8.0

Table Of Contents
Table 4-5. Recommendations for Enhanced Performance (continued)
System Element Recommendation
Processors Faster processors improve ESXi performance. For certain
workloads, larger caches improve ESXi performance.
Hardware compatibility Use devices in your server that are supported by
ESXi drivers. See the
Hardware
Compatibility
Guide
at
http://www.vmware.com/resources/compatibility.
Incoming and Outgoing Firewall Ports for ESXi Hosts
The vSphere Client, vSphere Web Client, and VMware Host Client allow you to open and close
firewall ports for each service or to allow traffic from selected IP addresses.
ESXi includes a firewall that is enabled by default. At installation time, the ESXi firewall is
configured to block incoming and outgoing traffic, except traffic for services that are enabled
in the host's security profile. For the list of supported ports and protocols in the ESXi firewall, see
the VMware Ports and Protocols Tool
at https://ports.vmware.com/.
The VMware Ports and Protocols Tool lists port information for services that are installed by
default. If you install other VIBs on your host, additional services and firewall ports might become
available. The information is primarily for services that are visible in the vSphere Client and
vSphere Web Client but the VMware Ports and Protocols Tool includes some other ports as well.
Required Free Space for System Logging
If you used Auto Deploy to install your ESXi 8.0 host, or if you set up a log directory separate from
the default location in a scratch directory on the VMFS volume, you might need to change your
current log size and rotation settings to ensure that enough space is available for system logging .
All vSphere components use this infrastructure. The default values for log capacity in this
infrastructure vary, depending on the amount of storage available and on how you have
configured system logging. Hosts that are deployed with Auto Deploy store logs on a RAM disk,
which means that the amount of space available for logs is small.
If your host is deployed with Auto Deploy, reconfigure your log storage in one of the following
ways:
n Redirect logs over the network to a remote collector.
n Redirect logs to a NAS or NFS store.
If you redirect logs to non-default storage, such as a NAS or NFS store, you might also want to
reconfigure log sizing and rotations for hosts that are installed to disk.
You do not need to reconfigure log storage for ESXi hosts that use the default configuration,
which stores logs in a scratch directory on the VMFS volume. For these hosts, ESXi 8.0 configures
logs to best suit your installation, and provides enough space to accommodate log messages.
VMware ESXi Installation and Setup
VMware, Inc. 22