You're reading from Building a Next-Gen SOC with IBM QRadar

Product typeBook

Published inJun 2023

PublisherPackt

ISBN-139781801076029

Edition1st Edition

Tools

Kali Linux

Concepts

Cybersecurity

Author (1)

Ashish M Kothekar

Getting to know the Data Node

Event and flow data are required for security purposes as well as for compliance. The amount of storage available on the Console and processors might not be enough for compliance.

For example, it may be mandated by Central Banks to keep event and flow data for 2 years. The available storage on processors can store data only for 6 months. In such a scenario, multiple Data Nodes can be added to a processor so that the processed data can be stored.

Adding a Data Node to deployment has two advantages:

Increases the storage space for event and flow data
Searches are more efficient when Data Nodes are used

Multiple Data Nodes can be attached to a single processor. One Data Node cannot be attached to multiple processors. What this means is that one Data Node will share data with just one processor.

When Data Nodes are added to the deployment, there is a process called data rebalancing that happens. The incoming data in the processor is distributed amongst the Data Nodes that are attached.

If a Data Node goes down (or crashes), the incoming data is not written to the Data Node. Once the Data Node is up, data is again rebalanced between the processor and Data Node. We will touch more on Data Nodes while discussing searches in Chapter 6.

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Building a Next-Gen SOC with IBM QRadar

Published in: Jun 2023Publisher: PacktISBN-13: 9781801076029

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Author (1)

Ashish M Kothekar

Ashish has a total experience of more than 15 years working for IBM on various different platforms. He is currently working as tech evangelist for IBM Security products. He has been instrumental in developing more than 10 IBM certification exams including IBM products like QRadar, Cloud Pak for Security, IBM SiteProtector, IBM XGS, etc. He has worked with multiple customers on deploying and then upgrading IBM security products. He has contributed regularly by writing blogs and giving talks on security products. He has published many redpapers on the integration of security products with IBM Storage solutions like IBM Spectrum scale. These redpapers are now full-fledged solutions that are being sold. He has also cleared two Mandarin language exams and is HSK2 qualified.
Read more about Ashish M Kothekar

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