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What is the size of a Cassandra Datapoint?

Solved884 views17th July 2023Cassandra EPM
0
Arturo Lizcano [SLC] [DevOps Member]385 23rd November 2021 0 Comments

I need to do some calculations to know the storage requirements for an EPM environment in which the trending will be enabled in some CM parameters. To achieve that, I require how much space occupies a single data point to extrapolate the rest.

I’ve searched the Cassandra documentation but I think this is not something defined by the DB architecture but rather how much info does Dataminer sends to it?

Marieke Goethals [SLC] [DevOps Catalyst] Selected answer as best 17th July 2023

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Bert Vandenberghe [SLC] [DevOps Enabler]8.30K Posted 23rd November 2021 0 Comments

Hi Arturo,

The node calculator (DataMiner Node Calculator – DataMiner Dojo) uses 200 bytes for one trend record.

PS: the replication factor of Cassandra also needs to be taken in to account.

Bert

Marieke Goethals [SLC] [DevOps Catalyst] Selected answer as best 17th July 2023
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