Release Notes

Dell PowerEdge R730xd Performance and Sizing Guide for Red Hat Ceph Storage - A Dell Red Hat Technical White Paper 33
4.4 Comparing Server Throughput in Replication vs. Erasure-coded
Keeping everything else constant, replicated reads perform much better than erasure-coded reads.
However, erasure-coded writes perform better than replicated writes.
Comparison of server throughput in replication vs. erasure-coded modes
0 200 400 600 800 1000 1200 1400
R730xd16r+1,3xRep
R730xd16j+1,3xRep
R730XD16+1,EC3+2
R730xd16+1,EC8+3
MBpsperServer(4MBseqIO)
PerformanceComparison
Replicationvs.Erasure‐coding
Writes
Reads