1 Creating a high-availability, scalable web-server system within the Digiweb cloud.
2 Table of Contents Abstract. Page 3 Introduction to Cloud computing Page 3 Business benefits of Cloud computing Page 4 A highly scalable environment Page 5 Implementing shared storage Page 6 Installing & configuring the database server.. Page 7 Installing & configuring the web server. Page 7 Load balancing the environment... Page 9 Planning for scalability. Page 9 Digiweb & Cloud computing. Page 11 Glossary. Page 12 2 P a g e
3 Abstract Cloud computing is all the rage. "It's become the phrase du jour," says Gartner senior analyst Ben Pring, echoing many of his peers. The problem is that (as with Web 2.0) everyone seems to have a different definition. The key thing to note however is that when used effectively Cloud computing can provide an entirely new way of using IT resources in the most efficient and practical way possible. Cloud computing really comes into focus when you think about what IT always needs: a way to increase capacity or add capabilities as and when required without investing in new infrastructure, training new staff, or licensing new software. Cloud computing encompasses any subscription-based or pay-per-use service that, in real time over the Internet, extends IT's existing capabilities. Cloud computing, therefore, brings a more cost-effective, faster and less risky alternative to traditional onpremises development, changing forever the economics of business computing. In this white paper we will look at the practical configuration of a highly available and scalable Wordpress-based web application. A web application generally has a number of discrete tasks and activities. Most common amongst these are storage (of code, databases & static content), serving of databases, generation and serving dynamic content and serving static content. Whilst all of these activities can be carried out on the same server, specialising these functions onto several dedicated machines can provide far greater scalability and in many cases, a highly available environment. Please note the technical glossary at the end of this document is used to define many common terms for the avoidance of ambiguity. Introduction to cloud computing According to leading research company Gartner, Cloud computing heralds an evolution of business that is no less influential than e-business. Gartner maintains that the very confusion and contradiction that surrounds the term "cloud computing" signifies its potential to change the status quo in the IT market. As its name suggests, this kind of platform lets developers write applications that run in the cloud, or use services provided from the cloud, or both. Put simply, Cloud computing is a computing paradigm in which tasks are assigned to a combination of connections, software and services accessed over a network. This network of servers and connections is collectively known as the cloud. Users can access resources as they need them. For this reason, cloud computing has also been described as on-demand computing. Cloud computing, therefore is a highly scalable and flexible service that can be delivered and consumed over the internet through an as-needed, pay-per-use business model. Traditionally, if you wanted to run IT applications you needed to buy servers and software, place them in your office and hire IT staff to manage them. Cloud applications are a new way of using applications with none of the overheads of traditional applications. 3 P a g e
4 Business Benefits of Cloud Computing Cloud computing offers many business benefits; the two major benefits being cost and flexibility. A Cloud-based Infrastructure can be up and running within 10 minutes, which is unheard of with traditional physical servers. They cost less, because you don t need to need to pay the people, products, and facilities to run them. Additionally they are more scalable, more secure, and more reliable than most applications. Plus, upgrades are taken care of for you, so your applications get security and performance enhancements and new features automatically. Cloud computing therefore is an attractive option for business offering: - Immediate access to computing hardware, with no up-front fee - Lower IT costs by only investing in the applications and services needed - Develop, deploy and run applications that can easily grow capacity - Flexibility in working A Highly Scalable Environment A web application generally has a number of discrete tasks and activities. Most common among these are the following activities: - Storage of (code, databases & static content) - Serving of databases - Generation and serving dynamic content - Serving static content While all of these activities can be carried out on the same server, specialising these functions onto several dedicated machines can provide far greater scalability and in many cases, a high availability environment. For the purpose of this paper we will focus on the generation of dynamic content and serving of static content, done on the same layer. This is generally going to be the case with a LAMP stack 1, but in other cases, using a highly efficient web server such as thttpd may be required. Database and storage each have their own layer. Our objective here is to scale the servicing of end-user in addition to being able to have the minimal resources available for off-peak times. 1 If the generated content is coming from something like Jboss or Tomcat, splitting those up would again allow for more scalability for those functions, and isolation of scalability to individual functions. 4 P a g e
