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1、往鏈科技www.WL 往鏈點點通共享資源，了解更多請登錄www.WL Microsoft Windows?Server?2003 and Microsoft?Windows?Storage?Server?2003: Meeting the Storage Challenges of Today’s Businesses Microsoft Corporation Published: July 2003 Abstract Businesses of all sizes are seeking cost effective storag

2、e management solutions that keep critical data protected and highly available. This white paper outlines the major storage challenges facing today’s businesses, and shows how the integrated storage services in Microsoft? Windows Server??2003 and Microsoft Windows??Storage?Server?2003 provide managea

3、ble, reliable and cost effective solutions designed to meet those challenges. The information contained in this document represents the current view of Microsoft Corporation on the issues discussed as of the date of publication. Because Microsoft must respond to changing market conditions,

4、 it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information presented after the date of publication. This White Paper is for informational purposes only. MICROSOFT MAKES NO WARRANTIES, EXPRESS OR IMPLIED, AS TO THE INFOR

5、MATION IN THIS DOCUMENT. Complying with all applicable copyright laws is the responsibility of the user. Without limiting the rights under copyright, no part of this document may be reproduced, stored in or introduced into a retrieval system, or transmitted in any form or by any means (electronic,

6、 mechanical, photocopying, recording, or otherwise), or for any purpose, without the express written permission of Microsoft Corporation. Microsoft may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this document. Except

7、 as expressly provided in any written license agreement from Microsoft, the furnishing of this document does not give you any license to these patents, trademarks, copyrights, or other intellectual property. Microsoft may have patents, patent applications, trademarks, copyrights, or other intellect

8、ual property rights covering subject matter in this document. Except as expressly provided in any written license agreement from Microsoft, the furnishing of this document does not give you any license to these patents, trademarks, copyrights, or other intellectual property. ? 2003. Microsoft Corpo

9、ration. All rights reserved. Microsoft, Active Directory, Windows, and Windows NT are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. The names of actual companies and products mentioned herein may be the trademarks of their respect

10、ive owners. 往鏈科技www.WL 往鏈科技www.WL Contents Introduction 1 Windows?Server?2003 and Windows?Storage?Server?2003: Robust Storage Solutions 2 Storage Challenges 3 The Need for Scalable Solutions 3 The Need for Fault Tolerance 4 The Nee

11、d for Protected Data 4 The Need for Manageable Solutions 5 The Need to Control Costs 5 Advantages of the Windows Storage Platform 6 New and Enhanced Storage Solutions 8 VDS for Storage Disk Management 8 VSS for Effective Data Protection 10 FRS for Remote Replication 11 DFS for File Sharing 1

12、1 ASR for Rapid Disaster Recovery 12 MPIO for Highly Available Data 14 Enhanced Support for SANs 15 Summary 16 Related Links 17 往鏈科技www.WL Introduction Data is a business’s most valuable asset. The rich media content of static and

13、dynamic web pages, huge volumes of email, 24x7 year-round demands of e-commerce, and the dependence on massive relational databases have all contributed to the explosion of mission critical data. For the system/storage administrator, managing an organization’s growing wealth of information has becom

14、e an increasingly complex, high pressure undertaking. Key to the storage administrator’s success is ensuring that information is: · Available to those who need it when they need it. · Protected from security risks, system failure or catastrophic events. · Rapidly recoverable should the need ar

15、ise. The system administrator must accomplish these tasks in the context of rapidly changing storage technologies. While there are many storage solutions available today, not all solutions scale well with organizational growth, nor are all equally capable of delivering cost-effective high performan

16、ce solutions. The new and enhanced data and storage management capabilities of Microsoft? Windows?Server?2003 and Microsoft?Windows?Storage?Server?2003 are critical tools in helping system and storage administrators do more with less. This white paper discusses the storage challenges that face bus

17、inesses today and the benefits of using the Windows Server platform to meet those needs. Windows?Server?2003 and Windows?Storage?Server?2003: Robust Storage Solutions Windows?Server?2003, Microsoft’s newest release of the Windows server operating system, is a multi-purpose server designed to ha

18、ndle a diverse set of server roles, including file and print, mail, web, terminal and directory services. The integrated storage services in Windows?Server?2003 have been enhanced and expanded to include a number of new features which help businesses control storage management costs and increase ava

19、ilability of data. Features such as the Volume Shadow Copy Service (VSS) and the Virtual Disk Service (VDS) make it easier to manage and maintain disks, helping lower total cost of ownership (TCO) especially in complex multivendor storage environments. Point-in-time imaging capability through VSS si

20、mplifies and speeds up both backups and restores. And, the Shadow Copies for Shared Folders feature of VSS enables end users to restore their own files and folders without IT intervention. High availability is enabled through multipathing and clustering. Windows?Storage?Server?2003 is a network at

21、tached storage (NAS) operating system, built upon the Windows?Server?2003 operating system. Windows?Storage?Server?2003 lets original equipment manufacturers (OEMs) build appliances optimized for file serving, since applications unnecessary to the file serving and storage tasks are not activated. St

