Cloud Computing

ESX vs ESXi - Choose the best for your environment

2010-12-13T06:57:00.000-08:00

VMware ESX and ESXi 4.1 Comparison

Purpose

This article provides a detailed comparison of VMware ESX and ESXi 4.1. The article is separated into capabilities or features and compared at that level.

Resolution

Capability	VMware ESX	VMware ESXi
Service Console	Service Console is a standard Linux environment through which a user has privileged access to the VMware ESX kernel. This Linux-based privileged access allows you to manage your environment by installing agents and drivers and executing scripts and other Linux-environment code.	VMware ESXi is designed to make the server a computing appliance. Accordingly, VMware ESXi behaves more like firmware than traditional software. VMware has created APIs through which monitoring and management tasks – traditionally done through Service Console agents – can be performed. VMware has provided remote scripting environments such as vCLI and PowerCLI to allow the remote execution of scripts and commands. Tech Support Mode (TSM) provides a command-line interface that can be used by the administrator to troubleshoot and correct abnormal conditions on VMware ESXi hosts.
CLI-Based Configuration	VMware ESX Service Console has a host CLI through which VMware ESX can be configured. VMware ESX can also be configured using vSphere CLI (vCLI) or vSphere PowerCLI.	The vSphere CLI (vCLI) is a remote scripting environment that interacts with VMware ESXi hosts to enable host configuration through scripts or specific commands. It replicates nearly all the equivalent COS commands for configuring ESX. VMware vSphere PowerCLI is a robust command-line tool for automathing all aspect of vSphere management, including host, network, storage, virtual machine, guest operating system, and more. Notes: vCLI, PowerCLI, and vSphere SDk for Perl are limited to read-only access for the free vSphere Hypervisor edition. To enable full functionality of vCLI on a VMware ESXi host, the host must be licensed with vSphere Essentials, vSphere Essential Plus, vSphere Standard, vSphere Advanced, vSphere Enterprise, or vSphere Enterprise Plus. Certain COS commands have not been implemented in the vCLI because they pertain to the management of the COS itself and not ESXi. For details, please see the vSphere Command-Line Interface Documentation.
Scriptable Installation	VMware ESX supports scriptable installations through utilities like KickStart.	VMware ESXi supports scriptable installations using a mechanism similar to Kickstart, and includes the ability to run pre- and post-installation scripts. VMware ESXi also provides support for post installation configuration using PowerCLI- and vCLI-based configuration scripts.
Boot from SAN	VMware ESX supports boot from SAN. Booting from SAN requires one dedicated LUN per server.	VMware ESXi may be booted from SAN. This is supported for Fibre Channel SAN, as well as iSCSI and FCoE for certain storage adapters that have been qualified for this capability. Please check the Hardware Compatibility List for supported storage adapters.
Serial Cable Connectivity	VMware ESX supports interaction through direct-attached serial cable to the VMware ESX host.	VMware ESXi does not support interaction through direct-attached serial cable to the VMware ESXi host at this time.
SNMP	VMware ESX supports SNMP.	VMware ESXi supports SNMP when licensed with vSphere Essentials, vSphere Essential Plus, vSphere Standard, vSphere Advanced, vSphere Enterprise, or vSphere Enterprise Plus. The free vSphere Hypervisor edition does not support SNMP.
Active Directory Integration	VMware ESX provides native support for Active Directory integration.	VMware ESXi provides native support for Active Directory integration.
HW Instrumentation	Service Console agents provide a range of HW instrumentation on VMware ESX.	VMware ESXi provides HW instrumentation through CIM Providers. Standards-based CIM Providers are distributed with all versions of VMware ESXi. VMware partners include their own proprietary CIM Providers in customized versions of VMware ESXi. These customized versions are available either from VMware’s web site or the partner’s web site, depending on the partner. Remote console applications like Dell DRAC, HP iLO, IBM RSA, and FSC iRMC S2are supported with ESXi.
Software Patches and Updates	VMware ESX software patches and upgrades behave like traditional Linux based patches and upgrades. The installation of asoftware patch or upgrade may require multiple system boots as the patch or upgrade may have dependencies on previous patches or upgrades.	VMware ESXi patches and updates behave like firmware patches and updates. Any given patch or update is all-inclusive of previous patches and updates. That is, installing patch version “n” includes all updates included in patch versions n-1, n-2, and so forth. Furthermore, third party components such as OEM CIM providers can be updated independently of the base ESXi component, and vice versa.
vSphere Web Access	vSphere Web Access is only experimentally supported in VMware ESX.	VMware ESXi does not support web access at this time.
Licensing	For licensing information, see theVMware Sphere Editions Comparison.	For licensing information, see theVMware Sphere Editions Comparison.
Diagnostics and Troubleshooting	VMware ESX Service Console can be used to issue command that can help diagnose and repair support issues with the server.	VMware ESXi has several ways to enable support of the product: Remote command sets such as the vCLI include diagnostic commands such as vmkfstools, resxtop, and vmware-cmd. The console interface of VMware ESXi (known as the DCUI or Direct Console User Interface) has functionality to help repair the system, including restarting of all management agents. Tech Support Mode, which allows low-level access to the system so that advanced diagnostic commands can be issues. For more information, seeUsing Tech Support in ESXi 4.1 (1017910).
Jumbo Frames	VMware ESX 4.1 fully supports Jumbo Frames.	VMware ESXi 4.1 fully supports Jumbo Frames.