5 A Sample Highly Scalable Environment Sample environment with multiple load-balanced webservers, with discrete database and file servers 5 P a g e
6 Implementing Shared Storage To implement storage, NFS was chosen. Due to the built-in High Availability (HA) features of our cloud environment, it was not necessary to create an HA-enabled NFS cluster with DRBD, but this can be added as an additional level of availability if required. Initially, a suitably sized server instance was instantiated, with a separate large storage volume. One of the pre-existing CentOS Linux templates was used. With this cloud environment, new templates can be created by booting a server from a supplied ISO file, configured and then saved. Once the server was built and running, NFS services were installed. Following this the SELINUX settings were adjusted and local (iptables) firewalls amended accordingly to serve the content. LVM2 was used to create a storage group called exports from the storage volume: - pvcreate /dev/xvdb - vgcreate exports /dev/xvdb In this storage group, 50% of the space was allocated to a logical volume called web 2 - lvcreate name web -L 10GB exports and an ext3 file system was created on that volume. - mkfs -t ext3 /dev/storage/web An appropriate entry was created in /etc/fstab, creating the mount point. The new partition was then mounted. - echo '/dev/exports/web /exports/web ext3 defaults 0 0' >> /etc/fstab - mkdir -p /exports/web - mount /exports/web An entry was placed in the /etc/exports file which allows all servers within the local subnet to mount the shared web file space. TheNFS service was then started and the directories exported: - echo '/exports/web /24(rw,no_root_squash,sync)' >> /etc/exports && service nfs start && exportfs -r The NFS service is now ready to begin serving files to any local web servers. Please note the IP address assigned to this VM for future use when mounting the NFS shares. The private IP can be seen through the control panel, or by using interface configuration from a shell on the instance. 2 Using LVM and not allocating all space allows for scaling up of the in-use storage areas, and creating new ones later on if they become necessary or desirable. 6 P a g e
7 Installing & configuring the Database server For the database server, the same initial template as the NFS server was used, with a smaller data volume size. Similarly, the built-in HA feature was used but a MySQL replicating pair could also be used. Once the initial instance was running, a volume group called storage was created following the same procedure used for the exports volume group on the NFS server. A similarly-sized logical volume called mysqldata was also created. - pvcreate /dev/xvdb - vgcreate storage /dev/xvdb - lvcreate name mysqldata -L 5GB storage - mkfs -t ext3 /dev/storage/mysqldata Once this step was done, the mount point is created. Knowing that the default install of mysql for this Linux distribution is /var/lib/mysql, a directory is created, fstab updated, and mounted. - mkdir -p /var/lib/mysql - echo '/dev/storage/mysqldata /var/lib/mysql ext3 defaults 0 0' >> /etc/fstab - mount /var/lib/mysql At this point, mysql-server was installed. - yum install mysql-server The steps above in creating the /var/lib/mysql mount caused the data that contains the actual mysql databases to be put on the mounted file system (which is resizable on the fly) rather than on the root file system. Installing & configuring the Web server The web server is now installed and configured. The shared NFS file store does not just contain the web code and static content - it also contains the Apache server configuration files. Similarly, the shared storage can contain configuration for items such as PHP if necessary, but in this example, it is not implemented. The web-server instances do not need a separate storage disk, as almost everything they do comes from either the shared file system, or the database server. Therefore, the shared file system must be mounted, with the webroot and Apache configuration files symbolically linked to the correct directories. Step 1: Create a new instance, again using the same CentOS template: - Install apache and php (if making a LAMP setup.) - yum install apache php Once Apache is installed, it must be immediately shut it down. - service httpd stop 7 P a g e
