Designing ceph cluster

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Dear Ceph Users,


I need your help to redesign my ceph storage network.

As suggested in earlier discussions, i must not use SAN storage. So we have decided to removed it.

Now we are ordering Local HDDs.

My Network would be

Host1 --> Controller + Compute1 Host 2--> Compute2 Host 3 --> Compute3

Is it right setup for ceph network? For Host1 and Host2 , we are using 1 500GB disk for OS on each host .

Should we use same size storage disks 500GB *8 for ceph environment or i can order Disks in size of 2TB for ceph cluster?

Making it

2T X 2 on Host1 2T X 2 on Host 2 2T X 2 on Host 3

12TB in total. replication factor 2 should make it 6 TB?

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