On my VSAN 6.2 test cluster I've noticed significantly slower sequential write speeds, from 1000+MB/s down to 250MB/s, enough where the built in health stress test begins to fail from failed writes. After tracing it, it looks like disabling the new checksum feature restores my sequential write speeds. Has anyone else seen similar results from leaving the checksum feature on? CPU utilization on hosts are only around 10% utilization when I run tests.
5xDell R730xd, disk groups are 2xP3700 1.6TB SSDs, 14x4TB WD RE4 SAS drives, 384GB RAM, E5-2650v3.