8 Now that Apache is no longer running, the shared storage must be mounted - mkdir /mnt/web - echo ' x:/exports/web /mnt/web nfs tcp,wsize=1024,rsize=4096,rw 0 0' >> /etc/fstab - mount /mnt/web This makes the shared filesystem available, and cause it to re-mount when the server restarted. Check with - df -h Step 2: create the directories for the webroot and the web configuration: - cd /mnt - mkdir webroot - mkdir webconf Step 3: put the webroot onto the shared storage: - cd /var/www - tar -c./* tar -xv -C /mnt/web/webroot/ Step 4: check to make sure that the files copied: - ls -lhr /mnt/web/webroot/ - ls -lhr /var/www/ You should see nearly identical directory listings (the /mnt/web/webroot/ listing should contain a lost+found directory that should not be in the /var/www/ listing). Step 5: remove the old webroot, and symlink the new one into place: - cd /var - rm -fr./www - ln -sf /mnt/www/webroot./www Step 6: repeat the above process for the apache configuration directory: - cd /etc/apache2 - tar -c./* tar -xv -C /mnt/web/webconf/ - cd /etc - rm -fr./apache2 - ln -sf /mnt/web/webconf./apache2 In Centos by default SELINUX does not allow Apache to serve content off of symbolic links. Therefore the SELINUX policies need to be adjusted. Check your distribution for more details. 8 P a g e
9 Now that both the webroot and the Apache configuration directories exist on the shared storage (with symbolic links, so that they can be seen in their default locations.) Apache can be restarted. - service httpd start Load Balancing the Environment There is now a running web-server, but it is not visible to the outside world. To enable this function follow the steps below: Go to the Network section of the cloud control panel. Obtain a public IP address, and create a load balancing policy that forwards port 80 to port 80, and add the web-server to the load balancing pool. Most applications really need to have IP-based load balancing turned on, to ensure that a user hits the same back-end server - this helps maintain session information. You should now be able to access content being served by Apache via the public IP address you associated with the load-balancing policy. Now you can install whatever applications you want to install under Apache. In this example, Wordpress was subsequently installed. Once the application is configured and tested to your satisfaction, the web server can be stopped and a template from the root disk created. Be sure that your testing includes some reboot tests where you shut down, then restart the instance and ensure that all services necessary to serve content come back up automatically. It is recommended that the NFS and MYSQL instances are tested in a similar way. Now that a template has been created from the web-server, you can start the web-server back up. Once this is fully started you should once again be able to see web content via the public IP associated with the load-balancing policy. Planning for Scalability As traffic grows, users may find that the site has become slow, or see that the load is too high on the web-server instance. As the web server has been templated, and the system allocates IP's and such dynamically as you create new instances, you can simply create a new instance (or however many are necessary) to serve your traffic from that template. Each new instance will get a new IP address in the private network. Once those instances are running, you can add those instances to the load balancing pool, and they will all serve content to end users, thus sharing the load for serving the content between all web servers. This also increases overall capacity for the site. This allows a system to scale up and down in response to load. For example, during peak times of 12-3pm, a site may need five web server instances while after 11pm in the evening, it may only need one. With this cloud platform, it is possible to run servers only when needed and pay only for the hours used. 9 P a g e
10 NB: When you light up your 2 nd, 3 rd or 10 th web-server instance, you didn't have to do ANY configuration for them to start serving content, other than to add their newly-assigned IP's to the load balancing pool. Being able to template things, and create & turn them on when you need them, is part of the magic that cloud computing can provide. NB: After initially creating the first instance in the system, and setting it's root password to something other than the default, I created and applied a port-forwarding service, and used SSH to get to the server instead of using the remote-console through the system. Access is much faster, and things like cut & paste work the same as you would be used to.. and you can SSH from this instance to the others in the system, so that you only need the one port-forwarding service to be able to administer all the servers you create within this system. 10 P a g e
