6.0

Upgrading vSphere Replication from Earlier Product Versions
You can upgrade vSphere Replication 5.5.x and 5.8 to vSphere Replication 6.0.
To upgrade a previously installed version of vSphere Replication to vSphere Replication for
Disaster Recovery to Cloud, you must mount the vSphere Replication ISO file on a system in your
environment that is accessible from the vSphere Replication appliance, and apply the update through the
virtual appliance administration interface (VAMI) on port 5480. See Upgrade vSphere Replication by Using
the Downloadable ISO Image.
After upgrading the vSphere Replication appliance, you must configure it to synchronize with an external
NTP server. See “Configure NTP Synchronisation in Your Environment,” on page 12.
Configure NTP Synchronisation in Your Environment
You must synchronize the time on the vSphere Replication appliance in your environment with an NTP
server.
By default, the vSphere Replication appliance is synchronized with the ESXi host on which it resides. You
must disable the NTP synchronization with the host and configure the vSphere Replication appliance and
the vCenter Server to synchronize with an external NTP server.
Procedure
1 Configure NTP synchronization on the vSphere Replication appliance.
a In the vSphere inventory tree, locate the vSphere Replication appliance, right-click and select Edit
Settings.
b On the VM Options tab, click VMware Tools.
c Deselect the Synchronize guest time with host check box.
d In the virtual appliance console, run the command chkconfig ntp on to run NTP synchronization
every time the vSphere Replication appliance starts up.
e To configure the vSphere Replication appliance to synchronize with an NTP server, edit
the /etc/ntp.conf file to enter the address of an NTP server.
Add the following line in the ntp.conf file:
server <your_ntp_server_address>
f Run the service ntp start command.
2 Configure the vCenter Server on the source site to synchronize with the NTP server that you configured
in the vSphere Replication appliance.
How vSphere Replication Connects to Cloud
When you create a connection to the cloud, the vCloud Tunneling Agent in the vSphere Replication
appliance creates a tunnel to secure the transfer of replication data to your cloud Organization.
When a tunnel is created, the vCloud Tunneling Agent opens a port on the vSphere Replication appliance.
ESXi hosts connect to that port to send replication data to a cloud organization. The port is picked randomly
from a configurable range. The default port range is 10000-10010 TCP.
By default, ports 10000-10010 are not open on ESXi hosts. When you power on the vSphere Replication
appliance, a vSphere Installation Bundle (VIB) is installed on all supported ESXi hosts in the vCenter Server
inventory where the appliance is deployed. The VIB creates a firewall rule, Replication-to-Cloud Traffic, that
opens TCP ports 10000 to 10010 for outgoing traffic. The rule is enabled automatically and takes effect
immediately when you power on the vSphere Replication appliance, or when a host is registered or
vSphere Replication for Disaster Recovery to Cloud
12 VMware, Inc.