22、orage Server NAS devices are headless (without monitor, keyboard or mouse) and can be managed through a Web-based user interface. Designed for ease of deployment and seamless integration into the existing network, Windows?Storage?Server?2003 can provide expanded storage capacity to users on the netw

23、ork in less than 15 minutes. The Storage Server NAS solution especially appropriate for organizations that do not wish to put extensive IT resources into setting up multiple file servers and managing them. Storage Challenges The storage administrator in all businesses, large or small, is faced wi

24、th a number of key problems: · Ensuring that as an organization’s data grows, storage capacity scales to accommodate it. · Ensuring that mission-critical data is well protected from the risk of hardware failure, security breeches, or disaster; and that data is available on an on-demand basis. T

25、he sections that follow explore these needs in greater detail. The Need for Scalable Solutions Embedded hard drives or directly attached external disks—referred to as DAS (directly attached storage)—is the most common way to store data on desktops, workstations and servers. The simplest solution

26、to the demand for more storage capacity is to add more hard drives, upgrade to higher capacity disks, or to purchase additional computers each with more DAS. While DAS solutions can be effective for many businesses, they are often only temporary fixes, and result in a number of challenges for the st

27、orage administrator. Decentralized Data As the number of DAS systems grows, data is increasingly dispersed throughout the company, making it difficult for users to know what resources exist and where to find them. This is an especially troublesome problem with data stored on desktops, since unles

28、s individuals allow file sharing, there is no simple means of making the data accessible to others. Even with sharing enabled, there is no effective mechanism to determine exactly where information is stored, or which version of a document is the most up-to-date. Migration of a company’s critic

29、al data to a centralized server helps the situation somewhat since the data can be readily shared across the network. But as more servers are added to increase storage capacity (and to provide redundancy in the event of hardware failure), without a mechanism to unify the presentation of directories

30、and file shares, users still have the problem of not being able to find the data that they need—or in some cases even knowing that it exists. Underutilization of Storage Resources Directly attached storage can only be accessed by the computer to which the storage is attached. Effective storage p

31、lanning requires accurate predictions about which users and applications will require more storage capacity, and those resources must be provisioned before disk capacity is exceeded. Unfortunately, directly attached storage always scales poorly over the long term. Some computers inevitably exceed th

32、eir storage capacity, while others have excess capacity but no means to effectively share those resources. Adding more servers does not eliminate the problem of inefficient utilization of storage space between servers. Storage remains local to each server; thus space may be available on one server

33、 but capacity exceeded on another. Anticipating growth and implementing storage solutions that scale with growth remains a problem. Proliferation of Storage Equipment Adding servers to meet the need for greater storage capacity is an effective solution as long as the number of servers an administ

34、rator can handle remains manageable. Servers must be maintained, backed up and serviced, all of which rapidly becomes a management headache for the system administrator. And as long as storage remains directly attached to the server, each server must have its own directly attached tape drive for bac

35、kups; a very costly solution for equipment that is only in use during the backup and restore process. Ensuring Compatibility with Storage Networking Solutions The best storage solutions not only meet today’s storage needs, they also scale well with more advanced storage solutions, such as network

36、 attached storage (NAS) and storage area networks (SANs). The Need for Fault Tolerance More and more businesses rely on making their services and information available for access 24x7 year round. Failure in any of a number of hardware components—storage devices, storage interconnects, cabling, ne

37、twork interconnects, processors, motherboards and power supplies—can result in a temporary or permanent loss of data. Fault tolerance can be achieved through redundancy of hardware components, and is one means by which to ensure highly available data. Redundant Disks Externally attached storage

38、devices can be made highly redundant using RAID (redundant array of inexpensive disks) subsystems. Redundancy can be achieved in a number of different ways, including mirroring, which replicates the data on one disk to one or more additional disks. Should one disk fail, the system can “failover” to

39、a second disk with the replicated data. Redundant Hardware through Clustering A cluster is two or more computer systems that act and are managed as one. Clustering allows applications to remain online, even if a server goes down. Users are redirected to another computer without any loss of servi

40、ces. The Need for Protected Data System administrators must protect data not only from hardware failure, but also from data corruption, user error, and disasters. The most common means of protecting data from these problems is through tape backups and restores. Unfortunately, this solution provid

41、es only partial protection. Poor Protection of Desktops and Laptops Directly attached storage must be backed up by the individual user. However, users are rarely effective in performing regular backups, and for that reason, system administrators strongly advocate storing documents and data that i

42、s critical to the company on the server, where it can be properly backed up. Open File Backup Constraints While management of backups can be simplified using a centralized backup server, the time required to perform backups conflicts with the demand for continuously available data. Trying to back

43、 up an open file can result in data corruption. As a consequence, those files must either be skipped (meaning that the backup is incomplete) or users must close their applications during backups. Preventing data corruption during the backup process has meant that the backup period must be restricted

44、 to when users are not trying to access their files across the network—typically just evenings and weekends. As organizations produce more and more data that must be backed up, the time it takes to backup data can exceed the nightly or even weekend backup times. The Need for Manageable Solutions

