Dell EMC VxRail Appliance：超融合基础设施解决方案解析

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"VxRail Technical Book 是一本关于Dell EMC VxRail Appliance的技术书籍，专注于介绍由VMware vSAN驱动并内置Intel技术的超融合基础设施解决方案。本书旨在提供该产品的概念和架构评审，讨论超融合基础设施如何推动数字化转型，并详细介绍VxRail Appliance作为领先的超融合技术解决方案的角色。" 在当今的数字化时代，IT的新挑战在于引领数字化转型。Dell EMC致力于通过其产品和服务帮助客户实现更快的业务成果和更简单的IT管理。VxRail Appliance是加速IT转型的关键工具，它支持企业完全转型到混合云环境，使企业能够创新而非仅仅集成现有系统。超融合基础设施（HCI）是一种现代的IT基础设施，专为应对现代IT挑战而设计。它集成了计算、存储、网络和管理功能，以简化数据中心的操作并提高效率。VxRail Appliance利用了如VMware vSAN这样的关键性技术，这些技术提供了构建高效、可扩展且灵活的数据中心的基础。驱动超融合基础设施采纳的因素包括对简化运维、降低成本、提高资源利用率和增强业务敏捷性的需求。Dell EMC的超融合基础设施平台，如VxRail，正是为了满足这些需求而设计的。它们提供了一体化的解决方案，能够在单一管理平台上实现虚拟化、存储和网络的统一管理，从而减少复杂性并提升IT响应速度。书中详细阐述了VxRail Appliance的主要特性，如自动化部署、无缝扩展能力以及与VMware的紧密集成，这些特性使得VxRail成为企业进行数字化转型的理想选择。此外，书中可能还会深入探讨VxRail在灾难恢复、性能优化、数据保护和云集成等方面的应用。 "VxRail Technical Book" 是一本全面了解Dell EMC VxRail Appliance及其在超融合基础设施领域作用的重要参考资料，对于那些寻求优化IT基础设施、推动企业数字化转型的专业人士来说，是一份不可或缺的读物。

15 | Dell EMC VxRail Appliance TechBook

Dell EMC VxRail Appliances

VxRail Appliances are jointly developed by Dell EMC and VMware and are the only fully

integrated, preconfigured, and tested HCI appliance powered by VMware vSAN technology for

software-defined storage. Managed through the ubiquitous VMware vCenter Server interface,

VxRail provides a familiar vSphere experience that enables streamlined deployment and the

ability to extend the use of existing IT tools and processes.

VxRail Appliances are fully loaded with integrated, mission-critical data services from Dell EMC

and VMware including compression, deduplication, replication, and backup. VxRail delivers

resiliency and centralized-management functionality enabling faster, better, and simpler

management of consolidated workloads, virtual

desktops, business-critical applications, and

remote-office infrastructure. As the exclusive hyper-

converged infrastructure appliance from Dell EMC

and VMware, VxRail is the easiest and fastest way

to stand up a fully virtualized VMware environment.

VxRail is the only HCI appliance on the market that

fully integrates Intel-based Dell EMC PowerEdge

Servers with VMware vSphere, and vSAN. VxRail is

jointly engineered with VMware and supported as a

single product, delivered by Dell EMC. VxRail

seamlessly integrates with existing (and optional)

VMware eco-system and cloud management

solutions, including vRealize, NSX, Horizon and any

solution that is a part of the vast and robust

vSphere ecosystem.

VxRail provides an entry point to the software

defined datacenter (SDDC) for most workloads.

Customers of all sizes and types can benefit from

VxRail, including small- and medium-sized

environments, remote and branch offices (ROBO),

and edge departments, as well as providing a solid

infrastructure foundation for larger data centers.

Small-shop IT personnel benefit from the simplicity

of the appliance model to expedite the application-

deployment process while still taking advantage of

data services only typically available in high-end

systems.

Larger data centers benefit by rapid deployment

where a complete vSphere environment can be

installed and be ready to deploy applications within

few hours of the system arriving on site. VxRail

allows businesses to start small and scale non-

disruptively. Storage is configured to meet appropriate application capacity and performance

requirements.