11 Digiweb & Cloud Computing Within today s economic environment, companies must use IT resources in a manner that provides optimum return on investment (ROI). Digiweb s Cloud computing solutions offer business an entirely new way of using IT resources in the most efficient and practical way possible. Our service delivery model, uses various available cloud computing models, to deliver your IT services in the most cost-effective way that also meets your specific needs for security, performance, regulatory compliance, and strategic objectives. We feel that a true cloud computing platform must have the following elements: Hardware management is abstracted from the user. No upfront costs, all charges are for usage only. Service must be scalable up and down, without contractual obligation use only what you need. Must be instantly self-provisioning, via web interface or API calls. Utility Cloud computing The future of computing is cloud power your IT needs with Digiweb s utility computing cloud. This approach gives company s immediate access to computing hardware, with no up-front fee whilst also allowing companies to only pay for the solutions they need, therefore significantly lowering IT costs. This solution also allows organisations to easily scale their IT in line with company growth with no penalty How is this achieved? - Pick your server specification (RAM, CPU) - Pick the size of high-performance SAN storage - Pick the operating system and applications - Provision and your server is ready instantly Business & IT benefits - Provision new servers, destroy old servers in seconds - Scale CPU, RAM up or down in seconds - Schedule snapshots or restore in seconds - All servers enjoy high availability, failing over instantly and automatically to other servers in the event of server failure - With built in load balancing, use cloud servers to scale our horizontally automatically Private Cloud Computing If you need the power of a hosted cloud environment, but do not wish to use our shared utility cloud environment, you may want a wholly private cloud. With a Digiweb s private cloud, you gain all the benefits offered by Infrastructure-as-a-Service cloud computing without working in a multi-client environment. Digiweb manage the entire physical environment, servers and storage all the client needs to do is deploy their virtual server assets as needed. These environments are also 100% customisable so if a client needs a particular environment deployed we can provide it. With the Digiweb Cloud, our two priorities are security and availability. For cloud computing to be truly usable, there cannot be any doubt about the confidentiality, availability and integrity of the service. Our data centre facilities are secured and regularly audited. All data centre s are protected with uniformed security and manned 24/7, with round-the-clock monitoring and patrolling by more security agents. 11 P a g e
12 Technical Glossary System: A group of instances working together to perform an overall function. (In this context systems are used to serve web content to end-users. Instance: An instance is for all intents and purposes, a server. In this case, it is a virtual server with fixed resource allocations. Volume: This is a virtualised storage repository that can be created separately and associated with a particular instance. Each instance has at least one root volume associated with it to contain the operating system. Generally an instance will ALSO have a storage volume associated with it, although you can attach and detach volumes at will to a running instance. (although.. depending on how you have your VM organised for an instance.. detaching a storage volume might cause problems.) The storage volumes used in the cloud are served via iscsi, but this is entirely abstracted from the end-users, and the virtual machine instances, so that you will see the iscsibased storage as if it were local drives on the server instance. Public IP: A public IP is an IP address that can route traffic to and from the public Internet. A public IP is not necessary for most functions within the cloud. Generally for a given system of instances, single public IP address is sufficient, as inter-server traffic happens in a private network that ties the instances together. Private IP: An IP address that resides within the private network that ties the instances of a system together. Port Forwarding Service: A port-forwarding service allows you to associate specific ports on a public IP in a 1:1 relationship with specific ports on an instance's private IP. Generally only management of servers should need be done this way, as services for end-users are best served via load-balancer rules. (see below.) Several port associations can be added to a port-forwarding service. When this multi-port service is associated to a particular instance, all the ports are forwarded to the same one. The port associated on the public IP does not have to match the port used on the private IP, which can be used to add non-standard ports such as a non-privileged port mapping through to port 22 for SSH or a random port mapping to port 3389 for RDP if this is desired, without having to modify the service configuration to change the listening port. Load Balancer Rule: A load-balancer rule lets you establish a 1:n relationship of inbound ports on a public IP address with ports on the private IP addresses of content servers, such as web-servers. Load-balancing can be done either round robin