Release Notes

Dell PowerEdge R730xd Performance and Sizing Guide for Red Hat Ceph Storage - A Dell Red Hat Technical White Paper 34
4.5 Comparing Server Throughput in JBOD and RAID0 Modes
The R730xd configurations in this study used the PERC H730 RAID controller. Ceph OSDs are typically
configured in a 1:1 ratio with HDDs. Therefore, the RAID controller can either be configured in JBOD
mode or with each HDD as single-drive RAID0 volumes.
Summary: RAID0 configurations provide better throughput than JBOD configurations. Therefore, we
recommend that R730xd PERC H730 controllers be configured in single-drive RAID0 mode when used
with Ceph Storage.
Comparison of server throughput in JBOD vs. RAID0 modes
1153
1147
393
342
0 200 400 600 800 1000 1200 1400
R730XD16RAID+1,3xRep
R730XD16JBOD+1,3xRep
MBpsperServer(4MBseqIO)
PerformanceComparison
JBODvs.RAID0Config
Writes
Reads