vSAN Performance Charts

[M4T]

Hi community,

would someone be able to explain what these performance charts mean for vSAN so I get a better understanding of what to look at.

For Cluster

VM

- IOPS

- Throughput

- Latency

- Congestions

- Outstanding IO

For Hosts

Disks

- Frontend (Guest) IOPS

- Frontend (Guest) Throughput

- Frontend (Guest) Latency

- Overhead IOPS

- Overhead IO Latency

- Read Cache Hit Rate

- Evictions

- Write Buffer Free Percentage

- Capacity & Usage

- Cache Disk De-stage Rate

- Congestions

- Outstanding IO

- Outstanding IO Size

- Delayed IO Percentage

- Delayed IO Average Latency

- Delayed IOPS

- Delayed IO Throughput

- Resync IOPS

- Resync Throughput

- Resync Latency

Matto

[TheBobkin · Accepted solution]

Hello Matto

Most of them are fairly self-explanatory or generic e.g. 'IOPS' 'latency'.

These can be found online on docs.vmware in the relevant sub-categories e.g.:

View vSAN Host Performance

View vSAN Cluster Performance

and  altogether here:

https://docs.vmware.com/en/VMware-vSphere/6.7/vsan-671-monitoring-troubleshooting-guide.pdf

Bob

[M4T]

hi bob,

can you change the intervals of the charts for eg; instead of it being every 5 mins can you change it to say 1 min or 2 min for eg.

matto

[TheBobkin]

Hello Matto,

No, there is no way of changing the interval period.

Bob