where it cycles requests through each server, or IP based (often known as sticky ) where an individual user should see the same content server each time they access a site/service. Again, the port on the public IP address does not have to match the port used on the content server, which can be useful for serving content via port 80 from tomcat servers and other applications which default to using port 8080, for example. (This keeps end-users from having to add :8080 to the URL's they are typing into their browsers.) HA: In this instance, HA (High Availability) refers to the cloud system's ability to tell if a node goes down, and instantly start new copies of any instances running on that node on another node. This minimises downtime.. as if the NFS or MYSQL server in this example fail, the system will turn on another copy of the instance which will start serving content once it is back up. Template: A template is a pre-saved image of a server. Typically contains operating system and applications. 12 P a g e
13 For more information, contact Digiweb College Business & Technology Park, Blanchardstown, Dublin 15, Ireland Tel: +353 (0) Fax: +353 (0) Web: P a g e
Parallels Cloud Server White Paper Key Features and Benefits www.parallels.com Table of Contents Introduction... 3 Key Features... 3 Distributed Cloud Storage (Containers and Hypervisors)... 3 Rebootless
Deploying a Virtual Machine (Instance) using a Template via CloudStack UI in v4.5.x (procedure valid until Oct 2015) Access CloudStack web interface via: Internal access links: http://cloudstack.doc.ic.ac.uk
Syncplicity On-Premise Storage Connector Implementation Guide Abstract This document explains how to install and configure the Syncplicity On-Premise Storage Connector. In addition, it also describes how
Cloud.com CloudStack Community Edition 2.1 Beta Installation Guide July 2010 1 Specifications are subject to change without notice. The Cloud.com logo, Cloud.com, Hypervisor Attached Storage, HAS, Hypervisor
PARALLELS SERVER BARE METAL 5.0 README 1999-2011 Parallels Holdings, Ltd. and its affiliates. All rights reserved. This document provides the first-priority information on the Parallels Server Bare Metal
InterWorx Clustering Guide by InterWorx LLC Contents 1 What Is Clustering? 3 1.1 What Does Clustering Do? What Doesn t It Do?............................ 3 1.2 Why Cluster?...............................................
Volume 2, No. 02, April 2013 ISSN 2278-1080 The International Journal of Computer Science & Applications (TIJCSA) RESEARCH PAPER Available Online at http://www.journalofcomputerscience.com/ Implementation
Deployment Guide How to prepare your environment for an OnApp Cloud deployment. Document version 1.07 Document release date 28 th November 2011 document revisions 1 Contents 1. Overview... 3 2. Network
Selling Virtual Private Servers A guide to positioning and selling VPS to your customers with Heart Internet Contents Page Introduction 3 What are VPS? 3 Who are VPS customers? 6 VPS key selling points
Version 2.0 January 2012 AT&T CLOUD SERVICES AT&T Synaptic Compute as a Service SM : How to Get Started 2012 AT&T Intellectual Property. All rights reserved. Notice Copyright AT&T Intellectual Property.
BROCHURE PRIVATE COMPUTE-AS-A-SERVICE Private Compute-as-a-Service Today, organisations of all sizes are facing challenges unlike any they ve experienced before. Globalisation and economic pressures are
CloudPlatform (powered by Apache CloudStack) Version 22.214.171.124 Administrator's Guide Revised November 11, 2014 03:00 PM IST Citrix CloudPlatform CloudPlatform (powered by Apache CloudStack) Version 126.96.36.199
WINDOWS AZURE EXECUTION MODELS Windows Azure provides three different execution models for running applications: Virtual Machines, Web Sites, and Cloud Services. Each one provides a different set of services,
Tips for getting started with Virtual Data Center Last Updated: 1 July 2014 Table of Contents Safe Swiss Cloud Self Service Control Panel 2 Please note the following about for demo accounts: 2 Add an Instance
Highly Available NFS Storage with DRBD and Pacemaker SUSE Linux Enterprise High Availability Extension 12 Florian Haas, Tanja Roth, and Thomas Schraitle This document describes how to set up highly available
BASICS OF SCALING: LOAD BALANCERS Lately, I ve been doing a lot of work on systems that require a high degree of scalability to handle large traffic spikes. This has led to a lot of questions from friends
Red Hat Global File System for scale-out web services by Subbu Krishnamurthy (Based on the projects by ATIX, Munich, Germany) Red Hat leads the way in delivering open source storage management for Linux
How to Create a Simple Content Management Solution with Joomla! in a vcloud Environment A VMware Cloud Evaluation Reference Document Contents About Cloud Computing Cloud computing is an approach to computing
Amazon Web Services Primer William Strickland COP 6938 Fall 2012 University of Central Florida AWS Overview Amazon Web Services (AWS) is a collection of varying remote computing provided by Amazon.com.
