White Papers

Dell HPC NFS Storage Solution High Availability Configurations with Large Capacities
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With IPoIB, sequential reads were found to be up to 22% better with NFSv4 while sequential write
throughput is was up to 22% worse with NFSv4.This is shown in Figure 19 for a 288TB configuration. The
144TB configuration shows a similar trend.
InfiniBand NFSv3 and NFSv4 sequential performance Figure 19.
InfiniBand NFSv3 and NFSv4 random performance Figure 20.
Figure 20 shows the difference in random performance between NFSv3 and NFSv4 for a 288TB
configuration. For IPoIB random write operations, NFSv4 was better by 5% to 23%. On random read
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Throughput in MB/s
Number of concurrent clients
IB large sequential performance - v3 vs. v4 - 288TB
288 TB - write - NFSv3 288 TB - read - NFSv3
288 TB - write - NFSv4 288 TB - read - NFSv4
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IOPS
Number of concurrent clients
IB Random performance - v3 versus v4 - 288TB
288 TB - NFSv3 - write 288 TB - NFSv3 - read
288 TB - NFSv4 - write 288 TB - NFSv4 - read