The Promise of Cloud Computing

2010-12-10T12:41:00.000-08:00

The Promise of Cloud Computing

CREATE AN EFFICIENT, RELIABLE AND AGILE CLOUD INFRASTRUCTURE

As IT infrastructures have become more complex and more brittle, nearly 70% of a typical IT budget is going just toward maintenance, leaving few resources to support strategic efforts and innovation. What you need is a means to automate routine tasks and provisioning, flexibly deliver computing resources when and where needed without over-provisioning, and grow and change without limiting your future choices of operating systems, hardware or applications.

Cloud computing is the means to that end, empowering you to respond rapidly and with flexibility to business stakeholders while freeing up underused resources for higher utilization. Enabling IT as a service gives your business what it needs while retaining the control IT needs. Applications and virtual machines are provisioned automatically while resources are pooled and delivered on-demand according to business-driven policies, letting you build a self-managing virtual infrastructure for increased efficiency and agility - all while cutting costs, of course.

Get Comprehensive Security for the Cloud

You won't need to sacrifice security, control or compliance on your journey to the cloud. With the VMware vShield family of security solutions, you get virtualization-aware protection that adapts to dynamic cloud environments, making it "better-than-physical." Reduce the complexity of endpoint, application and edge network security by improving visibility and accelerating compliance, all within a single framework. Get unrivalled security solutions for cloud environments based onVMware vSphere, including:

The unique introspection capabilities of the VMware vSphere platform give you access to detailed logs for auditing and compliance without relying on agents in each virtual machine, which are themselves vulnerable to security threats. In addition to leveraging these capabilities in our own products, we're also exposing interfaces to our key security industry partners for integration with broader solutions. The result is better-than-physical security for applications and data in the cloud.

Reduce the Complexity of Endpoint, Application and Edge Network Security

Consolidate your security infrastructure and eliminate the need for software agents, dedicated security appliances and air-gapped solutions. Leverage capabilities like live migration, automated load balancing and virtual machine restarts knowing that the security is always on and stays with each virtual machine. Maintain compliance, trust and network segmentation of users and sensitive data while being able to respond rapidly to business needs.

Leverage Existing Security Solutions

Existing antivirus investments can be leveraged while reducing footprint in virtual machines. VMware vShield is extensible and easily integrated with existing security products so you can transpose existing network, application and endpoint security onto the virtual infrastructure while moving toward a 100% cloud-enabled security framework. This adaptive, virtualization-aware approach gives you better-than-physical security for your datacenter.

VmWare VCP Sure Shot Dump

2010-12-10T07:18:00.001-08:00

VMware VCP-410 Tests

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2010-12-08T13:08:00.000-08:00

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Vmware Cloud Computing

2010-11-29T11:24:00.000-08:00

How Cloud Is Transforming IT

IT organizations must respond to increasing demands from business stakeholders. Virtually every decision business makes involves IT, and in business where first movers gain competitive advantage, IT responsiveness and agility matter. Yet many IT organizations struggle to meet business needs in a timely way because their applications and services run on infrastructures that are too costly to manage and challenging to change.

Today’s IT organizations, faced with decreasing resources and increasing business needs, are looking to cloud computing to provide a more efficient, flexible and cost-effective model for delivering IT to business: IT as a Service.

While cloud computing provides the approach, VMware delivers a pragmatic path and customer-proven solutions that allow organizations to preserve existing technology investments, while achieving the goal of enabling IT as a Service.

