廣電行業存儲解決方案

2019-03-21 10:43 來源: 中科曙光
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  • 方案類別:基礎設施

  行業概述

  數字技術的進步,人民欣賞水平的不斷提高,對電視節目的質量提出了越來越高的要求。2010年,廣電總局《電視臺數字化網絡化建設白皮書-高標清同播》的發布,推動了全國各地電視臺編輯制作向高清化的轉變。而3D電視試驗頻道的開播,更是給各電視臺和傳媒機構現有的編輯制作網絡帶來更大的挑戰。

  從標清到高清、從高清到超高清,以及3D制作的需求,現有的編輯制作網的SAN+NAS架構應對這種趨勢,越來越顯得力不從心。DVCPRO、DVCPRO 50等逐漸成為過往,MPEG I 100和DNxHD 120目前雖大行其道,但ProRess 444和DNxHD 444正逐漸滲透至電視臺和傳媒機構的日常編輯制作。

  針對這種情況,曙光推出了ParaStor 200并行存儲系統,其優良的性能和高可擴展性能夠滿足電視臺和傳媒機構當前的編輯制作需求。同時,能夠從容應對未來超高清的需要。

  方案架構

  曙光廣電行業編輯制作網系統拓撲圖如下所示:

  編輯制作網采用IP單網架構(推薦采用萬兆以太網絡),配置上載工作站、編輯制作工作站、中心存儲、后臺應用服務器和配音工作站等。

  編輯制作網的中心存儲采用曙光專門針對大數據量、高并發應用研發的ParaStor 200并行存儲系統,能夠為編輯制作網提供高性能、高可靠、可動態擴展的高度共享的存儲資源池。

  ParaStor 200并行存儲系統含索引控制器oPara、數據控制器oStor、管理控制器MGR和應用服務器客戶端oApp四類組件。其中,oPara索引控制器用于管理存儲系統的所有索引數據和命名空間,對外提供單一的全局映像;oStor數據控制器用于提供數據存儲空間,并實現文件的并行存取;MGR管理控制器提供統一的控制管理界面;oApp應用服務器客戶端向上層應用提供數據訪問接口。

  編輯制作網相關的工作站和服務器等通過IP網絡直接接入中心存儲系統。

  方案優勢

  高性能

  ParaStor 200并行存儲系統的聚合性能隨著oStor數據控制器節點數量的增加而線性增加。根據實際測試結果,oStor數據控制器節點每個插兩塊雙口千兆以太網卡,提供4個數據傳輸通道,單節點可以提供高達150MB/s的寫帶寬和360MB/s的讀帶寬。曙光部署于深圳云計算中心的ParaStor200并行存儲系統、其系統總容量為16PB,可提供高達100多GB/s的聚合帶寬。

  高可擴展性

  傳統的SAN+NAS的存儲架構,能夠滿足當前高清節目的編輯制作需求,但其擴展能力有限。ParaStor 200并行存儲系統支持采用橫向擴展的方式擴充存儲容量和增強對外服務能力。在不改變網絡架構的情況下,通過增加oStor數據控制器數量的方式,能夠線性提升中心存儲的服務能力,且其擴展能力近乎無限,有力支持編輯制作網由高清向超高清的轉變。

  低建設成本

  ParaStor 200支持采用X86架構的存儲服務器作為存儲節點,通過其自身機制實現數據的高可靠性和負載均衡等,能夠有效提高存儲的使用率,降低客戶的總體擁有成本。同時,支持采用IP單網架構,能夠大大降低客戶的管理維護成本。

標簽:

責任編輯:徐向南
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