Vmware - Backing up VMware vSphere 5.x and 6.0 products (2119754)

Here they are tons of links, from official Vmware KB base, that explain how to backup Vmware ESX(i) configuration and proceed with relative restore:

Backing up VMware vSphere 5.x and 6.0 products (2119754)

Backing up and restoring ESXi configuration using the vSphere Command-Line Interface and vSphere PowerCLI (2042141)

Purpose

This article contains links to relevant information for backing up VMware vSphere 5.x and 6.0 products.

Resolution

ESXi:

• Backing up and restoring ESXi configuration using the vSphere Command-Line Interface and vSphere PowerCLI (2042141)
• Locally restoring an ESXi configuration from state.tgz backup (2043048)

vCenter Server:

• Backing up and restoring the vCenter Single Sign-On (SSO) 5.1 configuration (2034928)
• Backing up and restoring vCenter Server 4.x and 5.0 (1023985)
• Generating a backup of the vCenter Server database for analysis (1032662)
• How to back up and restore vCenter Server 6.0 external deployment models (2110294)
• Backing up and restoring the vCenter Server 6.0 embedded vPostgres database (2091961)
• Backing up and restoring the vCenter Server Appliance vPostgres database (2034505)

VMware Inventory Service:

• Backing up and restoring the vCenter Server Appliance Inventory Service database (2062682)

VMware Single Sign-On:

• Backing up and restoring the vCenter Single Sign-On (SSO) 5.1 configuration (2034928)
• Backing up the vCenter Server database running on Microsoft SQL or SQL Express server (2012138)
• Backing up and restoring the VMware vCenter Single Sign-On 5.5 configuration (2057353)

See Also

Performing an end-to-end backup and restore for VMware View Manager (1008046)
Backing up and restoring vCenter Server 4.x and 5.0 (1023985)
Generating a backup of the vCenter Server database for analysis (1032662)
Backing up the vCenter Server database running on Microsoft SQL or SQL Express server (2012138)
Backing up and restoring the vCenter Server Appliance vPostgres database (2034505)
Backing up and restoring the vCenter Single Sign-On (SSO) 5.1 configuration (2034928)
Backing up and restoring ESXi configuration using the vSphere Command-Line Interface and vSphere PowerCLI (2042141)
Locally restoring an ESXi configuration from state.tgz backup (2043048)
Backing up and restoring the VMware vCenter Single Sign-On 5.5 configuration (2057353)
Backing up and restoring the vCenter Server Appliance Inventory Service database (2062682)
Backing up and restoring the vCenter Server 6.0 embedded vPostgres database (2091961)
How to back up and restore vCenter Server 6.0 external deployment models (2110294)
VMware vSphere 5.x / 6.0 製品のバックアップ (2125007)
备份 VMware vSphere 5.x 和 vSphere 6.0 产品 (2134951)