The Promise of Cloud Computing

The most effective transition to a cloud computing approach enables organizations to yield the following benefits:

Efficiency Through Utilization and Automation
In addition to the known cost savings, cloud computing and the VMware approach deliver lower total cost of ownership (TCO) by minimizing unnecessary IT infrastructure investments, providing efficient management and maintenance tools, and preventing technology lock-in. They help IT to adopt a more cost-effective, self-managed, dynamically optimized environment for the most efficient delivery of IT services. They provide additional flexibility by developing and deploying applications that can run in the datacenter or at a cloud service provider. With this cloud computing approach, organizations move toward an infrastructure that uses policy-driven management and automation to monitor itself, self-optimizing for load and demand on the applications, based on usage.
Agility with Control
The VMware cloud computing approach also dramatically simplifies IT services provisioning and deployment, so IT organizations can respond more quickly to business needs. At the same time, it allows IT staff to implement policies consistent with business and governance requirements, providing the control IT needs to minimize business and regulatory risk. An effective cloud strategy also means ensuring security and eliminating the need to constantly reconfigure static security infrastructure for this dynamic computing environment. Cloud computing allows IT organizations to maintain full control over the availability, reliability, scalability, security and service level agreements (SLAs) for all workloads.
Freedom of Choice
With the VMware cloud computing approach, organizations gain the flexibility to retain existing operating system and application stacks, yet deploy them internally or externally with any VMware vCloud™ service provider. IT staff can continue to support traditional systems, while removing many of the headaches associated with them—system porting, security patches and more. They can also gain more predictable performance. Cloud computing delivers more freedom to users without sacrificing IT staff control. End users can consume IT services from traditional applications, onsite cloud applications and external service provider offerings, and have rapid access to their data anytime, anywhere. Meanwhile, VMware end-user computing solutions provide freedom to manage access to applications and services by policies across platforms and devices.

VMware’s Approach

Virtualization is the essential catalyst for enabling the transition to cloud computing. VMware, the global leader in virtualization and cloud infrastructure, builds on virtualization to deliver cloud infrastructure and management solutions, cloud application platform solutions and end-user computing solutions that significantly reduce IT complexity.

VMware’s leadership has brought together a broad range of more than 25,000 technology and service partners. VMware is also the industry-leading vendor of core cloud infrastructure to the broadest set of cloud service providers—more than 2,600 vCloud service providers. In addition, VMware is working closely with leading cloud providers such as Bluelock, Colt, SingTel, Terremark and Verizon to deliver new VMware vCloud Datacenter Services. VMware vCloud Datacenter Services are a new breed of enterprise-class hybrid cloud services, offering agility coupled with the security, interoperability and control that enterprises demand. VMware vCloud Datacenter Services are built on a VMware developed architecture and certified by us to be compatible and secure, in contrast to commodity public cloud services.

VMware enables organizations to energize their business, while saving energy— financial, human and the Earth’s. Its customer-proven solutions provide organizations with all of the capabilities necessary to achieve the benefits of cloud computing.

Security

Virtualization is indispensable for transitioning legacy applications to new cloud infrastructures and a critical security enabler in a cloud environment. VMware provides the foundation for the next generation of cloud security to address the challenges of securing applications and data in the cloud. VMware solutions offer unique introspection capabilities that help to identify hard-to-detect problems and enable comprehensive security controls. These capabilities result in better performance, reduced complexity and more comprehensive security protection.

With VMware solutions, organizations can be assured security policies can be rapidly implemented and monitored for IT compliance while maintaining the relevant levels of control and visibility into ownership domains. They can make security agile, so IT staff can leverage dynamic capabilities, such as live migration, and ensure that the security policies follow the IT service seamlessly. They can also deliver a single, cost-effective framework for the comprehensive protection of cloud deployments.

Automation and Management

Instead of spending valuable time managing physical infrastructure or applications, VMware solutions enable organizations to focus on innovation and delivering value to the business. Once all hardware resources are pooled into virtual building blocks and service-levels are defined with associated applications, organizations can deploy an automation plan based upon business rules and application needs. Cloud automation and cloud management drive the ultimate efficiency in IT, mapping plans and policies to the business and defining them within the service delivery mechanism (applications and services delivered according to service-levels) of the cloud.

Automation and management rules applied to the cloud infrastructure effectively lead to a zero-touch infrastructure, where IT is available as a service. IT organizations also can better manage risk with an approach to cloud computing that retains the security, control and compliance that the business demands.