In addition, nodes are available with different compute power, memory, and cache

configurations to closely match the requirements of new and expanding use cases. As

VxRail essentials

 Fully integrated, preconfigured,

and tested hyper-converged

infrastructure appliance simplifies

and extends VMware

environments

 Seamlessly integrates with

existing VMware eco-system

management solutions for

streamlined deployment and

management in VMware

environments.

 Start small, with a few as three

nodes. Single node scaling,

storage capacity expansion, and

vSphere license independence

enable growth that meets

business demands.

 Backup distributed applications or

workloads with integrated data

protection options, including

RecoverPoint for VMs.

 Single point of global 24x7 support

for both the hardware and

software

16 | Dell EMC VxRail Appliance TechBook

requirements grow, the system easily scales out and scales up in granular increments. Finally,

because the VxRail is jointly engineered, integrated, and tested, organizations can leverage a

single source of support and remote services from Dell EMC.

VxRail environments are configured as a cluster consisting of a minimum of three server nodes,

with each node containing internal storage drives. VxRail systems are delivered with the

software loaded, ready to attach to a customer-provided network. While most environments use

10Gb Ethernet for internal and external communications, 1Gb Ethernet connectivity is also

available. Using a simple wizard at the time of install, the system can be configured to match

unique site and networking requirements.

VxRail Appliances enable organizations to start small and scale out as the IT organization

transforms and adapts to managing converged infrastructure versus silos. With a rich set of data

services, including data protection, tiering to the cloud, and active-active data center support,

VxRail can be the foundational infrastructure for IT. Best of all, you can simply add new

appliances into existing clusters (and decommission aging appliances) to provide an evergreen

HCI environment, never having to worry about costly SAN data migrations ever again. As

organizations continue to transform to a cloud model, integration with the VMware vRealize

Suite enables full cloud automation and service delivery capabilities.

Dell EMC VxRail Appliances offer a choice of Dell EMC PowerEdge servers, powered by new

Intel® Scalable® processors, variable RAM, and storage capacity, allowing customers to buy

what they need now. The VxRail Appliance uses a modular, distributed system architecture that

starts with as few as three nodes and scales near linearly up to 64 nodes,Single-node scaling

and storage capacity expansion provide a predictable, “pay-as-you-grow” approach for future

scale up and out as business and user requirements evolve.

The VxRail software layers use VMware technology for server virtualization and software-

defined storage. VxRail nodes are configured as ESXi hosts, and VMs and services

communicate using the virtual switches for logical networking. VMware vSAN technology,

implemented at the ESXi-kernel level, pools storage resources. This highly efficient SDS layer

consumes minimal system resources, making more resources available to support user

workloads. The kernel-level integration also dramatically reduces the complexities involved in

infrastructure management. vSAN presents a familiar datastore to the nodes in the cluster and

Storage Policy Based Management provides the flexibility to easily configure the appropriate

level of service for each VM.

VxRail Manager, the VxRail management platform, is a strategic advantage for VxRail and

further reduces operational complexity. VxRail Manager provides out-of-the-box automation and

orchestration for day 0 to day 2 appliance-based operational tasks, which reduces the overall IT

OpEx required to manage the stack. No build-it-yourself HCI solution provides this level of

lifecycle management, automation, and operational simplicity. With VxRail Manager, upgrades

are simple and automated with a single-click. You can sit back and relax knowing you are going

from one good known state to the next, inclusive of all the managed software and hardware

component firmware. No longer do you need to verify hardware compatibility lists, run test and

dev scenarios, sequence and trial upgrades, and so on. The heavy lifting of sustaining and

lifecycle management is already done for you.

VxRail Manager presents a simple dashboard interface for infrastructure monitoring and

automation of lifecycle management tasks such as software upgrades. Since VxRail nodes

function as ESXi hosts, vCenter Server is used for VM-related management, automation,

monitoring, and security.

17 | Dell EMC VxRail Appliance TechBook

VxRail Appliances are powered by VMware vSAN software, which is fully integrated in the

kernel of vSphere and provides full-featured and cost-effective software-defined storage. vSAN

implements an efficient architecture, built directly into hypervisor. This distinguishes vSAN from

solutions that typically install a virtual storage appliance (VSA) that runs as a guest VM on each

host. Embedding vSAN into the ESXi kernel layer has advantages in performance and memory

requirements. It has little impact on CPU utilization (less than 10 percent) and self-balances

based on workload and resource availability. It presents storage as a familiar data store

construct and works seamlessly with other vSphere features such as VMware vSphere vMotion.

vSphere is a well-established virtualization platforma familiar usable entity in most data

centers. Dell EMC leverages vSphere for ESXi-based virtualization and VM networking in

multiple product offerings, and they support a common set of VMware and Dell EMC services.

