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#### **Installation**
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* Pre-requisites
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* Apache 2.1+
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* MySQL 5.1+
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* storage_engine = InnoDB
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* local_infile = ON (under [mysqld] section)
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* sql_mode = empty (or NO_ENGINE_SUBSTITUTION) for MySQL 5.6+
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* PHP 5.2+, 7.0+
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* php-imap
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* php-curl
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* php-xml
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* memory_limit (min. 256MB)
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* max_execution_time (min. 60 seconds)
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* error_reporting (E_ERROR & ~E_NOTICE & ~E_STRICT & ~E_DEPRECATED)
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* display_errors = OFF
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* short_open_tag = OFF
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* Hardware: 4 GB RAM, 250 GB Disk (for file attachments)
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* Procedure
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* Get your LAMP, WAMP, MAMP configured that meets the above pre-requisites.
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* Unzip Vtiger CRM into web-folder (or document root)
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* Make sure to provide writeable access to (Apache process owner) on web-folder.
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* Visit [http://yourserver.tld/index.php] (http://yourserver.tld/index.php)
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* The wizard will help you get through next steps of installation.
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#### **Migration**
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* PLEASE MAKE SURE TO TAKE BACKUP OF EXISTING SETUP - BOTH DATABASE AND SOURCE.
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* Steps
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* Ensure your server configuration meets the pre-requisites.
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* Unzip vtigercrm-6ab-7xy-patch.zip into Vtiger CRM Folder.
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* vtiger7.zip and migrate folder will be unpacked.
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* Through browser open /migrate path.
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* [http://yourserver.tld/vtigercrm/migrate] (http://yourserver.tld/vtigercrm/migrate)
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* Follow the instructions provided on the wizard.
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*Note On *nix? Enable write-permission for the apache process owner for smooth migration.*
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* Tips
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* Always download the latest migration patch pointed from our website.
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* Migration script execution is hungry on time and memory.Ensure your PHP configuration does not limit it.
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* Make sure you have configured error_reporting well. Wrong configuration can clog the log files.
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* Review - existing table Engine type to be in InnoDB - (expect sequential tables ending with _seq).
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#### **Backup**
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Routine backup (archives) of the database and application setup is essential to ensure failover is smooth.
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* Tip
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* mysqldump - administration tool is recommended to take dump of database.
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* zip - vtigercrm folder (specifically storage, user_privileges)
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