To install VMware ESXi 6.5 or upgrade VMware ESXi 6.0 to ESXi 6.5, use the VMware File System version 5 (VMFS5).
Important Considerations Before
Read the following information carefully before you proceed
with the installation:
Unified CCX can only be installed on virtual machines and not on
bare metal servers.
DNS configuration and domain fields are mandatory for Unified CCX
installation. Both forward and reverse lookups are required. DNS is required
Unified CCX Chat feature to function and for integration with
ICM by hostname in Unified IP IVR.
When you Install Unified CCX on an existing server formats the
hard drive, it overwrites all existing data on the drive. It also upgrades the
system BIOS, firmware, and Redundant Array of Inexpensive Disks (RAID)
configuration if they are outdated.
Ensure that you connect each Unified CCX node to an
uninterruptible power supply (UPS). This protects the Unified CCX server from
unexpected power failure that damages the physical media.
All servers in a cluster must run the same release of Unified CCX.
The only exception is while upgrading cluster software, during which a
temporary mismatch is allowed.
Configure the server by using a static IP address so that the
server IP address remains unchanged.
Do not attempt to perform any configuration tasks during the
The field values (namely hostname and passwords) that you enter
while you are running the installation program are case-sensitive. Hostname
must be in lower case and the character limit is 24 characters.
Ensure that the administrator username is not the same as that of
any end user in CUCM.
When you insert or remove a USB drive, you might see error
messages on the console similar to
"sdb: assuming drive cache: write through." You can safely
ignore these messages.
Ensure that the third-party web services support TLS version 1.2
before you integrate any third-party web services.
If the system
time is from an Network Time Protocol (NTP) server (mandatory for VMware
deployments), verify that the first node synchronizes with the NTP server
before you install a second node.
If the first
node fails to synchronize with an NTP server, installation of a second node
firewall is in the routing path, disable the firewall between nodes. Increase
the firewall timeout settings until you complete the installation.
network interface card (NIC) speed and duplex settings of the switch port to
which you will connect the new server.
PortFast on all switch ports that are connected to Cisco servers.
Do not run
Network Address Translation (NAT) or Port Address Translation (PAT) between
license file. For more information, see
Obtain License MAC Before Installation.