Splunk Search

Search head disk space requirements

cafissimo
Communicator

Hello, please, I would like to know why, for a search head that is on top of two splunk indexers indexing 300 gb/day of data, documentation (http://www.splunk.com/base/Documentation/4.2/Installation/CapacityplanningforalargerSplunkdeployment) says that "2 300 gb hard disks" are needed. Thanks in advance and best regards.

Luca Caldiero Consoft Sistemi S.p.A.

Tags (2)
1 Solution

MuS
SplunkTrust
SplunkTrust

Hi cafissimo

a search head needs CPU power more then IO throughput; that's why 2 local disks are enough. the more CPU cores you have in the search head, the more concurrent searches can be run on it.

regards, MuS

View solution in original post

gkanapathy
Splunk Employee
Splunk Employee

A search head really doesn't.

MuS
SplunkTrust
SplunkTrust

Hi cafissimo

a search head needs CPU power more then IO throughput; that's why 2 local disks are enough. the more CPU cores you have in the search head, the more concurrent searches can be run on it.

regards, MuS

Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Make Your Machine Data AI-Ready in Splunk

Every team is getting ready for AI agents.   Thursday, November 12, 2026  |  11AM  PST / 2PM EST   ...

Splunk Asynchronous Forwarding Explained

Splunk asynchronous forwarding is often misunderstood as simply setting autoLBVolume. That is not quite right. ...

How to Monitor AI Agents with Splunk Agent Observability

Let’s say I’m running a travel planning AI app in production. A user asks for three concise hotel options in ...