ParaStor云存储系统介绍
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第一章概述1.1.什么是并行存储系统并行存储系统基于一种开放式的存储架构,采用并行文件系统,将多台物理存储设备(这些物理设备可以是磁盘阵列,也可以是通用的存储服务器)的存储空间虚拟成一个具有统一访问接口和管理界面的存储池(也叫统一命名空间)。
应用服务器通过统一访问接口获得所需得存储资源。
用户的数据按照一定的负载均衡策略,条带化的分布到后台的多套存储设备上,从而能够实现数据的并行读写以获得更高的并发访问性能,充分利用多台存储设备的性能和更大的存储容量,并有效的提高存储空间利用率,并且所有的存储设备可以实现统一的管理和监控,大大减轻了管理工作负担!1.2.并行存储系统的特点⏹开放式架构(高扩展性)。
开放式架构是针对并行存储系统内部构成单元而言。
并行存储系统通常包括元数据单元、数据单元、网络单元、客户端单元,每个单元都可以按需进行动态扩展,并且每个单元可以开放的采用其业界最新的技术,而无需改变系统架构。
⏹并行文件系统。
并行文件系统是并行存储系统的灵魂所在,所有对并行存储系统的操作都经由并行文件系统统一调度和分发,分散到并行存储系统各个数据节点上完成。
⏹全局统一命名空间。
全局统一命名空间在很多厂家的存储概念中都出现过,在并行存储系统中全局统一命名空间强调的是同一个文件系统下的统一命名空间。
⏹易管理性。
并行存储系统通常能够提供一种集中的、简便易用的管理方式,不需要修改或重新编译客户端操作系统,采用文件系统提供的高速客户端软件或是业界标准的访问协议访问存储系统。
而且,随着存储容量的增加,客户不需要增加额外的管理人员,将精力更多的投向自己的应用领域。
⏹动态负载均衡。
在并行存储系统中,前端访问存储系统的读写操作,通过并行文件系统的负载均衡策略,将数据访问分散到存储系统的各个数据节点上,大大减轻了每个节点的负载。
而后端访问数据,通过开放式的架构和存储网络,数据会分布在所有存储设备上进行存放和读取,每个读写操作都由更多的磁盘参与,因此大大的提高了读写操作的性能。
信息技术的发展带来数据的爆炸性增长,毋庸置疑,我们已经全面跨入大数据时代,PB 规模的非结构化数据越来越常见,如何有效地管理这些数据,并进一步发掘数据价值,已成为IT 管理者所必须重视的问题。
同时大数据4V 特性也对存储系统的大容量、高性能、易扩展、易用性等提出了更高要求。
传统的SAN 和NAS 存储架构已经难以满足海量数据的密集型I/O 并发访问需求。
ParaStor300S 并行分布式云存储系统,是在曙光公司近10年来海量数据存储与处理的基础之上,针对大数据时代的特点,全新设计并全面优化的高端存储系统。
产品定位 集群文件/对象统一存储 基于曙光完全自主研发的并行分布式软件ParaStor 构建的集群存储系统,对外统一提供多种存储协议: 提供文件存储服务,包括Linux POSIX 、NFS 、SMB 、FTP 等,满足Windows 、Linux 、Unix 等异构平台的不同访问需求; 提供对象存储服务,兼容Amazon S3接口,满足云生态的应用需求。
特别地,同一集群可以同时提供文件/对象接口,访问方式更为灵活。
Scale-Out 横向扩展的并行架构 基于服务器构建的并行分布式存储系统,对外提供单一的命名空间。
支持3~4096节点的弹性无缝扩展,单一存储空间容量可扩展至EB 级。
具备超强的横向扩展能力,只需简单地增加存储节点,即可获得更大的存储容量和更多的数据通道,从而获得更高的系统聚合带宽和I/O 性能。
面向海量非结构化数据存储场景 ParaStor300S 并行分布式云存储系统适用于存在数据共享需求的多种应用领域,如高性能计算、生物信息、气象预报、环境监测分析、地震监测、能源勘探、卫星遥感、视频监控、媒资管理、视频编辑处理等,可以广泛应用于政府、教育、科研、医疗、石油、广电、企业等行业。
ParaStor300S 并行分布式云存储系统新一代自主研发的海量非结构化数据存储 EB 级共享空间⚫ 3~4096节点⚫ 单一命名空间⚫ 按需分配,在线扩容多种访问协议 ⚫ Linux POSIX⚫ NFS/CIFS/FTP⚫ S3多款硬件平台⚫ 2U12、4U24、4U36⚫ SATA/SAS/SSD 混插智能存储策略⚫ SSD 读缓存加速⚫ 细粒度配额管理多重数据保护⚫ 2~4副本⚫ N+M:b 纠删码⚫ 快照⚫ 全冗余设计,无单点故障简易运维管理⚫ 多套集群统一管理⚫ 资源、状态实时监控⚫ 邮件、短信、SNMP 告警系统架构 ParaStor300S 并行分布式云存储系统(下文简称为ParaStor300S )的整体逻辑架构如图 1所示:NFS CIFS FTP 硬件节点层数据处理层应用协议层存储节点池Node Node …...Node Node Node …...Node 存储节点池Node Node …...Node Node Node …...NodePOSIX S3UNIX/LINUX Windows 图 1 系统架构ParaStor300S 基于服务器构建,多个节点构成硬件资源池;数据处理层将硬件资源池统一管理,对外提供单一的命名空间;通过POSIX 、集群NAS (NFS 、CIFS 、FTP )、S3等协议供上层应用访问。
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