Fortinet FortiSIEM vs Observer GigaStor comparison

The compared Fortinet and Viavi Solutions solutions aren't in the same category. Fortinet is ranked #7 in SIEM , with an average rating of 8.2, and holds a 2.8% mindshare in the category. Viavi Solutions is ranked #89 in NMS , and holds a 0.4% mindshare. Additionally, 83% of Fortinet users are willing to recommend the solution, compared to 100% of Viavi Solutions users who would recommend it.

Fortinet FortiSIEM

Read 76 Fortinet FortiSIEM reviews

5,718 Views
4,231 Comparison Views

83% willing to recommend

Observer GigaStor

Read 7 Observer GigaStor reviews

964 Views
588 Comparison Views

100% willing to recommend

Fortinet FortiSIEM

Observer GigaStor

Comparison Buyer's Guide

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Executive Summary

We performed a comparison between Fortinet FortiSIEM and Observer GigaStor based on real PeerSpot user reviews.

Find out in this report how the two Security Information and Event Management (SIEM) solutions compare in terms of features, pricing, service and support, easy of deployment, and ROI.

To learn more, read our detailed Fortinet FortiSIEM vs. Observer GigaStor Report (Updated: May 2020).

Buyer's Guide

Fortinet FortiSIEM vs. Observer GigaStor

May 2020

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Helped 880,435 peers since 2012

Review summaries and opinions

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

Categories and Ranking

Fortinet FortiSIEM

Average Rating

7.6

Reviews Sentiment

6.2

Number of Reviews

Ranking in other categories

Security Information and Event Management (SIEM) (7th), AI Observability (5th)

Observer GigaStor

Average Rating

9.0

Reviews Sentiment

8.1

Number of Reviews

Ranking in other categories

Network Monitoring Software (89th), Network Troubleshooting (14th), Network Packet Broker (NPB) (11th)

Mindshare comparison

Fortinet FortiSIEM and Observer GigaStor aren’t in the same category and serve different purposes. Fortinet FortiSIEM is designed for Security Information and Event Management (SIEM) and holds a mindshare of 2.8%, down 3.0% compared to last year.
Observer GigaStor, on the other hand, focuses on Network Monitoring Software, holds 0.4% mindshare, up 0.2% since last year.

Security Information and Event Management (SIEM) Market Share Distribution
Product	Market Share (%)
Fortinet FortiSIEM	2.8%
Splunk Enterprise Security	7.4%
Wazuh	7.3%
Other	82.5%

Security Information and Event Management (SIEM)

Network Monitoring Software Market Share Distribution
Product	Market Share (%)
Observer GigaStor	0.4%
Zabbix	6.9%
SolarWinds NPM	3.4%
Other	89.3%

Network Monitoring Software

Featured Reviews

SaurabhYadav5

Network Engineer at Ogma Consulting

Comprehensive monitoring boosts security, yet incident management features need expansion

Fortinet FortiSIEM should broaden its remediation part to include more features for incident management. Currently, to manage repetitive incidents or for remediation, I need to use a separate software called FortiSOAR. Additionally, the search functionality in FortiAI should be improved to provide more precise results, making it easier for me to understand what actions need to be taken.

Read full review

Jeroen-Dubbelman

Director at Bitrate

Aids significantly in the threat-hunting process and provides a score-based evaluation of user experience

There are many valuable features, but understanding end-user response times stands out. It provides a score-based evaluation of user experience, helping customers quickly pinpoint whether issues originate from the network, server, client, or application. Additionally, it facilitates in-depth analysis of application dependencies. The retrospective network analysis capability of Observer GigaStor has been beneficial. It's a pivotal feature for network performance solutions. However, I prefer to consider the entire solution suite - GigaStor, along with GigaFlow and Apex - for comprehensive network visibility and monitoring. So, I prefer to integrate all three solutions to provide the best visibility. They complement each other well, with Apex aggregating and correlating data from both GigaStor and GigaFlow to enhance environmental understanding and troubleshooting efficiency.