Interoperability and Openness

In addition to serving as a secure foundation for cloud computing, VMware solutions ensure application portability between internal datacenters and external hosting and service provider clouds from VMware vCloud partners. This enables applications to run with little or no modification internally or externally. Beyond infrastructure, VMware offers a cloud application platform that allows developers to create portable cloud applications that further enhance an organization’s ability to respond to change. Today, more than 2 million developers worldwide rely on VMware cloud application platform solutions to create rich applications that are portable, dynamic, scalable and optimized for cloud-scale deployment, including deployment on popular public cloud offerings such as VMforce and Google App Engine. IT staff can extend this agility to end users by leveraging VMware solutions to dynamically provision and manage cloud-ready IT services securely across any device.

VMware solutions ensure application mobility and portability between clouds within a common management and security model. They are based on open standards, including the Open Virtualization Format (OVF), which has been adopted as an American National Standards Institute (ANSI) standard. They also extend to a large ecosystem of service providers.

Self-Service for the Cloud

At the application or service layer, cloud computing offers a new service consumption approach that applies standardization and automation to enable rapid service provisioning. By standardizing processes, increasing automation and delivering IT as a Service, VMware solutions help drive additional savings beyond virtualization, while significantly reducing the amount of maintenance required per IT administrator.

Instead of waiting for manual IT procurement and provisioning processes, lines of business are able to consume services exactly when they need them. With new VMware products, IT organizations can now deliver standardized IT services on shared infrastructure through a Web-based catalog. By standardizing these service offerings, organizations can simplify many IT management tasks—from troubleshooting and patching to change management—and eliminate much of the administrative maintenance that burdens an IT team today. They can also automate provisioning through policy-based workflows that empower validated users to deploy preconfigured services with the click of a button. Meanwhile, IT retains control over policies and billing that govern service usage.

Pooling & Dynamic Resource Allocation

The private cloud changes an IT organization’s approach to resource management from discrete hardware to virtualized pools of shared resources, including servers, storage and networking. By virtualizing all IT resources, IT staff sees increased resource utilization rates and dynamic distribution of resources toward high-priority applications.

These shared resource pools are abstracted into logical building blocks that consist of storage, network and server units, effectively creating virtual data centers. Based on business demands, these resource containers can be constructed to provide specific service-levels or meet particular business needs, or they can be divided by logical business units or functions (for instance, sales, finance or R&D). By standardizing on a set of well-defined offerings, organizations can evolve toward a policy-driven approach to computing.

Evolutionary Path to IT as a Service

IT as a Service is the transformation of IT to a more business-centric approach, focusing on outcomes such as operational efficiency, competitiveness and rapid response. This means IT shifts from producing IT services to optimizing production and consumption of those services in ways consistent with business requirements. This changes the role of IT from a cost center to a center of strategic value.

VMware accelerates the transition to cloud computing. To begin enabling improved service delivery, organizations should follow these steps:

First, begin with virtualization and leverage legacy investments. Since virtualization is the foundation for cloud computing and IT as a Service, the first task for any organization transitioning to the cloud is to virtualize the majority of its environment, including business-critical applications. This allows IT staff to guarantee service levels more easily and economically.

The second step is to turn the IT department into an agile and user-friendly internal service provider. This requires exposing IT services to internal users through Web-based portals as a fully automated, catalog-based service. Whenever internal users need IT services, they should be able to get them quickly and easily. In addition, IT staff must offer a new level of automation to minimize cost and ensure control and compliance. VMware offers new cloud infrastructure and management solutions designed specifically for dynamic environments. They enable policy-driven automation and deliver IT management as an intrinsic part of the system. Using them, organizations can achieve the efficiency, control and compliance needed to move from cost center to service provider.

Third, deploy a private cloud. A private cloud built on VMware technology enables an IT department to transform into an efficient, agile and user-friendly internal service provider. IT staff can build and deploy a private cloud today that yields improved IT efficiency and agility while enhancing security and choice. At the same time, deploying a private cloud on the VMware platform provides a practical path to the highly scalable, high-performance public clouds being built by recognized service providers leveraging the VMware platform.

By adopting the leading platform chosen by the largest number of enterprises and service providers, organizations have the choice to place any of their workloads in the optimal location. At the same time, they fully retain the ability to move workloads between or across private and public cloud infrastructure—benefiting from a hybrid private-public cloud approach.