清華網(wǎng)絡存儲技術導論-展示頁
2025-06-01 19:56本頁面
【正文】 ousands of movies. Example 2: Web Servers A largescale website also holds plenty of text, picture , audio and video files. 2. STORAGE REQUIREMENT What disks we choose for our PC? 500MB, then 2GB,10GB, now 160GB, and future 500GB What if it is for a data center? Thousands of GB, and highly scalable 1. Oceanlike storage capacity 2. STORAGE REQUIREMENT(cont.) Largeblock data can be read or written rapidly Desirable data can be located quickly, as finding a needle in a haystack 2. Highspeed data access 2. STORAGE REQUIREMENT(cont.) Data are still available when some disk is destroyed Data won’t be lost even if the whole data center is exploded 3. Data high availability 3. OUR SOLUTION Storage Area Network: replaces the traditional data bus between a host puter and its storage devices with a highspeed data work. 3. OUR SOLUTION(cont.) Makes storage devices into independent resources, easy to extend and distribute Makes data access rapid via the Fibre Channel Network(2GB/s) Storage Area Network: 3. OUR SOLUTION(cont.) Makes storage system tolerant of extreme disasters through the remote mirror. Storage Area Network: 4. CONCLUSION Electronic information is increasing explosively Information increase asks storage systems for higher Quality of service Our solution, Storage Area Network, can meet the requirement better. 網(wǎng)絡存儲技術導論 Network Storage is the puter 內容安排 ? 網(wǎng)絡存儲的意義 ? NS基本概念 –文件系統(tǒng) – 塊設備 – 元數(shù)據(jù) ? NS幾種模型 – NAS – SAN – OSD ? 可靠存儲技術 – 備份 – 鏡像 – 快照 ? 存儲虛擬化 – Host based – Storage based – Fabric based 什么是網(wǎng)絡存儲 ? 網(wǎng)絡存儲： SAN和 NAS – 本地的數(shù)據(jù)存儲總線向網(wǎng)絡延伸 為什么要網(wǎng)絡存儲 ? 大數(shù)據(jù)量應用的推動 – , , emerce, vod ? 提出新的需求 – 高容量：海量，且可擴展 – 高性能：快速的訪問、定位 – 高可用：個別磁盤失效，甚至整個中心被毀 –低成本： TCO= D(部署 ) + M(維護 ) * t(時間 ) 容量需求 容量需求 管理需求 ? 管理成本 存儲領域的基本概念 ? 基本概念
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