Try our new research platform with insights from 80,000+ expert users

OpenText Enterprise Security Manager vs Splunk Enterprise Security vs Trellix ESM comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

ROI

Sentiment score
4.9
ROI from OpenText Enterprise Security Manager varies widely, influenced by threat detection, compliance benefits, and prevention of incidents.
Sentiment score
6.4
Splunk Enterprise Security boosts efficiency, reduces costs, and enhances visibility, providing significant ROI and improving security posture.
Sentiment score
3.2
In-house teams claim McAfee offers high ROI, but executives struggle to see it without C-level focused reports.
The documentation for Splunk Enterprise Security is outstanding. It is well-organized and easy to access.
We couldn't calculate what would have been the cost if they had actually gotten compromised; however, they were in the process, so every investment was returned immediately.
On average, my SecOps team takes probably at least a quarter of the time, if not more, to remediate security incidents with Splunk Enterprise Security compared to our previous solution.
 

Customer Service

Sentiment score
5.4
OpenText Enterprise Security Manager support receives mixed reviews, with common complaints about slow resolution and inadequate expertise in complex issues.
Sentiment score
6.3
Splunk Enterprise Security offers expert support, though response speed varies; the online community and documentation enhance user experience.
Sentiment score
4.3
Trellix ESM customer service is generally satisfactory, but technical support varies with noted delays and skill gaps.
If I raise a P1 or P0 ticket, the response time is often delayed by four to eight hours.
We have paid for Splunk support, and we’re not on the free tier hoping for assistance; we are a significant customer and invest a lot in this service.
I have had nothing but good experiences with Splunk support, receiving timely and helpful replies.
We've had great customer success managers who have helped us navigate scaling from 600 gigs to 30 terabytes.
I would rate support for Trellix ESM 10 out of 10 because if we connect with the support in the UK, we get excellent support.
It's rare for me to need them unless it's an issue with licensing, and they are the best in that regard.
 

Scalability Issues

Sentiment score
5.9
OpenText Enterprise Security Manager is scalable for large deployments but faces cost challenges at the logger level.
Sentiment score
7.4
Splunk Enterprise Security is praised for effortless scalability, effectively managing increased data demands for both cloud and on-prem environments.
Sentiment score
8.6
Trellix ESM is highly scalable and adaptable, excelling in enterprise environments but may have limitations for medium enterprises.
It lacks some capabilities compared to other tools available in the market.
We currently rely on disaster recovery and backup recovery, which takes time to recover, during which you're basically blind, so I'm pushing my leadership team to switch over to a clustering environment for constant availability.
They struggle a bit with pure virtual environments, but in terms of how much they can handle, it is pretty good.
It is easy to scale.
Scalability is quite easier with Trellix ESM, because all we need to do is add more receivers to it, so it can go to any point.
 

Stability Issues

Sentiment score
5.1
OpenText Enterprise Security Manager is stable and reliable, though performance varies with challenges in virtualization and specific components.
Sentiment score
7.5
Splunk Enterprise Security is stable and reliable, with occasional performance issues linked to configuration or resource constraints.
Sentiment score
8.3
Trellix ESM is generally stable with effective support, though some users experience bugs and interruptions affecting reliability.
The stability of ArcSight Enterprise Security Manager (ESM) is not very robust.
They test it very thoroughly before release, and our customers have Splunk running for months without issues.
Splunk has been very reliable and very consistent.
It provides a stable environment but needs to integrate with ITSM platforms to achieve better visibility.
 

Room For Improvement

OpenText Enterprise Security Manager needs user interface upgrades, better integration, improved documentation, and enhancements in analytics and scalability.
Splunk Enterprise Security needs enhanced UI, simpler setup, better training, flexible pricing, improved integration, permissions, AI, and dashboards.
Trellix ESM requires stability, HTML5 migration, and upgrades in customization, integration, support, usability, and AI for improved functionality.
The integration aspect of ArcSight Enterprise Security Manager (ESM) needs improvement.
Improving the infrastructure behind Splunk Enterprise Security is vital—enhanced cores, CPUs, and memory should be prioritized to support better processing power.
Splunk Enterprise Security is not something that automatically picks things; you have to set up use cases, update data models, and link the right use cases to the right data models for those detections to happen.
For any future enhancements or features, such as MLTK and SOAR platform integration, we need more visibility, training, and certification for the skilled professionals who are working.
If there is any device which is not covered, there should not be any additional charges for writing the custom parsers on that.
 