Product Overview and Functional Specification Virtual Private Clouds Value Added Reseller (VAR) / Managed Service Provider (MSP) 1 P a g e Cloud Introduction and Glossary of Cloud Terms Cloud computing
Parallels Cloud Server 6.0 Parallels Cloud Storage Administrator's Guide October 17, 2013 Copyright 1999-2013 Parallels IP Holdings GmbH and its affiliates. All rights reserved. Parallels IP Holdings GmbH
Virtual Appliance Setup Guide 2015 Bomgar Corporation. All rights reserved worldwide. BOMGAR and the BOMGAR logo are trademarks of Bomgar Corporation; other trademarks shown are the property of their respective
An Oracle White Paper July 2012 Oracle VM 3: Building a Demo Environment using Oracle VM VirtualBox Introduction... 1 Overview... 2 The Concept... 2 The Process Flow... 3 What You Need to Get Started...
Vol.8, No.1 (2015), pp.109-120 http://dx.doi.org/10.14257/ijgdc.2015.8.1.11 A High Availability Clusters Model Combined with Load Balancing and Shared Storage Technologies for Web Servers A. B. M. Moniruzzaman,
Amazon EC2 Product Details Page 1 of 5 Amazon EC2 Functionality Amazon EC2 presents a true virtual computing environment, allowing you to use web service interfaces to launch instances with a variety of
Migrating LAMP stack from x86 to Power using the Server Consolidation Tool Naveen N. Rao Lucio J.H. Correia IBM Linux Technology Center November 2014 Version 3.0 1 of 24 Table of Contents 1.Introduction...3
Fermilab Central Web Service Site Owner User Manual DocDB: CS-doc-5372 1 Table of Contents DocDB: CS-doc-5372... 1 1. Role Definitions... 3 2. Site Owner Responsibilities... 3 3. Tier1 websites and Tier2
Most companies have their heads in the clouds and rarely have their feet on the ground. Their aspirations and dreams propel them to invest valuable time and money setting up infrastructure. However, more
MYASIA CLOUD SERVER Defining next generation of global storage grid User Guide AUG 2010, version 1.1 Table of Content 1. Introduction.. 3 2. Getting Started... 4 3. Introduction to Cloud Server Management
Service Catalogue virtual services, real results September 2015 Table of Contents About the Catalyst Cloud...1 Get in contact with us... 2 Services... 2 Infrastructure services 2 Platform services 7 Management
CLOUD INFRASTRUCTURE VIRTUAL SERVER (SHARED) USER GUIDE WELCOME TO THE VIRTUAL SERVER (SHARED) USER GUIDE AUSTRALIAN ACCOUNT HOLDERS For sales, account set-up enquiries and technical support, contact your
How to Use a LAMP Stack on vcloud for Optimal PHP Application Performance A VMware Cloud Evaluation Reference Document Contents About Cloud Computing Cloud computing is an approach to computing that pools
User Guide CTERA Portal Datacenter Edition September 2011 Version 3.0 Copyright 2009-2011 CTERA Networks Ltd. All rights reserved. No part of this document may be reproduced in any form or by any means
Windows Template Creation Guide How to build your own Windows VM templates for deployment in Cloudturk. TABLE OF CONTENTS 1. Preparing the Server... 2 2. Installing Windows... 3 3. Creating a Template...
