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Dell HPC NFS Storage Solution High Availability (NSS-HA) Configurations with Dell PowerEdge 12th
Generation Servers
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mdtest benchmark and include file create, stat and remove operations. Refer to Appendix A for the
complete command lines used in the tests.
5.1. IPoIB sequential writes and reads
This section compares the random write and read performance between the current NSS4-HA release
with a Dell PowerEdge R620 server and the previous NSS3-HA release
(3)
with a Dell PowerEdge R710
server. The only difference between the tests for the two releases is that the total amount of data for
I/O was 256GB to eliminate the cache effect for the current test, while the amount was set to 128GB
when testing the previous NSS-HA release (which had only 48 GB installed during the tests). The storage
hardware and software versions used for the two solutions is identical; the only update in server
hardware is the use of the Dell PowerEdge R620 as a NFS server instead of the Dell PowerEdge R710.
Due to the many powerful features of the Dell PowerEdge R620 listed in Dell PowerEdge R620 vs. Dell
PowerEdge R710, the current NSS-HA release gains a huge read performance improvement, about 75
percent increment on average, and the maximum read performance is up to 4058 GB/sec. However,
the write performance does not change much between the current and previous release, as the RAID6
write performance is largely determined by the storage system itself (disk drives in the storage
subsystem are configured with RAID6).
Figure 5 and Figure 6 show the sequential write and read performance, respectively.
Note: Figure 5 and Figure 6 just give the measured maximum performance numbers for each client
case. The actual performance number depends on many factors including but not limited to number of
clients, file size, switch used, and firmware and driver versions.
IPoIB large sequential write performance: NSS4-HA vs. NSS3-HA Figure 5.
0
200
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600
800
1000
1200
1400
1600
1800
1 2 4 8 16 32 48 64
Throughput in MB/s
Number of concurrent clients
InfiniBand large sequential write performance
NSS4-HA
NSS3-HA