happy to assist with hardware selection and complete eEKAS and eEVOS design for production environments.

Failure Domain: host

Recommendations will adapt based on workload (profiles, performance tier and sizing guidance).
Total Raw Capacity:
Scroll to Top