This document is already 3 years old, and a lot of versions and enhancements have been passed meanwhile.
Please raise a support case to get an official answer on this. Support can help you do the sizing.
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Bart Bogaerts
Client Engineering - Technology Engineer
IBM Belgium
Brussels
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Original Message:
Sent: Mon June 02, 2025 09:19 AM
From: Henda Salhi
Subject: Instana sizing
Same for me, but in the sizing document in Seismic, they are mentioning the below which does not make sense.

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Henda Salhi
Original Message:
Sent: Mon June 02, 2025 09:07 AM
From: Bart Bogaerts
Subject: Instana sizing
This makes most sense to me:
Maximum of Reporting Entities = (#Hosts + #Containers ) * #Sensors
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Bart Bogaerts
Client Engineering - Technology Engineer
IBM Belgium
Brussels
Original Message:
Sent: Mon June 02, 2025 04:47 AM
From: Henda Salhi
Subject: Instana sizing
Thanks Bart,
I have a doubt regarding the formula, it's
Maximum of Reporting Entities = #Hosts + ( #Containers * #Sensors ).
or
Maximum of Reporting Entities = (#Hosts + #Containers ) * #Sensors .
Thanks.
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Henda Salhi
Original Message:
Sent: Mon June 02, 2025 02:36 AM
From: Bart Bogaerts
Subject: Instana sizing
'Hosts' corresponds to each physical or virtual host on which you install an Instana agent.
'Containers' is indeed the number of monitored containers.
'Sensors' is the number of active sensors, i.e. sensors that correspond to a running application or technology on a host agent.
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Bart Bogaerts
Client Engineering - Technology Engineer
IBM Belgium
Brussels
Original Message:
Sent: Thu May 29, 2025 10:53 AM
From: Henda Salhi
Subject: Instana sizing
Hello, I want to do a sizing for Instana on-prem, I'm wondering how to calculate the Maximum of Reporting Entities, I can see it's as below:
Maximum of Reporting Entities = #Hosts + #Containers * #Sensors .
Can anyone explain what does it mean exactly hosts, containers, sensors ?
Host is the physical machines or VM?
Containers are the number of containers that Instana will monitor ?
Sensors are the apps that instana will monitor ?
Thanks.
#General
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Henda Salhi
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