# Increasing Availability for a Kafka Cluster

**URL:** <https://forum.confluent.io/t/increasing-availability-for-a-kafka-cluster/7591>\
**Category:** Architecture and Design\
**Created:** [8 April 2023 17:00 UTC](https://forum.confluent.io/t/increasing-availability-for-a-kafka-cluster/7591 "2023-04-08T17:00:40Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Rsrch100](https://avatars.discourse-cdn.com/v4/letter/r/ce73a5/32.png) [@Rsrch100](https://forum.confluent.io/u/Rsrch100)\
**Post date:** [8 April 2023 17:00 UTC](https://forum.confluent.io/t/increasing-availability-for-a-kafka-cluster/7591/1 "2023-04-08T17:00:40Z")

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Hi,

Currently we are running a Kafka Cluster with the 3 brokers. Replication factor of 3 and minimum in-sync replicas at 2. I am planning to add a new broker and increase the replication factor to 4 while keeping the in-sync replicas at 2.

What are your thoughts on this? I am approaching this correctly?  
Out of curiosity, can you describe your current Kafka deployment?

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**Author:** ![OneCricketeer](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.confluent.io/onecricketeer/32/1551_2.png) [@OneCricketeer](https://forum.confluent.io/u/OneCricketeer)\
**Post date:** [12 September 2023 09:37 UTC](https://forum.confluent.io/t/increasing-availability-for-a-kafka-cluster/7591/2 "2023-09-12T09:37:58Z")

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Nothing wrong with this, unless you’re also running Zookeeper on that note. Zookeeper clusters prefer to have odd numbered instances.