NFV (網路功能虛擬化) & 通訊業者的資料中心伺服器:主要的考察 & 技術
NFV & Telco Data Center Servers: Key Considerations & Technologies
|出版日期||內容資訊||英文 22 Pages
|NFV (網路功能虛擬化) & 通訊業者的資料中心伺服器:主要的考察 & 技術 NFV & Telco Data Center Servers: Key Considerations & Technologies|
|出版日期: 2015年07月31日||內容資訊: 英文 22 Pages||
根據本報告提供轉移至NFV (網路功可虛擬化) 而使通訊業者產生新必要條件的相關調查，為了支持通訊業者對效能的要求，揭示對應ETSI (歐洲電訊標準化機構) 的設計目標而採用的技術，還有通訊業者資料中心內的所有服務使用共同基礎設施造成的潛在影響討論，突顯雲端、通訊環境的差異。
One of the most significant changes that network functions virtualization (NFV) will introduce into the telco environment is the use of generic IT servers rather than purpose-built, dedicated hardware platforms to run network applications and services. In addition to lowering the cost of the underlying hardware, it is expected that running virtualized network functions (VNFs) on standardized servers will give telcos greater flexibility, improve resource utilization, and potentially converge networks and IT onto a common infrastructure.
However, these servers are generally designed for enterprise applications, not telecom functions. VNFs consume server hardware resources differently than everyday IT applications. Data plane-heavy functions present a particular challenge. Differences in resource requirements for various categories of application must be well understood in order to ensure the needed performance can be achieved.
The European Telecommunications Standards Institute (ETSI) NFV Industry Specification Group (ISG) has published a series of documents that outline its requirements for the infrastructure to support NFV. The excerpt below summarizes these documents, along with the shorthand we will use to refer to them throughout this report.
Excerpt 1: ETSI NFV Specifications Documents
In its Compute specification, the ETSI NFV ISG states:
The hypervisor-managed approach introduces a performance hit, and several technologies are being proposed to address this. ETSI believes that hypervisors play a key role in creating the execution environment, so it recommends their use rather than bare metal for most applications. Ultimately, ETSI wants services to be cloudified, so that resources can be pooled, shared and dynamically allocated.
In addition, ETSI also presents high-level architectural goals in the areas of portability, reliability, security and manageability, but has stopped short of publishing specifications for the hardware platform. The Open Compute Project (OCP) has developed a reference architecture - but only for servers destined for cloud applications, which differ from telecom applications in important ways. By contrast, the Open Platform for NFV (OPNFV) is focused on telecom, but does not provide any specifications for the underlying hardware platform.
‘NFV & Telco Data Center Servers: Key Considerations & Technologies’ looks at the new requirements that are emerging from telcos as they transition to NFV. It highlights the technologies being deployed to meet ETSI's design goals to support telcos' need for performance, availability and portability. The report discusses workload categories to discern how they can impact underlying hardware decisions, and presents different implementation approaches. It also highlights how cloud and telecom environments differ, with discussion of the potential impact of using common infrastructure for all services within a telco data center.
The report also profiles 10 critical players in this sector*, including both key server vendors and some of their suppliers whose technologies are critical in server platforms.
‘NFV & Telco Data Center Servers: Key Considerations & Technologies’ is structured as follows:
Section I is an introduction to the report, including the key findings of our research.
Section II compares IT and telco workloads, highlighting their similarities and differences. It discusses how cloud and telco data center providers approach design.
Section III discusses the different implementation approaches to servers - bare metal, hypervisor-managed and cloudified. It explains why performance is such an important challenge, and explores the innovations being proposed to address this. It also discusses the role servers play in achieving ETSI's design goals, including the potential use of a disaggregated model.
Section IV provides an overview of key server vendors, along with some of their suppliers whose technologies are critical in server platforms.
‘NFV & Telco Data Center Servers: Key Considerations & Technologies’ is published in PDF format.