Preparing for Migration

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Before beginning to migrate any type of vCenter Server deployment to an appliance, you must complete the preparation tasks.

Preparation tasks:

Synchronizing Clocks on the vSphere Network
Preparing vCenter Server Databases for Migration
Prepare Managed ESXi Hosts for Migration
Download and Mount the vCenter Server Installer
Download and Run VMware Migration Assistant on the Source Windows Machine

What to read next

Synchronizing Clocks on the vSphere Network
Verify that all components on the vSphere network have their clocks synchronized. If the clocks on the physical machines in your vSphere network are not synchronized, SSL certificates and SAML Tokens, which are time-sensitive, might not be recognized as valid in communications between network machines.
Preparing vCenter Server Databases for Migration
The vCenter Server appliance instance requires a database to store and organize server data. Ensure your source vCenter Server database is prepared for migration to the target vCenter Server appliance.
Prepare Managed ESXi Hosts for Migration
You must prepare the ESXi hosts managed by your vCenter Server installation before migrating it from Windows to vCenter Server 7.0.
Preparing vCenter Server Certificates for Migration
You must verify that your source vCenter Server certificates are prepared before you start the migration process.
System Requirements for the vCenter Server Installer
You can run the vCenter Server GUI or CLI installer from a network client machine that is running on a Windows, Linux, or Mac operating system of a supported version.
Determine the Oracle Database Size and the Storage Size for the New Appliance
Before upgrading a vCenter Server appliance or migrating a vCenter Server on Windows that uses an external Oracle database, you must determine the size of the existing database. Based on the size of the existing database, you can calculate the minimum storage size for the new vCenter Server appliance database using an embedded PostgreSQL database.
Determine the Microsoft SQL Server Database Size and the Storage Size for the New vCenter Server Appliance
Before upgrading a vCenter Server appliance, or migrating a vCenter Server on Windows that uses an external Microsoft SQL Server database, you must determine the size of the existing database. Based on the size of the existing database, you can calculate the minimum storage size for the new vCenter Server appliance. This storage size allows the embedded PostgreSQL database to assume the data from the old database with enough free disk space after the upgrade.
Download and Run VMware Migration Assistant on the Source Windows Machine
You must download and run the VMware Migration Assistant on your source vCenter Server or Platform Services Controller to prepare it for migration from Windows to a vCenter Server appliance. If your deployment of vCenter Server has an external Update Manager that runs on Windows, download and run the VMware Migration Assistant on the source Windows machine.Update Manager prepares the Update Managerserver and database for migration from Windows to the vCenter Server appliance.

Parent topic: Migrating vCenter Server for Windows to vCenter Server Appliance

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