How to Create an Enterprise Content Management Solution Based on Alfresco in a vcloud Environment A VMware Cloud Evaluation Reference Document Contents About Cloud Computing Cloud computing is an approach
Taking Drupal development to the Cloud Karel Bemelmans About me Working with Internet based services since 1996 Working with Drupal since 2011 Currently the devops guy @ Nascom Case Study: Nascom Genk,
Cloud Homework instructions for AWS default instance (Red Hat based) Automatic updates: Setting up automatic updates: by Manuel Corona $ sudo nano /etc/yum/yum-updatesd.conf Look for the line that says
ServerPronto Cloud User Guide Virtual machines Virtual machines are based on templates and are deployed on hypervisors. Hypervisors give them access to CPU, disk and network resources. The ServerPronto
How to Backup XenServer VM with VirtualIQ 1. Using Live Backup of VM option: Live Backup: This option can be used, if user does not want to power off the VM during the backup operation. This approach takes
Setting up your virtual infrastructure using FIWARE Lab Cloud Fernando López Telefónica I+D Cloud Architects, FIWARE firstname.lastname@example.org, @flopezaguilar (Slides: http://tinyurl.com/fiwarelab-cloud)
Junos Space Virtual Appliance Deployment and Configuration Guide Release 14.1R2 Modified: 2015-08-14 Revision 2 Juniper Networks, Inc. 1133 Innovation Way Sunnyvale, California 94089 USA 408-745-2000 www.juniper.net
Parallels Cloud Server 6.0 Parallels Cloud Storage Administrator's Guide March 06, 2015 Copyright 1999-2015 Parallels IP Holdings GmbH and its affiliates. All rights reserved. Parallels IP Holdings GmbH
19.10.11 Amazon Elastic Beanstalk A Short History of AWS Amazon started as an ECommerce startup Original architecture was restructured to be more scalable and easier to maintain Competitive pressure for
RingStor User Manual Version 2.1 Last Update on September 17th, 2015 RingStor, Inc. 197 Route 18 South, Ste 3000 East Brunswick, NJ 08816 Page 1 Table of Contents 1 Overview... 5 1.1 RingStor Data Protection...
Preparation Guide v3.0 BETA How to prepare your environment for an OnApp Cloud v3.0 (beta) deployment. Document version 1.0 Document release date 25 th September 2012 document revisions 1 Contents 1. Overview...
TGL VMware Presentation Guangzhou Macau Hong Kong Shanghai Beijing The Path To IT As A Service Existing Apps Future Apps Private Cloud Lots of Hardware and Plumbing Today IT TODAY Internal Cloud Federation
Alinto Mail Server Pro Installation Guide Alinto Version 2.0.1 Index 1. Introduction....................................................................................... 1 2. Prerequisites......................................................................................
CloudCamp Campus Party July 2011, Valencia Open Source Cloud Computing Management with OpenNebula Javier Fontán Muiños dsa-research.org Distributed Systems Architecture Research Group Universidad Complutense
TECHNICAL WHITE PAPER Ubuntu OpenStack on VMware vsphere: A reference architecture for deploying OpenStack while limiting changes to existing infrastructure A collaboration between Canonical and VMware
ENTERPRISE MONITORING & LIFECYCLE MANAGEMENT Unify IT Operations Enterprise IT is complex. Today, IT infrastructure spans the physical, the virtual and applications, and crosses public, private and hybrid
TECHNICAL WHITE PAPER Deployment Guide: Unidesk and Hyper- V This document provides a high level overview of Unidesk 3.x and Remote Desktop Services. It covers how Unidesk works, an architectural overview
Dell High Availability Solutions Guide for Microsoft Hyper-V www.dell.com support.dell.com Notes and Cautions NOTE: A NOTE indicates important information that helps you make better use of your computer.
