Clustering -
Scaling
Can I extend an
already created cluster?
Yes, extending a cluster is supported up to 15 nodes.
What happens if a
non-primary platform VM becomes unavailable?
Internal services have
limited resiliency to non-primary node failures. In general, due to a node
failure NI loses compute power.
What kind of load
balancing is supported?
Mapping of collector to platform is fixed. Once data
from any collector VM reaches any platform VM, its processing is load-balanced
internally among all the platform VMs.
Will creating a
platform cluster increase bandwidth consumption?
The collector VMs continue to talk only to primary or
platform VM. The bandwidth requirement for platform VM clustering communication is
minimal. Therefore there is no significant increase in bandwidth consumption.
What is the frequency of data transmission
between collector VM to platform VM?
The collector VM sends the deduplicated or compressed
data continuously to the platform VM.
Does any optimization of data take place in the
collector VM?
Various deduplications, compressions, reduction, or
batching steps happen in the collector VM. When the connection between the platform
VM and the collector VM is down, the collector VM stores data locally (depending on
the disk space) and sends it whenever the connection is restored.
Is there any
optimization done for network bandwidth?
Yes, various
deduplication/compressions/reduction/batching steps happen on the collector VM.
Is clustering possible on the collector
servers?
No. Clustering is not possible on the collector
servers.
How does vCenter send traffic to the collector
server?
vCenters do not send traffic to the collector server.
The collector servers actually connect to their designated vCenter to fetch the
information.
When deploying a cluster , how does vCenter
send traffic to the various collector servers?
Actually proxies get connected to vCenter to fetch the
information. Respective collector will connect to designated vCenter & fetch the
information. There is no clustering available on collector.