Read full review

Quotes from Members

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

Pros

"Some of our customers who use this solution have seen improvement in their connection with load balancing on both connections."

"Both the collecting logs and duo correlation are valuable features for us."

"The solution is easy to use and user-friendly."

"The stability is very reliable. It offers very good performance."

"FortiSIEM's log correlation is good."

"The most valuable feature is the anomaly-reporting alarms."

"The most valuable feature is the dashboard. CMDB database collects data from a lot of pre-configured devices."

"It is used as an alerting platform."

More Fortinet FortiSIEM pros

"The ability to capture packets. It is not only for monitoring. That is very important for a company that wants to keep an eye on the packets, the transactions, the flows..."

"This solution allows us to see exactly what is going on in the network and we can very quickly solve issues with users."

"It can help to write your rules, organize firewalls, your block, and also your protocols and IP address to come in or out of your network."

"There are many valuable features, but understanding end-user response times stands out. It provides a score-based evaluation of user experience, helping customers quickly pinpoint whether issues originate from the network, server, client, or application. Additionally, it facilitates in-depth analysis of application dependencies."

"I also have the ability to see an application's performance, to see what's going on, why a network is slow, why this program for this user is experiencing a delay or some network issue"

"It's able to capture packets and, after a long time, you can come and use that information; to check, to analyze - everything you would want to do. So it's very good and helpful if you want to protect your data. It is stored in a certain place where you can access it every time you want to analyze it."

Cons

"Patching is not great - we're not getting the support we'd expect."

"They could work on their documentation. If there's anything about the solution that needs improvement, it's that. For example, documentation already is on a very high level but specifically on the CLI there are tons of features which can be fine-tuned and thousands of commands are very difficult to document. If they could make this easier, it would improve the overall solution."

"It would be good if the solution offered even more configuration options, especially in relation to the VPN so that it continues to be a very flexible option."

"The UI could improve in Fortinet FortiSIEM. Humans view the UI frequently for data and if it was more visually pleasing it would be beneficial."

"Performance could be enhanced, but I do not wish to elaborate on needed improvements."

"Fortinet FortiSIEM needs to provide better API integrations to users."

"Fortinet FortiSIEM should broaden its remediation part to include more features for incident management. Currently, to manage repetitive incidents or for remediation, I need to use a separate software called FortiSOAR."

"The product does not have Security Orchestration and Automation Response, I would recommend adding this feature."

More Fortinet FortiSIEM cons

"Maybe the graphical user interface could be simplified to allow people to use it more easily. It's already good, but they can work more on it to make it even easier."

"GigaStor feeds into Apex. So, the area where there could be improvement would be in artificial intelligence. For example, the incorporation of more advanced machine learning or AI capabilities could enhance its functionality."

"I would like to have more than 4TB of storage available in the portable version of this solution."

"Graphics need improvement. Because a lot of the information there you have to input first in some case to have full potential. It could be more automated."

Pricing and Cost Advice

"Fortinet FortiSIEM is cheaper compared to other products."

"There are additional features that cost more than the standard licensing fees."

"The solution is available for both, perpetual and subscription licenses."

"Pricing is acceptable for more than 90% of our customers, as they normally get discounts."

"The price of the solution is expensive. The license is scalable. If there are 10 devices it is simple to license."

"Fortinet FortiSIEM is not an expensive solution."

"We bought the perpetual license, so we own the product, but there is a three-year support renewal fee for that."

"The price of Fortinet FortiSIEM is a lot less when compared to other solutions."

More Fortinet FortiSIEM pricing and cost advice

"It's quite expensive."

"It depends on the requirements you have. There are three types of license. There's the updates license, the work group license, and the workstation license."

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Top Industries

By visitors reading reviews

Computer Software Company

11%

Financial Services Firm

Comms Service Provider

Government

Financial Services Firm

17%

Computer Software Company

11%

Manufacturing Company

Wholesaler/Distributor

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	34
Midsize Enterprise	22
Large Enterprise	24

By reviewers
Company Size	Count
Small Business	5
Large Enterprise	3

Questions from the Community

What do you like most about Fortinet FortiSIEM?

