Ceph calculator
Recommended capacity for clusters with 3 to 128 nodes, failure simulation, block.db and WAL, RAM, network and recovery-time estimates.
Tools for sysadmins
Calculators for people who design and run infrastructure: formulas shown in full, official sources, and a version and a date for every model.
Ceph PG calculator
pg_num for every pool with the PGCalc rule or the autoscaler settings, estimated PG instances on every OSD and ready-made ceph and pveceph commands.
How we handle the numbers
Public formulas
Every formula is written out on the page, with its variables and a worked example.
Official sources
Ceph and Proxmox VE documentation cited for every rule, with the nature of each number: recommendation, default, community observation or the calculator's own choice.
Test cases
Every engine is checked against an independent reference implementation, on cases from 3 to 128 nodes, failures included.
Versioned models
Every model has a version and a date: when a new Ceph or Proxmox VE release comes out, we review the calculation rules.
Need a calculation for your own case?
For a cluster the calculators do not cover, a Rackone systems engineer assesses drives, network, protection and growth with you.
Talk to a systems engineer
+39 0421 1885889 · sales@rackone.it