Setup Cost

OpenText Enterprise Security Manager is costly but offers robust features and scalability, with possible discounts and cost management strategies.
Splunk Enterprise Security is costly yet valued for robust features; best for larger firms despite complex cost management.
Trellix ESM offers flexible, slightly costly licensing, valued for its SOC features, with straightforward setup and deployment.
ArcSight Enterprise Security Manager (ESM) is very cheap compared to other tools.
I saw clients spend two million dollars a year just feeding data into the Splunk solution.
The platform requires significant financial investment and resources, making it expensive despite its comprehensive features.
I find it to be affordable, which is why every industry uses it.
 

Valuable Features

ArcSight offers advanced threat detection, robust integration, customizable dashboards, and automates event correlation for efficient security operations.
Splunk Enterprise Security offers robust log management, analytics, and integration, enhancing threat detection, monitoring, and operational efficiency.
Trellix ESM excels in real-time threat detection, user-friendly interface, quick deployment, and strong integration with other technologies.
The ability to interpret data is highly valued.
This capability is useful for performance monitoring and issue identification.
I assess Splunk Enterprise Security's insider threat detection capabilities for helping to find unknown threats and anomalous user behavior as great.
Splunk Enterprise Security provides the foundation for unified threat detection, investigation, and response, enabling fast identification of critical issues.
The weakest point is it doesn't cover almost all the devices, so the customer has to be more dependent on the parsers to be written by the Professional Services team.
 

Mindshare comparison

As of October 2025, in the Security Information and Event Management (SIEM) category, the mindshare of OpenText Enterprise Security Manager is 1.6%, up from 1.2% compared to the previous year. The mindshare of Splunk Enterprise Security is 9.2%, down from 11.2% compared to the previous year. The mindshare of Trellix ESM is 1.1%, up from 0.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Market Share Distribution
ProductMarket Share (%)
Splunk Enterprise Security9.2%
Trellix ESM1.1%
OpenText Enterprise Security Manager1.6%
Other88.1%
Security Information and Event Management (SIEM)
 

Featured Reviews

Ramnesh  Dubey - PeerSpot reviewer
Allows for monitoring logs according to industry standards within ESM but has a total capacity capped at 12 TB, limiting real-time data retention periods
The first limitation is with the ArcSight Data Storage Manager (ADSM). ArcSight's total capacity is currently capped at 12 TB. This becomes an issue if a customer needs a longer real-time data retention period, such as exceeding 90 days or reaching a year or even ten months. Increasing the disk space beyond 12 TB is not currently possible. So, increasing the storage capacity is one area for improvement. Additionally, the real-time data retention is limited due to the 12 TB restriction. Depending on the Events Per Second (EPS) you receive, you might only be able to retain data for seven to ten days. Overall, the 12 TB limit is the main issue we face in terms of maximizing real-time data storage. Moreover, there are a few improvements I would like to see in future releases. My main suggestion for ArcSight is to simplify the deployment process. Currently, the installation process is quite complex. There are various components involved, including transformations, multiple installations, and containerization for various components. Ideally, I'd recommend that ArcSight allow the entire installation, including the ESM and database, to be completed within a single unified setup process for a streamlined experience. Additionally, having readily available and well-organized documentation for the step-by-step installation process would be incredibly helpful. I would also like to see better support.
Kyle Vernham - PeerSpot reviewer
Built-in searches and unified data access streamline alert investigation and boosts analyst efficiency
The two features I appreciate the most in Splunk Enterprise Security are the built-in searches, which have been very easy for us to get started with right out of the box, and the fact that it accesses all of our other systems. You can access it as a pane of glass rather than having to search individually. We also have the option to compare our analysts from our service to service. Splunk Enterprise Security helps our SOC team prioritize and investigate high-fidelity alerts more effectively by providing a more in-depth look and the ability to access a lot more of our data. Instead of jumping from several segmented systems, it allows us to have everything brought together in one place. For example, you have to move from our purview to our build system and to Splunk Enterprise Security, and it enables us to streamline that process. The built-in features of Splunk Enterprise Security, which we recently procured, have given us a good starting point and demonstrated the value of the product, providing an easy way to sell it to our company. The ease of getting everything into our purview helps us, and it serves as a good start for the investigation part in one location rather than what we usually have, which is jumping from system to system to system. Splunk Enterprise Security plays a role in our company's strategy to combat insider threats and advanced persistent threats by currently being in its technical test phase. We are still rolling it out, and it should help us find any insider threats based on information that our policy states should not be present in our system. Splunk Enterprise Security's risk-based alerting (RBA) has impacted our alert volume and analyst productivity because we've got many different systems feeding into it. However, it has helped to make it easier for our analysts to go through a set of events rather than 100 alerts. RBA allows us to streamline the process and customize it for our analysts. When it comes to leveraging Splunk Enterprise Security's dashboards and visualizations to communicate security posture to executives, it's pretty straightforward for any type of information. The visualization is easy to understand, but I haven't had any direct conversations with our executives.
Daniel Durian - PeerSpot reviewer
Helps to monitor and detect cyberattacks
The tool's effectiveness depends on how you define your log sources. To build visibility of incoming and outgoing traffic, you need logs from perimeter defense, firewalls, web application firewalls, and endpoint protection. With good traffic visibility, incident response time is really quick. Trellix ESM provides situation awareness. On the dashboard, I can see outbound and inbound communications to known threat hosts, IPS/IDS activity, and threat intelligence of the perimeter defense in the firewall. This information helps preempt attacks.
report
Use our free recommendation engine to learn which Security Information and Event Management (SIEM) solutions are best for your needs.
872,019 professionals have used our research since 2012.
 