Fortinet FortiSIEM needs to provide better API integrations to users.

See all answers

What is your experience regarding pricing and costs for Fortinet FortiSIEM?

My experience with pricing, setup cost, and licensing for Fortinet FortiSIEM is wonderful, as it offers an excellent license compared to other vendors.

See all answers

What needs improvement with Fortinet FortiSIEM?

Fortinet FortiSIEM is great overall. Performance could be enhanced, but I do not wish to elaborate on needed improvements.

See all answers

What do you like most about Observer GigaStor?

See all answers

What is your experience regarding pricing and costs for Observer GigaStor?

I would rate the pricing a ten out of ten. It's quite expensive.

See all answers

What needs improvement with Observer GigaStor?

GigaStor feeds into Apex. So, the area where there could be improvement would be in artificial intelligence. For example, the incorporation of more advanced machine learning or AI capabilities coul...

See all answers

Comparisons

IBM Security QRadar vs Fortinet FortiSIEM

Compared 9% of the time

Splunk Enterprise Security vs Fortinet FortiSIEM

Compared 9% of the time

Wazuh vs Fortinet FortiSIEM

Compared 7% of the time

ManageEngine Log360 vs Fortinet FortiSIEM

Compared 6% of the time

LogRhythm SIEM vs Fortinet FortiSIEM

Compared 5% of the time

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Wireshark vs Observer GigaStor

Compared 17% of the time

Gigamon Deep Observability Pipeline vs Observer GigaStor

Compared 15% of the time

Viavi Observer Platform vs Observer GigaStor

Compared 11% of the time

AppNeta by Broadcom vs Observer GigaStor

Compared 8% of the time

NETSCOUT nGeniusONE vs Observer GigaStor

Compared 8% of the time

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Product Reports

Buyer's Guide

Fortinet FortiSIEM

January 2026

Download Fortinet FortiSIEM product report

Buyer's Guide

Observer GigaStor

December 2025

Download Observer GigaStor product report

Also Known As

FortiSIEM, AccelOps

No data available

Overview

FortiSIEM (formerly AccelOps 4) provides an actionable security intelligence platform to monitor security, performance and compliance through a single pane of glass.

Companies around the world use FortiSIEM for the following use cases:

Threat management and intelligence that provide situational awareness and anomaly detection
Alleviating compliance mandate concerns for PCI, HIPAA and SOX
Managing “alert overload”
Handling the “too many tools” reporting issue
Addressing the MSPs/MSSPs pain of meeting service level agreements

Fortinet

Observer GigaStor is a network analysis tool that comes in a variety of form factors, including rack mount, portable, and virtual. Capable of storing up to a petabyte of traffic for later analysis, GigaStor helps ensure optimal network and application performance.

Viavi Solutions

Sample Customers

FortiSIEM has hundreds of customers worldwide in markets including managed services, technology, financial services, healthcare, and government. Customers include Aruba Networks, Compushare, Port of San Diego, Cleveland Indians, Infoblox, Healthways, and Referentia.

Cisco Systems, Hawaiian Telecom, Renown Health, State of Nevada, U.S. Department of Veteran Affairs, Allstate Insurance, Jack Henry & Associates, United States Airforce, US Bank, Blue Cross Blue Shield of Minnesota, Texas Tech University Health Sciences Center, Chicago Board Options Exchange

Buyer's Guide

Fortinet FortiSIEM vs. Observer GigaStor

May 2020

Free Report: Fortinet FortiSIEM vs. Observer GigaStor

Find out what your peers are saying about Fortinet FortiSIEM vs. Observer GigaStor and other solutions. Updated: May 2020.

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See our Fortinet FortiSIEM vs. Observer GigaStor report.

We monitor all Security Information and Event Management (SIEM) reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.