Bluestore Hardwaresetup

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Hi everybody,

I want to evaluate ceph with bluestore, so I need some hardware/configure advices from you. 

My Setup should be:

3 Nodes Cluster, on each with:

- Intel Gold Processor SP 5118, 12 core / 2.30Ghz
- 64GB RAM
- 6 x 7,2k, 4 TB SAS
- 2 x SSDs, 480GB

On the POSIX FS you have to set your journal on SSDs. What is the best way for bluestore? 

Should I configure separate SSDs for block.db and block.wal?

Is there a way to use CacheTiering or a cachepool? 

Thanks in advance

Peter


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