Comparison Review

VS
Feb 26, 2015
HP ArcSight vs. IBM QRadar vs. ​McAfee Nitro vs. Splunk vs. RSA Security vs. LogRhythm
We at Infosecnirvana.com have done several posts on SIEM. After the Dummies Guide on SIEM, we are following it up with a SIEM Product Comparison – 101 deck. So, here it is for your viewing pleasure. Let me know what you think by posting your comments below. The key products compared here are…
 

Top Industries

By visitors reading reviews
Financial Services Firm
13%
Manufacturing Company
11%
Computer Software Company
11%
Performing Arts
8%
Financial Services Firm
14%
Computer Software Company
14%
Manufacturing Company
8%
Government
7%
Comms Service Provider
16%
Financial Services Firm
10%
Computer Software Company
8%
Manufacturing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business37
Midsize Enterprise14
Large Enterprise57
By reviewers
Company SizeCount
Small Business110
Midsize Enterprise50
Large Enterprise257
By reviewers
Company SizeCount
Small Business15
Midsize Enterprise6
Large Enterprise24
 

Questions from the Community

Which is the best SIEM tool for a mid-sized financial services firm: Arcsight or Securonix?
In my market, a lot of financial companies had or have an ArcSight installation. Just because in former times it was ...
What do you like most about ArcSight Enterprise Security Manager (ESM)?
We utilize ArcSight ESM for real-time threat detection in our organization. We have custom rules that we've developed...
What is your experience regarding pricing and costs for ArcSight Enterprise Security Manager (ESM)?
ArcSight Enterprise Security Manager (ESM) is very cheap compared to other tools. It is worth the investment if you a...
What SOC product do you recommend?
For tools I’d recommend: -SIEM- LogRhythm -SOAR- Palo Alto XSOAR Doing commercial w/o both (or at least an XDR) is a...
What is a better choice, Splunk or Azure Sentinel?
It would really depend on (1) which logs you need to ingest and (2) what are your use cases Splunk is easy for ingest...
How does Splunk compare with Azure Monitor?
Splunk handles a high amount of data very well. We use Splunk to capture information and as an aggregator for monitor...
What do you like most about McAfee ESM?
The solution's technical support is great.
What is your experience regarding pricing and costs for McAfee ESM?
When discussing Trellix ESM pricing and licensing, if you consider some premium product, the pricing also has to be p...
What needs improvement with McAfee ESM?
Areas of Trellix ESM that could be improved or enhanced include checking on the clients who are still on-prem, especi...
 

Also Known As

Micro Focus ArcSight, HPE ArcSight, ArcSight
No data available
McAfee ESM, NitroSecurity, McAfee Enterprise Security Manager
 

Overview

 

Sample Customers

Lake Health, U.S. Department of Health and Human Services, Bank AlJazira, Banca Intesa, and Obrela.
Splunk has more than 7,000 customers spread across over 90 countries. These customers include Telenor, UniCredit, ideeli, McKenney's, Tesco, and SurveyMonkey.
San Francisco Police Credit Union, Wªstenrot Gruppe, Volusion, California Department of Corrections & Rehabilitation, Government of New Brunswick, State of Colorado, Macquarie Telecom, Texas Tech University Health Sciences Center, Cologne Bonn Airport
Find out what your peers are saying about Splunk, Wazuh, Microsoft and others in Security Information and Event Management (SIEM). Updated: October 2025.
872,019 professionals have used our research since 2012.