I am running HCIbench on a newly deployed homogeneous stretched cluster made of 14 cisco UCS c240M5 each with 2 disk groups each ( 400GB cache 5x1.9TB capacity all flash) w/ 2 10Gb VICs 2 fault domains (7 nodes on each site). Running on esxi 6.7. The site to site latency is between 1-3ms.
I am using the Easy run builtin test (56VMs total with 8vmdk-100ws-4k-70rdpct-100random-4threads) for vsan and these are the results i am getting while testing a VM storage policy with PFTT=1, SFTT=1, Raid5. Deduplication and compression are enabled.
Are these latency numbers expected for this config/test.
Datastore: vsanDatastore
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Run Def: RD=run1; I/O rate: Uncontrolled MAX; elapsed=3600 warmup=1800; For loops: None
VMs = 56
IOPS = 241033.10 IO/s
THROUGHPUT = 941.55 MB/s
LATENCY = 7.4583 ms
R_LATENCY = 5.3595 ms
W_LATENCY = 12.3659 ms
95%tile_LAT = 16.0863 ms
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Resource Usage:
CPU USAGE = 26.76%
RAM USAGE = 10.69%
VSAN PCPU USAGE = 9.773%
