Ceph - Write speed
- Thread starter AndreCast
- Start date
Do you have 3 sata ssds per node or in total so only 1 per node? Ceph performance heavily depends on network and also needs some ram/cpu to work good . Usually you should not go below 10Gbit/s network for ceph. Theoretical you cant archieve better then 100MB/s (1GBit/s is maximal 100MB/s) You also need to think about replication factor, so data needs to be written twice until a ACK comes to a write in ceph storage. So 2 of 3 repliacs need to be writen, and every write goes over the network.
Whats the reason to go for ceph for you personally?
In this test i used 1 ssd for each node.
my question was only for understand the theory behind ceph: assuming there ins't limit from network, how can i calculate the "nominal" read/write speed?
this is only a test to evaluate the best choice between ceph and a nas synology HA.
thank you!
my question was only for understand the theory behind ceph: assuming there ins't limit from network, how can i calculate the "nominal" read/write speed?
this is only a test to evaluate the best choice between ceph and a nas synology HA.
thank you!