Specifications

DNS Requirements for vSphere
You install vCenter Server, like any other network server, on a machine with a fixed IP address and well-
known DNS name, so that clients can reliably access the service.
Assign a static IP address and host name to the Windows server that will host the vCenter Server system.
This IP address must have a valid (internal) domain name system (DNS) registration.
Ensure that the ESXi host management interface has a valid DNS resolution from the vCenter Server and all
vSphere Clients and vSphere Web Clients. Ensure that the vCenter Server has a valid DNS resolution from
all ESXi hosts and all vSphere Clients and vSphere Web Clients.
Ensure that the vCenter Server is installed on a machine that has a resolvable fully qualified domain name
(FQDN). To check that the FQDN is resolvable, type nslookup your_vCenter_Server_fqdn at a command line
prompt. If the FQDN is resolvable, the nslookup command returns the IP and name of the domain controller
machine.
Ensure that DNS reverse lookup returns a fully qualified domain name when queried with the IP address of
the vCenter Server. When you install vCenter Server, the installation of the web server component that
supports the vSphere Client fails if the installer cannot look up the fully qualified domain name of the
vCenter Server from its IP address. Reverse lookup is implemented using PTR records. To create a PTR
record, see the documentation for your vCenter Server host operating system.
If you use DHCP instead of a static IP address for vCenter Server, make sure that the vCenter Server
computer name is updated in the domain name service (DNS). Ping the computer name to test the
connection. For example, if the computer name is host-1.company.com, run the following command in the
Windows command prompt:
ping host-1.company.com
If you can ping the computer name, the name is updated in DNS.
Supported Remote Management Server Models and Minimum
Firmware Versions
You can use remote management applications to install ESXi or for remote management of hosts.
Table 3‑14. Supported Remote Management Server Models and Firmware Versions
Remote Controller Make and
Model Firmware Version Java
Dell DRAC 6 1.54 (Build 15), 1.70 (Build 21) 1.6.0_24
Dell DRAC 5 1.0, 1.45, 1.51 1.6.0_20,1.6.0_203
Dell DRAC 4 1.75 1.6.0_23
HP ILO 1.81, 1.92 1.6.0_22, 1.6.0_23
HP ILO 2 1.8, 1.81 1.6.0_20, 1.6.0_23
IBM RSA 2 1.03, 1.2 1.6.0_22
Update Manager Hardware Requirements
You can run Update Manager on any system that meets the minimum hardware requirements.
Minimum hardware requirements for Update Manager vary depending on how Update Manager is
deployed. If the database is installed on the same machine as Update Manager, requirements for memory
size and processor speed are higher. To ensure acceptable performance, verify that your system meets the
minimum hardware requirements.
Chapter 3 System Requirements
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