Software Defined Storage For Dummies（Chap2）
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Software Defined Storage For Dummies（Chap2）
chap2:What Is Software Defined Storage?
Software defined storage is a relatively new concept in the computing and storage industry and can refer to many different technologies and implementations. Software defined storage is part of
a larger industry trendthat includessoftware defined networking(SDN) andsoftware defined data centers(SDDC). This chapter explains exactly what software defined storage is.
##生词、短语
| 生词/短语 | 读音 | 释义 |
|---|---|---|
| JBOD | Just a Bunch Of Disks, 简单磁盘捆绑，磁盘簇 | |
| ILM | information life cycle management，信息生命周期管理 | |
| agility | [ə'dʒɪlətɪ] |
n. 敏捷；灵活；机敏 |
| TCO | Total Cost of Ownership，总拥有成本 | |
| heterogeneous | [,het(ə)rə(ʊ)'dʒiːnɪəs; -'dʒen-] |
adj. [化学] 多相的；异种的；[化学] 不均匀的；由不同成分形成的 |
| in a nutshell | adv. 简单地，简约地；极其简括地说 | |
| acquisition | [,ækwɪ'zɪʃ(ə)n] |
n. 获得物，获得；收购 |
| elastic | [ɪ'læstɪk] |
n. 松紧带；橡皮圈 adj. 有弹性的；灵活的；易伸缩的 |
| magnitude | ['mægnɪtjuːd] |
n. 大小；量级；[地震] 震级；重要；光度 |
| retrieval | [rɪ'triːvl] |
n. 检索；恢复；取回；拯救 |
| modular | ['mɒdjʊlə] |
adj. 模块化的；模数的；有标准组件的 |
| fabric | ['fæbrɪk] |
n. 织物；布；组织；构造；建筑物 |
| resiliency | [rɪ'zɪlɪənsɪ] |
n. 弹性；跳回 |
| higher bar | 更高的门槛，更高的标准 | |
| legacy | ['legəsɪ] |
n. 遗赠，遗产 |
| tape | /teɪp/ |
n. 胶带；磁带；卷尺 vt. 录音 |
| tiering | /'tiəriŋ/ |
n. 排锚链；堆叠；分层布置 |
| ACL | Access Control List,访问控制列表 | |
| compelling | /kəm'pelɪŋ/ |
adj. 引人注目的；强制的；激发兴趣的 |
##基本知识点
- SDS的定义
At its most basic level, software defined storage is enterprise class storage that uses standard hardware with all the important storage and management functions performed in intelligent software. Software defined storage delivers automated, policy-driven, application-aware storage services through orchestration of the underlining storage infrastructure in support of an overall software defined environment.
在最基本的层次上，软件定义存储是企业级存储，它使用标准硬件，在智能软件中执行所有重要的存储和管理功能。 它支持自动化的、策略驱动的、应用程序感知的存储服务，通过存储基础架构下的编排来实现对整个软件定义环境的支持。
- Characteristics of software defined storage
① Automated policy-driven administration for storage management functions, such as information life cycle management (ILM) and provisioning，
存储管理功能的自动策略驱动管理
② Storage virtualization，存储虚拟化
③ Separate control and data planes to manage the storage infrastructure and data in the storage infrastructure, respectively独立的控制和数据平面，分别用于管理存储基础架构中的存储基础架构和数据
④Massive scale-out architecture，大规模的横向扩展架构
- Key Benefits of Software Defined Storage
① Increased flexibility and agility
A software defined storage solution increases flexibility by enabling organizations to use non-proprietary standard hardware and, in many cases, leverage existing storage infrastructure as part of their enterprise storage solution. Additionally, organizations can achieve massive scale with a software defined storage solution by adding individual, heterogeneous hardware components as needed to increase capacity, and improve performance in the solution.
软件定义的存储解决方案通过使组织使用非专有标准硬件，并在许多情况下利用现有存储基础设施作为企业存储解决方案的一部分，增加了灵活性。此外，组织可以通过软件定义的存储解决方案来实现大规模的扩展，通过增加单个、异构的硬件组件来增加容量，并提高解决方案中的性能。
② Intelligent resource utilization and automated management
these software defined storage capabilities enable you to put the right data in the right place, at the right time, with the right performance, and at the right cost — automatically.
SDS使您能够在正确的时间、合适的性能下，将正确的数据自动地放在正确的位置，并花费合适的成本。
③ Cost efficiency
④ Limitless elastic data scaling
- IBM GPFS supports
A maximum file system size of one million yottabytes，
A yottabyte is equal to one trillion terabytes，一万亿TB
263 (or approximately 9 quintillion) files per file syste
IPv6
1 to 16,384 nodes in a cluster
现存的硬件控制存储的缺点：
For them, existing heavy hardware controlled storage solutions simply don’t scale, are prohibitively expensive, and are too inflexible to dynamically expand capacity for application data they envision driving their business needs moving forward.
对他们来说，现有的大型硬件控制存储解决方案根本无法扩展，成本过高，而且不灵活，无法动态扩展他们预期推动其业务需求前进的应用程序数据的容量。
OpenStack
the open source cloud computing platform for public and private clouds.
百度百科对OpenStack的解释
标签：存储,Defined,Storage,storage,defined,Software,Dummies,data,software 来源： https://blog.csdn.net/u014454538/article/details/80255763