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Cheap Samsung SM961 NVMe VROC RAID SSD Performance (Page 3)

By Chris Ramseyer from May 29, 2019 @ 22:00 CDT

Workload Performance Testing

Moving over to the server workload tests, we will see many of the same traits carry over from the pure synthetic workloads. The difference is tests that are more relevant and a better comparison to the control drive (2TB Intel DC P4510).

Database Workload


The 1TB SM961 in VROC puts on a dominant performance in the database test at high queue depths. Two of the other configurations level off around 70,000 IOPS in this workload. The 256GB VROC configurations also scores well as does the 1TB drive in the optimized configuration.

OLTP Workload


We see similar performance in the OLTP test, one that is similar to the database test just with larger block sizes. The one thing that we can take away here is that the 256GB VROC configuration still delivers more consistent performance than the 1TB VROC configuration.

Email Workload


The email workload really just shows more of the same. The VROC configurations show strong performance that the JBOD configurations simply can't match. In addition, the 1TB SM961 array is faster than the 256GB drive array.

Archive Workload


The archive test comes from Dell's performance laboratory and is one of my personal favorites. The test users a wide range of block sizes as well as mixed random, sequential, reads, and writes. The archive test best represents my storage server's workload. If I didn't run a NAS, that data would go to internal storage.

All of the tests run today show more consistent performance than the network storage we test. Again, we found the same performance order with the 1TB SM961 VROC configuration outperforming the others. The 256GB SM961 VROC configuration trails slightly but still outperforms the 1TB SM961 JBOD optimized configuration.

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