# Old Version Upgrade
Older version can be upgraded to the latest version through the SiteServer CLI.
The currently supported versions of the upgrade command include:
SiteServer CMS 3.6Versions (3.6, 3.6.1, 3.6.2, 3.6.3, 3.6.4) are upgraded to the latest versionSiteServer CMS 4.0Upgrade to the latest versionSiteServer CMS 4.1Upgrade to the latest versionSiteServer CMS 5.0Upgrade to the latest version
Upgrade to the latest version SiteServer CMS 4.1 version as an example to explain how to use the upgrade command.
TIP
Online upgrades are supported in versions of SiteServer CMS 6.0 and later, this document is only available for pre-6.0 versions.
# 1. Run the database backup command
The old version before upgrading need to use the database backup command siteserver backup to the old version of the database backup to folder, find the folder where the SiteServer CMS system:
Open Web.config and you can see the database information used by the current system:
<add key="DatabaseType" value="SqlServer" />
<add key="ConnectionString" value="Server=(local);Uid=sa;Pwd=123456;Database=cms_4.1;" />
Switch the command line to this folder and run the backup command to back up the database data to the backup folder:
siteserver backup -d backup
After the backup is complete, you can see the backup folder in the folder:
# 2. Run the system upgrade command
Next we need to use the upgrade command siteserver update to convert the old version of the data structure and data to the new version of the data structure and data.
The upgrade command will change the data structure stored in the backup file to the latest version of the data structure. After the upgrade is completed, a new folder update will be generated for restoring the command.
Switch the command line to the system root directory, run the upgrade command and specify the backup folder:
siteserver update -d backup
Note that the system upgrade command only converts the backup data file to a new data file, and the command does not operate on the database.
After the system upgrade command is executed, a folder named update will appear in the system root directory. This folder stores the data files after the upgrade:
# 3. Setting up a new version of the environment
With the backup and upgrade commands, we have prepared the data needed for the new version of the system, and then we need to prepare the runtime environment for the new version.
First, we download the latest version of the SiteServer CMS system and place the new system in a cms_new folder:
Then, we create an empty database for the new version (the new version of the database type can be inconsistent with the old version), here we have a new database called cms_new.
Next, we modify the Web.config file to store the database information:
<add key="DatabaseType" value="SqlServer" />
<add key="ConnectionString" value="Server=(local);Uid=sa;Pwd=123456;Database=cms_new;" />
Finally, we create a new IIS site, point to this folder, and add NETWORK SERVICE and IIS_IUSRS account permissions to the folder .
After completing the above steps, the environment of the new version of the system will be completed.
# 4. Recover data
We need to use the database restore command siteserver resore to restore the old version of the data to the new version.
Go to the old version folder and copy the update folder from the old version root directory to the new version root directory:
Switch the command line to the root of the new version of the system and run the restore command (note that the restore command requires the -d parameter to be restored from the update folder):
siteserver restore -d update
You can see that the command will check the data one by one and insert the data into the new version database.
Once the command is complete, you can open your browser to access the new system background:
As you can see, the old version of the data has been transferred to the new version.
Finally, copy the site files from the old version of the system folder to the new version of the system folder, switch the domain name, and complete the version upgrade.