This enables a VxRail implementation to integrate smoothly into VMware-centric data centers

and to operate in concert with Dell EMC converged, hyper converged, and traditional storage

offerings. NSX for SDN can optionally be added to the VxRail solution. NSX for SDN allows all

datacenter assets to be maintained using a single administrative platform. Monitoring,

upgrading, and diagnostics activities are performed efficiently and reliably.

Additional data services integrated into VxRail include RecoverPoint for VM replication and Dell

EMC Remote Secure Services (ESRS).

To summarize, VxRail creates IT certainty. It is built on the enterprise-proven VMware

hypervisor, powered by vSAN technology, delivers simplified lifecycle and daily operational

management, and supports the dynamic and robust vSphere ecosystem. The system

architecture is designed to predictably evolve with the business. The system scales by

deploying preloaded appliances to effortlessly extend the environment, rather than by building

and manually integrating servers.

VxRail, powered by vSAN and featuring Intel-based Dell EMC PowerEdge Servers, continues to

evolve so business can thrive without worrying about the IT infrastructure. VxRail is a fully

integrated, preconfigured, and pre-tested VMware hyper-converged infrastructure appliance

family. Based on VMware’s vSphere and powered by vSAN and Dell EMC software, the VxRail

Appliance provides the IT infrastructure foundation for digital transformation that empowers

organizations to continuously innovate.

18 | Dell EMC VxRail Appliance TechBook

VxRail hardware architecture

The Dell EMC VxRail Appliance family is the standard in hyper-converged infrastructure,

providing extreme flexibility to granularly add capacity and performance on demand and

enabling customers to easily extend use cases across the VMware virtualized environment. The

appliance-based design allows IT centers to scale capacity and performance non-disruptively,

so they can start small and grow incrementally with minimal up-front planning. VxRail

environments can be designed to support a small number of virtual machines and scale to

thousands.

The VxRail architecture enables a predictable pay-as-you-grow approach that aligns to

changing business goals and user demand. Dell EMC and VMware are continuously innovating,

and VxRail introduced new Dell EMC PowerEdge-based models that offer extreme configuration

flexibility. This flexibility allows customers to choose performance, graphics, and capacity as

required for VMware environments, and supports more use cases.

The Dell EMC VxRail family of appliances offers a range of platforms:

 E Series—cost-optimized entry point for space constrained data centers, edge sites, and

ROBO deployments with support for smaller and lower-cost nodes in three-node clusters

 P Series—performance optimized for high-end use cases with business-critical,

performance-intensive applications and/or in-memory databases

 V Series—VDI optimized for specialized use cases with graphics intensive applications

such as high-end 2D/3D visualization applications; the only series that supports GPU cards

 S Series—storage-dense configurations targeted at specialized use cases that require

higher storage capacity at the server level such as Big Data, analytics, or collaboration

applications

The E, P, V, and S Series are single-node appliances based on Dell EMC PowerEdge server

technology, the number-one selling X86 server platform, with greater storage capacity, larger

memory, and more powerful CPU options.

VxRail Appliances are built using a distributed-cluster architecture consisting of modular blocks

that scale linearly as the system grows from as small as three nodes to as large as 64 nodes.

Nodes are available with different form factors, with single-node appliances for use cases: entry-

level systems; performance optimized; VDI optimized with GPU; and storage-optimized

configurations supporting high-capacity HDD drives.

Extensive compute, memory, and storage options are designed to fit multiple use cases.

Customers can choose from a range of next-gen Intel processors, variable memory sizes,

storage, and cache capacity to provide the right balance of compute, memory, and storage.

Single-node scaling and a low-cost entry point let customers buy just the right amount of

storage and compute for today’s requirements and effortlessly scale to accommodate

tomorrow’s growth. Systems are available with all-flash storage configurations that deliver the

industry’s most powerful HCI for applications that demand maximum performance and low

latency.

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