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 8.1, and holds a 3.3% mindshare in the category. Viavi Solutions is ranked #94 in NMS , and holds a 0.2% mindshare. Additionally, 82% of Fortinet users are willing to recommend the solution, compared to 100% of Viavi Solutions users who would recommend it.

Fortinet FortiSIEM

Read 75 Fortinet FortiSIEM reviews

5,537 Views
4,042 Comparison Views

82% willing to recommend

Observer GigaStor

Read 7 Observer GigaStor reviews

624 Views
300 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 871,829 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

5.8

Number of Reviews

Ranking in other categories

Security Information and Event Management (SIEM) (7th)

Observer GigaStor

Average Rating

9.0

Reviews Sentiment

8.1

Number of Reviews

Ranking in other categories

Network Monitoring Software (94th), 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 3.3%, up 2.9% compared to last year.
Observer GigaStor, on the other hand, focuses on Network Monitoring Software, holds 0.2% mindshare, up 0.2% since last year.

Security Information and Event Management (SIEM) Market Share Distribution
Product	Market Share (%)
Fortinet FortiSIEM	3.3%
Wazuh	10.2%
Splunk Enterprise Security	9.2%
Other	77.3%

Security Information and Event Management (SIEM)

Network Monitoring Software Market Share Distribution
Product	Market Share (%)
Observer GigaStor	0.2%
Zabbix	11.4%
SolarWinds NPM	4.4%
Other	84.0%

Network Monitoring Software

Featured Reviews

Oliver Jackson

Network Engineer at Laminar Communications Pty Ltd

Systems monitoring enhanced by firewall and intrusion detection features

My primary use case for Fortinet FortiSIEM is systems monitoring and alerting. I use it for standard functions like log monitoring, incident detection, and notification. My customers are mostly medium-sized enterprises ranging from engineering companies, mining companies, independent schools, and…

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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

"Fortinet FortiSIEM is less costly than other products and is available 24/7."

"The primary valuable feature is that it has replaced a whole lot of other products with one platform."

"Our customer did not have security monitoring in the first place. With this solution, it provided security posture management and visibility about the security landscape and threats that they had."

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

"The most fascinating aspect of FortiSIEM is its integration with the MITRE ATT&CK framework."

"FortiSIEM sends an email or SMS notifications to admins when there are significant incidents. It's a highly efficient way of responding to incidents."

"To add workers and even collectors is pretty easy."

"FortiSIEM is a great tool for making security processes transparent."

More Fortinet FortiSIEM pros

"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"

"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."

"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."

"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."

Cons

"When an alert triggers in Fortinet FortiSIEM, the layout or format can feel limited"

"Network detection and response is a separate product."

"The log collection and configuration management are not great."

"Their technical support is horrible. By horrible, I mean a train wreck of a disaster that has fallen off a bridge and caught fire."

"The built-in APIs in Fortinet FortiSIEM are somewhat lacking and could be improved for better integration with external ITSM products."

"The dashboards need to be improved. It gives you so much detail, but sometimes too much detail, especially to an executive, it's too much."

"Our team tried configuring MS SQL database logs with Fortinet FortiSIEM, but it did not work for some time."

"They need to integrate better with Cisco and Palo Alto."

More Fortinet FortiSIEM cons

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

"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."

"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

"There is a need to make yearly payments towards the licensing charges attached to the product. The free version license of the product is available for two months."

"The price of Fortinet FortiSIEM was reasonable compared to other solutions."

"The price is competitive."

"We pay for a license for FortiSIEM. We pay for the license and renewal."

"Fortinet FortiSIEM is very cost-efficient compared to other SIEM solutions."

"This is probably more on the lower cost end of the spectrum compared to competing products. Fortinet's license model is based on events per second, which makes sense, but that's not typical. It makes it very hard to calculate what your costs are going to be as you scale the platform because some log sources, such as firewall logs, are very noisy, and there are lots and lots of events per second, but some of them are not. So, it becomes a bit of a science experiment trying to guess what your costs are going to be as you scale the solution. This is where other competing products perhaps have a more straightforward license model."

"They have a yearly subscription."

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

More Fortinet FortiSIEM pricing and cost advice

"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."

"It's quite expensive."

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Top Industries

By visitors reading reviews

Computer Software Company

13%

Financial Services Firm

Comms Service Provider

Manufacturing Company

Financial Services Firm

17%

Computer Software Company

14%

Manufacturing Company

10%

Insurance Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	34
Midsize Enterprise	21
Large Enterprise	23

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?

I am not familiar with the price and cost of Fortinet FortiSIEM. I cannot tell you if it is high, expensive, or low. However, I can say that it is cost-effective as it provides everything needed.

See all answers

What needs improvement with Fortinet FortiSIEM?

Regarding Fortinet FortiSIEM, I cannot identify any specific areas for improvement because I can find everything I need. For the time being, I cannot find a real point for improvement. Everything i...

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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

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Compared 11% of the time

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Compared 11% of the time

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Compared 10% of the time

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Compared 7% of the time

LogRhythm SIEM vs Fortinet FortiSIEM

Compared 5% of the time

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Compared 27% of the time

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Compared 20% of the time

NETSCOUT nGeniusONE vs Observer GigaStor

Compared 15% of the time

AppNeta by Broadcom vs Observer GigaStor

Compared 12% of the time

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Compared 12% of the time

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Product Reports

Buyer's Guide

Fortinet FortiSIEM

October 2025

Download Fortinet FortiSIEM product report

Buyer's Guide

Observer GigaStor

October 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.