6.3

n
All vRealize Operations Manager cluster nodes, including remote collectors, must be vApp or Linux
based. vRealize Operations Manager for Windows does not support IPv6.
n
Use global IPv6 addresses only. Link-local addresses are not supported.
n
If any nodes use DHCP, your DHCP server must be congured to support IPv6.
n
DHCP is only supported on data nodes and remote collectors. Master nodes and replica nodes still
require xed addresses, which is true for IPv4 as well.
n
Your DNS server must be congured to support IPv6.
n
When adding nodes to the cluster, remember to enter the IPv6 address of the master node.
n
When registering a VMware vCenter
®
instance within vRealize Operations Manager, place square
brackets around the IPv6 address of your VMware vCenter Server
®
system if vCenter is also using IPv6.
For example: [2015:0db8:85a3:0042:1000:8a2e:0360:7334]
Note that, even when vRealize Operations Manager is using IPv6, vCenter Server may still have an IPv4
address. In that case, vRealize Operations Manager does not need the square brackets.
n
You cannot register an Endpoint Operations Management agent in an environment that supports both
IPv4 and IPv6. In the event that you aempt to do so, the following error appears:
Connection failed. Server may be down (or wrong IP/port were used). Waiting for 10 seconds
before retrying.
Sizing the vRealize Operations Manager Cluster
The resources needed for vRealize Operations Manager depend on how large of an environment you expect
to monitor and analyze, how many metrics you plan to collect, and how long you need to store the data.
It is dicult to broadly predict the CPU, memory, and disk requirements that will meet the needs of a
particular environment. There are many variables, such as the number and type of objects collected, which
includes the number and type of adapters installed, the presence of HA, the duration of data retention, and
the quantity of specic data points of interest, such as symptoms, changes, and so on.
VMware expects vRealize Operations Manager sizing information to evolve, and maintains Knowledge Base
articles so that sizing calculations can be adjusted to adapt to usage data and changes in versions of
vRealize Operations Manager.
Knowledge Base article 2093783
The Knowledge Base articles include overall maximums, plus spreadsheet calculators in which you enter the
number of objects and metrics that you expect to monitor. To obtain the numbers, some users take the
following high-level approach, which uses vRealize Operations Manager itself.
1 Review this guide to understand how to deploy and congure a vRealize Operations Manager node.
2 Deploy a temporary vRealize Operations Manager node.
3 Congure one or more adapters, and allow the temporary node to collect overnight.
4 Access the Cluster Management page on the temporary node.
5 Using the Adapter Instances list in the lower portion of the display as a reference, enter object and
metric totals of the dierent adapter types into the appropriate sizing spreadsheet from Knowledge
Base article 2093783.
6 Deploy the vRealize Operations Manager cluster based on the spreadsheet sizing recommendation. You
can build the cluster by adding resources and data nodes to the temporary node or by starting over.
If you have a large number of adapters, you might need to reset and repeat the process on the temporary
node until you have all the totals you need. The temporary node will not have enough capacity to
simultaneously run every connection from a large enterprise.
Chapter 1 Preparing for vRealize Operations Manager Installation
VMware, Inc. 15