Configuring DR

Use the XenCenter Configure DR dialog box to identify storage repositories (SRs) where the metadata for a pool - configuration information about all the VMs and vApps in the pool - will be stored. This metadata will be updated whenever you make changes to VM or vApp configuration within the pool. To configure DR on the primary pool: On your primary site, select the pool that you want to protect and on the Pool menu, point to Disaster Recovery and then click Configure.

HA Requirements

Minimum 3 XS hosts Shared Storage Resource Pool Static IP address for all Xenserver hosts Advanced edition or higher VMs connected to pool-wide networks VMs not connected to any XS host DVD drive configuration All VM virtual disks on shared storage accessible pool-wide 4 MB heartbeat volume 256 MB metadata volume -stores pool master metadata use bonded management interface VM Restart Priority: HA restart priority -Restart -Restart if possible -Do not restart

VM Restart Settings

If more servers fail than have been planned for, then an HA recovery operation begins. The HA restart priority is used to determine which VMs are restarted, while the order in which individual VMs are started is determined by their start order and delay interval values, ensuring that the most important VMs are restarted first. HA restart priority The HA restart priority specifies which VMs will be restarted under the HA failure plan for a pool:

XenServer CLI Overview

Automatically installed on all XS hosts Included with XenCenter Available as standalone remote CLI-Linux Available for install on windows SSL Connectivity Runs against pool master server Runs against any host member by using host id. Monitoring XenServer Alerts visible from XenCenter GUI Can be emailed to resource pool admin Can support custom fields and tags Can support custom searches Use XENTOP tool to monitor XS in real time Events and Alerts

XenServer HA

XenServer High Availability (HA) allows virtual machines to automatically be restarted in the event of an underlying hardware failure or loss of any managed server. HA is about making sure that important VMs are always running in a resource pool. With HA enabled, if one of your servers fails, its VMs will be intelligently restarted on other servers in the same pool, allowing essential services to be restored in the event of system or component failure with minimal service interruption.

Configure iSCSI with FreeNAS

Before configuring the below steps, make sure you add some additional hard disk(I mean space) to your freenas machine. Open a browser and login to FreeNAS 8.2. Navigate to Storage > Active Volumes: Click Volume Manager. Enter a Volume Name, select disk(s), select Filesystem type (ZFS has some neat features), then click Add Volume: Click the Create ZFS Volume button: Enter a ZFS Volume Name, specify the volume size, then click Add ZFS Volume: Navigate to Services > Core, and turn on iSCSI:

WorkLoad Balancing

Workload Balancing is a XenServer appliance that balances your pool by relocating virtual machines onto the best possible servers for their workload in a resource pool. For example, Workload Balancing can: Balance virtual-machine workloads across hosts in a XenServer resource pool Determine the best host on which to start a virtual machine Determine the best host on which to power on a virtual machine that you powered off Determine the best host for each of the host’s virtual machines when you put that host into Maintenance mode Note: Workload Balancing is available in Citrix XenServer Enterprise Edition or higher.

Access DataBase Moving/Restoring

Access Data Store While there is no built-in backup scheduler with Access, Presentation Server includes the DSMAINT BACKUP command for backing up Access Data Stores only. Citrix recommends that this command be executed daily using a scheduler script. WARNING! Do not attempt to backup Microsoft SQL Server or Oracle databases using this command. MDB: A file with the MDB file extension is a Microsoft Access Database file. Moving / Restoring an Access Database

Access Gateway

Citrix Access Gateway is a secure application access solution that provides administrators granular application-level policy and action controls to secure access to applications and data while allowing users to work from anywhere. It gives IT administrators a single point of control and tools to help ensure compliance with regulations and the highest levels of information security across and outside the enterprise. At the same time, it empowers users with a single point of access—optimized for roles, devices, and networks—to the enterprise applications and data they need.

Adding Second Farm to web Interface

This below process is for Presentation Server 4.5 Open the first farm and: Open the Access Management Console at Web Interface Server, click “Configuration Tool” -> “Web Interface” –> right click on the site you created and select “Manage Server Farm” -> Add second Farm In Citrix Xenapp 5.0, Open AMC and select the website you have created, right click and select Manage Server Farm–> Add second farm.