Cloud Security with Stackato 1 Survey after survey identifies security as the primary concern potential users have with respect to cloud computing. Use of an external computing environment raises issues
SaaS A Product Perspective Software-as-a-Service (SaaS) is quickly gaining credibility and market share against traditional packaged software. This presents new opportunities for product groups and also
Software Define Storage (SDs) and its application to an Openstack Software Defined Infrastructure (SDi) implementation This paper discusses how data centers, offering a cloud computing service, can deal
Parallels Cloud Server 6.0 Parallels Cloud Storage Administrator's Guide August 18, 2015 Copyright 1999-2015 Parallels IP Holdings GmbH and its affiliates. All rights reserved. Parallels IP Holdings GmbH
Parallels Virtuozzo Containers 4.7 for Linux Deploying Clusters in Parallels-Based Systems Copyright 1999-2011 Parallels Holdings, Ltd. and its affiliates. All rights reserved. Parallels Holdings, Ltd.
Cloud Sure - Virtual Machines Maximize your IT network The use of Virtualization is an area where Cloud Computing really does come into its own and arguably one of the most exciting directions in the IT
Identikey Server Performance and Deployment Guide 3.1 Disclaimer of Warranties and Limitations of Liabilities Disclaimer of Warranties and Limitations of Liabilities The Product is provided on an 'as is'
Desktop virtualization using SaaS Architecture Pranit U. Patil, Pranav S. Ambavkar, Dr.B.B.Meshram, Prof. Varshapriya VJTI, Matunga, Mumbai, India. email@example.com Abstract - Desktop virtualization
How to Create a Flexible CRM Solution Based on SugarCRM in a vcloud Environment A VMware Cloud Evaluation Reference Document Contents About Cloud Computing Cloud computing is an approach to computing that
HOW TO BUILD A VMWARE APPLIANCE: A CASE STUDY INTRODUCTION Virtual machines are becoming more prevalent. A virtual machine is just a container that describes various resources such as memory, disk space,
How to Install Multicraft on a VPS or Dedicated Server (Ubuntu 13.04 64 bit) Introduction Prerequisites This tutorial will show you step-by-step on how to install Multicraft 1.8.2 on a new VPS or dedicated
OnCommand Performance Manager 1.1 Installation and Setup Guide For Red Hat Enterprise Linux NetApp, Inc. 495 East Java Drive Sunnyvale, CA 94089 U.S. Telephone: +1 (408) 822-6000 Fax: +1 (408) 822-4501
Web Application Hosting Cloud Architecture Executive Overview This paper describes vendor neutral best practices for hosting web applications using cloud computing. The architectural elements described
w w w. u l t i m u m t e c h n o l o g i e s. c o m Infrastructure-as-a-Service on the OpenStack platform http://www.ulticloud.com http://www.openstack.org Introduction to OpenStack 1. What OpenStack is
Documentation Amazon EC 2 Cloud Deployment Guide Jahia delivers the first Web Content Integration Software by combining Enterprise Web Content Management with Document and Portal Management features. Jahia
ovirt and Gluster hyper-converged! HA solution for maximum resource utilization 31 st of Jan 2016 Martin Sivák Senior Software Engineer Red Hat Czech FOSDEM, Jan 2016 1 Agenda (Storage) architecture of
ovirt and Gluster hyper-converged! HA solution for maximum resource utilization 21 st of Aug 2015 Martin Sivák Senior Software Engineer Red Hat Czech KVM Forum Seattle, Aug 2015 1 Agenda (Storage) architecture
The Virtual Appliance includes the same powerful technology and simple Web based user interface found on the Barracuda Web Application Firewall hardware appliance. It is designed for easy deployment on
Parallels Cloud Server White Paper An Introduction to Operating System Virtualization and Parallels Cloud Server www.parallels.com Table of Contents Introduction... 3 Hardware Virtualization... 3 Operating
Zero Data Loss Service (ZDLS) The ultimate weapon against data loss The ultimate protection for your business-critical data In the past, ultimate data protection was a costly issue, if not an impossible
ucloud server User Guide v3.0 (2013.01) KT Revision history Date of revision Version Cause of revision Contents of revision 2011.03.01 2012.02.01 2012.03.01 2012.05.01 2013.01.07 2013.01.08 1.0 2.0 2.1