VSAN-Troubleshooting-Reference-Manual

Diagnostics and Troubleshooting Reference Manual – Virtual SAN
Navigating VSAN Observer - VSAN (More) – Distribution
The Distribution tab shows how well Virtual SAN is balancing the objects (VM
Home Namespaces, VMDKs, delta disks) and components (stripes, replicas,
witnesses) across hosts in the cluster. The components are distributed across hosts
in the cluster. Each host in version 5.5 has a 3000 component limit. In Virtual SAN
6.0, hosts with a v1 on-disk version continue to have the 3000 component limit, but
those with a v2 on-disk format have a 9000 component limit per host. Balancing
components across the cluster is an important side effect of balancing for
performance and space.
Components includes both I/O components as well as witnesses.
IO Components excludes witnesses and just showns how I/O components
are balanced.
DOM owners are in-memory states inside VSAN, showing the distribution of
object owners around the cluster. This is something that the user can't
control.
DOM Clients are in-memory states inside VSAN, showing the distribution of
object clients around the cluster. This is something that the user can't
control.
DOM Colocated – are in-memory states inside VSAN, showing where both
the client and owner are co-located on the same host. This is something that
the user can't control.
Distribution metrics are not tuneable. The information is shown here is
primarily for the benefit of VMware Support.
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