45、System administration can become enormously complex, especially in midsize and large organizations. Administrators are responsible for managing web, application and database servers and for clustering those servers to ensure effective performance and high availability. They are also responsible for

46、managing dedicated storage networks (SANs) that host multi-vendor storage devices, each with a vendor specific disk management application. These management consoles are not standardized, making training and usage unnecessarily complex. Administrators are responsible for managing utilities for such

47、tasks as backup, data mining and testing. Since applications are not storage-aware, managing data for backup and transport can be a complex and inefficient process. Finally, although many organizations require multiple platforms to support various applications, there are increasing demands that data

48、 be shared among users irrespective of whether they use Windows, Unix or some other operating system. The Need to Control Costs Organizations are demanding that system administrators deliver robust, reliable and scalable storage solutions within a budget that remains flat or has declined. Among

49、 the most effective ways to control costs and still deliver effective storage solutions is to consolidate resources. Network attached storage solutions provide a cost effective means to add storage capacity while consolidating equipment. As many as 10-25 file servers can be consolidated into a singl

50、e NAS device, depending on the amount of data consolidated. Not only does this mean that equipment and licensing costs are curtailed, it also enables the consolidation of related equipment such as backup devices and the reduction in management overhead. Solutions that automate or speed up storage

51、provisioning, backups and general maintenance all decrease the need for administrator interventions, saving the administrator time and effort. These costs can be directly passed on to the business, lowering total cost of ownership and ensuring the most effective utilization of existing storage resou

52、rces. Advantages of the Windows Storage Platform Both Windows?Server?2003 and Windows?Storage?Server?2003 provide businesses with reliable storage solutions that are designed to keep data protected, highly available, and easily managed—without huge capital expenditures. Windows?Server?2003 and

53、Windows?Storage?Server?2003 help businesses to reduce their total cost of ownership by: · Lowering IT Intervention Costs. The accidental deletion or overwriting of files has long the bane of system administrators charged with the time intensive and costly task of locating and restoring single file

54、s from tape. The Shadow Copy for Shared Folders feature of the new Volume Shadow Copy Service (VSS) enables users to easily restore their own deleted files, without IT intervention. · Managing Backups and Restores More Effectively. As organizations produce more information, backing up data becomes

55、an increasingly time intensive and potentially disruptive operation. Tape backups have the additional drawback that it is only during the restore process that data corruption becomes apparent—making data recovery impossible. With the new Volume Shadow Copy Service (VSS), open file backups are enable

56、d, thus making unnecessary the disruptive practice of shutting down applications during backup to prevent data consistency issues. The process of creating shadow copies is designed to ensure data integrity prior to the tape backup process, thus ensuring that the data is complete, uncorrupted and abl

57、e to be restored. In the case of catastrophic system failures—cases where the hard drive looses all operating system information and is effectively stripped down to the bare metal—Automated System Recovery makes possible rapid restore of the system’s original state. · Increasing Availability a

58、nd Security of Data. Making data highly available throughout an organization requires data redundancy. The Volume Shadow Copy Service allows administrators to schedule making regular copies of data stored on disk, and makes it painless for users to access consistent point-in-time copies of data. Mor

59、eover, since only the changes to the data are saved This is true when using shadow copy capabilities through the operating system. Hardware provider solutions may be different. , Shadow Copies take up very little disk space, enabling companies to make copies of whatever data is needed. The File

60、Replication Service controls replication and synchronization of data. This data can be made highly available to remote sites using the Distributed File System. · Managing Multi-Vendor Storage More Effectively. Multi-vendor storage device management has required that the system administrator manage

61、 each device independently—and use a different vendor supplied interface to do so, thus adding another layer of complexity to the system administrator’s job. With the introduction of the new Virtual Disk Service (VDS), the system administrator can use a single interface to configure storage from mul

62、tiple vendors. (This solution is fully implemented in partnership with the storage hardware vendors.) Hardware vendors create the hardware provider (the component that controls the storage device), and use the VDS application programming interfaces (APIs) to provide hardware specific VDS functional

63、ity. · Increasing the Effectiveness of File Sharing. The Distributed File System (DFS) helps to make the end user’s process of locating and accessing files distributed across an organization effortless. With the Windows?Server?2003 release, DFS has been enhanced to allow for multiple DFS root

64、 directories on each server. This capability means that it is no longer necessary to add an additional server for each additional DFS root directory. DFS also offers closest site selection, ensuring access to the nearest available copy of the data at the lowest cost. · Leveraging Existing Network I

65、nfrastructure for SAN Storage. Windows support for iSCSI technology allows users to connect computers to consolidated storage devices using existing Ethernet technologies, rather than having to install a separate Fibre Channel network. Microsoft’s enabling of this technology will help bring the adva

66、ntages of storage area networking (SAN) to midsize and small businesses that otherwise could not afford the extra cost and management of running a separate Fibre Channel network. SAN technology based on IP also removes the physical limitations of moving data further than the current 10 km limit imposed by Fibre Channel technology. In addition to enabling less expensive SAN solutions, the Windows storage platform now provides better support for SANs. Administ