【文章內容簡介】 0102 Power Utility Wiring 2 (400 V) 1 _________ ________ Serial: N/A Total 51875RZ NAS Engine Model 5RZ 2 0005 10/100 ENET ADAPTER 2 0203 Code Preload 2 N/C _________ ________ Serial: N/A Total 51912RU NAS RAID Storage Controller Model 2RU 1 _________ ________ Serial: N/A Total NAS300 Overall hardware order (Net Charges) Purchase WARNING: One or more prices were not found in the specified price file. If this condition was not anticipated submit a FEEDBACK against the PRICE application for your country. Notes: 1) All list prices are effective as of 06/12/01, and are subject to change without notice. 2) No list prices are provided for multiple maintenance options. 3) All removed parts belong to IBM on any upgrade or Net Priced transaction. 4) Informational totals are calculated based upon current list price and do not reflect the prices actually paid by the customer. Base startingpoint prices show only the recurring charges. Configuration Comments: Customer Requested Arrival Date: 2001/07/03 06/19/01 NAS3240 15:41:27 Initial Hardware Extended Extended Product Description Qty Purchase Maint Term ________ ____________________________________________ _____ _________ ________ ____ 35341RU SAN FIBRE CHANNEL HUB 2 9295 NAS 5195325 Raleigh Fulfillment/Routing 2 N/C _________ ________ Serial: N/A Total 5195325 TotalStorage Network Attached Storage Model 1 N/C 325 0001 English Publications 1 N/C _________ ________ Serial: N/A Total N/C 518636U NAS Rack Model 36U 1 0002 3U Filler Panel 7 0003 Wiring and Labeling 1 0101 Power Utility Wiring 1 (200 V) 1 _________ ________ Serial: N/A Total 51875RZ NAS Engine Model 5RZ 2 0005 10/100 ENET ADAPTER 2 0203 Code Preload 2 N/C _________ ________ Serial: N/A Total 51912RU NAS RAID Storage Controller Model 2RU 2 _________ ________ Serial: N/A Total 51921RU NAS Storage Unit Mod 1RU 7 _________ ________ Serial: N/A Total iSCSI方案目前，全世界每天都要誕生數(shù)以萬計的數(shù)據(jù)量，多數(shù)的地市、部門將應用以TCP／IP協(xié)議作為基礎的網絡環(huán)境。對這些單位來說，既無非常復雜的管理要求，也不可能有大量的資金投入。面對“海量”的數(shù)據(jù)使得許多企業(yè)感到力不從心，只能望洋興嘆。iSCSI技術可以實現(xiàn)在IP網絡上應用SCSI的功能，因而充分利用了現(xiàn)有IP網絡成熟性和普及性的優(yōu)勢，為眾多地市部門級企業(yè)對經濟合理和便于管理的存儲設備提供了直接訪問的能力。如果你想得到便宜的類似SAN功能的方案，你應該關注iSCSI，或者更準確說，關注SCSI over IP的存儲新概念。iSCSI技術簡介iSCSI是SCSI over IP的一項重要成就，它是由IBM與CISCO共同開發(fā)的協(xié)議標準，是一個供硬件設備使用的可以在IP協(xié)議的上層運行的SCSI指令集。簡單的說，iSCSI可以實現(xiàn)在IP網絡上運行SCSI協(xié)議，使其能夠在諸如高速千兆以太網上進行路由選擇。 NAS與iSCSI的核心區(qū)別在于一個是文件級共享，一個是設備級共享。后者是目前NAS存儲的最佳方式，SAN為了承載SCSI協(xié)議的高帶寬，一般采取光纖通道實現(xiàn)聯(lián)網。這樣直接造成實現(xiàn)成本昂貴。