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  • Blog Post: Using SIS on Server Clusters

    We’ve had great response to our SIS series. Thanks to everyone who commented or sent questions. One very good question was related to server clusters: “Is SIS available on clustered volumes? If so how is it enabled?” Yes, SIS can be installed on clustered servers running Windows Storage Server 2003 R2...
  • Blog Post: Some praise for Windows Storage Server 2003

    Tony Asaro at ComputerWorld praises two features of Windows Storage Server, SIS and search. Check out his blog entry at http://www.computerworld.com/blogs/node/1800 .
  • Blog Post: The SIS Common Store and Common-Store Files (Part 3)

    What you’ve been waiting for—part 3 of our 4-part SIS series: All backing files maintained by SIS are called common-store files. One common store exists on each SIS-maintained volume and contains all of the common-store files that exist on that volume. This directory is located in the root directory...
  • Blog Post: SIS Design (Part 2)

    Welcome back to our series of SIS-related posts. We've already started receiving questions about SIS via email. If you have questions, please post them as comments here so that all readers will see our responses. SIS Design SIS uses a file system filter driver (Sis.sys) that can replace duplicate...
  • Blog Post: New Single Instance Store whitepaper available

    Looking for additional SIS info? Check out this SIS Whitepaper . This white paper describes the basic architecture of the Single Instance Storage (SIS) feature of the Microsoft® Windows® Storage Server 2003 R2 operating system. This feature helps organizations reduce storage needs for file servers by...
  • Blog Post: Backup and Restore Support for SIS (Part 4)

    Here’s the final installment of our 4-part SIS series: Because SIS creates reparse points from identical files, backup programs must understand this capability of the NTFS file system in order to efficiently backup and restore these files. SIS includes the Sisbkup.dll module to support backup/restore...
  • Blog Post: Additional SIS questions

    We’ve had several more SIS questions come in. Here they are, along with their answers: How does SIS work with quotas? If a file is SIS linked after applying a quota, then only the size of the reparse point of that file is counted towards the quota. If a file is SIS linked before applying a quota...