Zend Server Installation Guide > Windows Installation and Upgrade > Upgrading Zend Server

Upgrading Zend Server on Windows

The procedures on this page describe the upgrade procedures for a single Zend Server and a Zend Server cluster on a Windows operating system.
Please read the following restrictions carefully before proceeding.

Upgrade Restrictions

Upgrading Zend Server can only be performed when upgrading from Zend Server 6.x and older to Zend Server 8.x, or when upgrading between Zend Server 8.x versions.

Direct upgrades from Zend Server 5.6 or older can only be performed using a clean installation of Zend Server 8.x. If a clean installation is not possible, you will need to complete a two-step upgrade procedure. For more information, please contact the Zend Support Center.

For a list of limitations and known upgrade issues, see the Zend Server Release Notes.

Note:

When upgrading from a PHP version lower than PHP 5.5, the Optimizer component will be replaced by the OPcache (Optimizer Plus Cache) component.

Using the Zend Repository Installer

The upgrade procedures use the Linux Zend Repository Installer program which includes a simple shell script that automates the process of upgrading Zend Server through Zend's DEB repository.

The script upgrades your Zend Server and PHP versions, according to your current configurations and target version passed. The script will notify you when an upgrade cannot be performed. This occurs in the following scenarios:

When attempting to upgrade from Zend Server 5.x and below
When attempting to downgrade a PHP version
When attempting to upgrade a Web server (e.g., from Apache to nginx)

Zend Server Versions/PHP Versions Support

This table specifies the PHP versions supported by the latest versions of Zend Server.

Zend Server 6.0	Zend Server 6.1	Zend Server 6.2	Zend Server 6.3	Zend Server 7.0	Zend Server 8.0*
PHP 5.3	PHP 5.3	PHP 5.3	PHP 5.3	-	-
PHP 5.4	PHP 5.4	PHP 5.4	PHP 5.4	PHP 5.4	-
			PHP 5.5	PHP 5.5	PHP 5.5
					PHP 5.6

* Current version

Upgrading a Zend Server Cluster

This procedure explains how to upgrade a Zend Server cluster using the Zend Repository Installer program.

Example scenarios:

Upgrading a Zend Server cluster to a cluster with the same major PHP version (Example: Zend Server 7.0.0 with PHP 5.5 to Zend Server 8.0.0 with PHP 5.5).
Upgrading a Zend Server cluster to a cluster with a different major PHP version (Example: Zend Server 6.3.0 with PHP 5.4 to Zend Server 8.0.0 with PHP 5.5 OR Zend Server 7.0.0 with PHP 5.5 to Zend Server 8.0.0 with PHP 5.6).

Important!

When changing a major PHP version, some PHP and Zend Server configuration settings may be lost. For post-upgrade reference, we recommend making a backup of the 'etc' folder located in the Zend Server installation files (/usr/local/zend/etc-x.x.x).

Important!

This procedure does not require disabling the servers in the cluster before upgrading. Servers which are disabled during the upgrade process may fail to run properly when re-enabled.

Instructions on how to complete a procedure

To upgrade a Zend Server cluster, perform the following procedure for each server in the cluster:

Remove the server from the Load Balancer. This should be done following the recommended procedure depending on your load balancing configuration.
Upgrade the server:
1. Download the Zend Server 8.x package for Windows from http://www.zend.com/en/products/server/downloads
2. After downloading the package, locate the downloaded .exe file and double-click it to start the upgrade process.
3. Follow the instructions presented by the Installer. Pay attention to the important information presented during the upgrade process.

Return the server to the Load Balancer.

	Read Also
	Installing Zend Server
	Upgrading Zend Server

Upgrading Zend Server on Windows

Upgrade Restrictions

Using the Zend Repository Installer

Zend Server Versions/PHP Versions Support

Example Scenarios:

Example scenarios: