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Splunk Storage Sizing Calculator

Calculate your Splunk infrastructure requirements based on data ingestion, retention policies, and cluster configuration.

Input Data
Estimate the average daily amount of data to be ingested
100 GB/day
1 GB100 TB
15%
35%
Daily Indexed Storage (Standalone)50.00 GB/day
100.00 GB raw × (15% compression + 35% metadata)
Data Retention
Specify the amount of time to retain data for each storage tier
30d
2mo
9mo
Day 0Total: 360 days
Hot/Warm: 30d
Cold: 60d
Frozen: 270d
Cluster Architecture
Configure indexer clustering for high availability and data redundancy
3
1100
Daily Ingest per Indexer
100.00 GB ÷ 3 indexers
33.33 GB/day

Replicates data across multiple indexers for fault tolerance

Storage Required
Total storage requirement breakdown
Tier
Per Indexer
Total
Hot/Warm
500.00 GB
1.50 TB
Cold
1.00 TB
3.00 TB
Frozen
1.35 TB
4.05 TB
Total
2.85 TB
8.55 TB
indexes.conf
# indexes.conf
# Generated by datadefend Splunk Sizing Calculator
# ================================================
# Daily Raw Volume: 100.00 GB
# Daily Indexed Storage (standalone): 50.00 GB
# Daily Indexed Storage (with RF/SF): 50.00 GB
# Indexer Count: 3
# Replication Factor: 1
# Search Factor: 1
# ================================================

[volume:hot]
path = /opt/splunk/var/lib/splunk/hot
maxVolumeDataSizeMB = 512000

[volume:cold]
path = /opt/splunk/var/lib/splunk/cold
maxVolumeDataSizeMB = 1024000

[volume:frozen]
path = /opt/splunk/var/lib/splunk/frozen
maxVolumeDataSizeMB = 1382400

[default]
repFactor = 0
homePath = volume:hot/$_index_name/db
coldPath = volume:cold/$_index_name/colddb
thawedPath = $SPLUNK_DB/$_index_name/thaweddb
coldToFrozenDir = volume:frozen/$_index_name/frozendb

maxDataSize = auto_high_volume
frozenTimePeriodInSecs = 31104000

Need Help with Splunk?

Our experts can help you design, deploy, and optimize your Splunk infrastructure.

This calculator provides estimates based on typical Splunk deployments. Actual requirements may vary based on data characteristics, search patterns, and specific use cases.

Splunk® is a registered trademark of Splunk Inc. datadefend GmbH is not affiliated with, endorsed by, or sponsored by Splunk Inc. This tool is provided "as is" without warranty of any kind. datadefend GmbH assumes no liability for decisions made based on the output of this calculator. Always validate sizing recommendations with your own testing and consult qualified professionals before making infrastructure investments.

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