none
Use of Single Instance Store (SIS) in DPM 2012 R2 RRS feed

  • Question

  • Hi,

    Please help me to understand use of installing Single Instance Store (SIS) feature while installation of DPM 2012 R2 or reason behind installing it.

    Saturday, March 8, 2014 2:20 PM

Answers

  • Thnaks Eugene for reply.

    I am aware about SIS technology but want to understand whether it is getting applied in case of taking backup on disk\tape using DPM or not.

    As per below comments in below link, DPM does not utilize SIS.

    http://social.technet.microsoft.com/Forums/en-US/91d259a8-293d-4837-83c0-5a545888ec4e/data-protection-manager-2012-single-instance-storage

    So please clear.

    Yes, DPM does not utilize SIS.
    "You cannot enable SIS on any of the DPM volumes, however if DPM protects a  Storage server volume that has SIS enabled, then DPM will protected it in a SIS enabled state so the storage savings can be realized. "

    http://social.technet.microsoft.com/Forums/en-US/94d58af2-4f1b-46f3-8ad8-928917abb3ac/dpm-2012-and-the-real-single-instance-storage?forum=dataprotectionmanager

    "DPM does not use SIS to conserve space in the storage pool when running SIS-Limited, so there is no de-dup by SIS on your DPM storage pool in this setup.

    However there is a way to run a full SIS deployment on DPM, this is by installing DPM on top of Windows Storage Server. If you install DPM on a Windows Storage Server you’ll be able to use SIS for all data you store in your storage pool."

    Clarification of SIS-Limited on DPM


    Have a nice day !!!

    • Marked as answer by Parag_M Thursday, March 13, 2014 3:56 PM
    Thursday, March 13, 2014 5:22 AM

All replies

  • DPM is using Single Instance Storage (SIS) for optimizing storage space.

    Single-instance store, or SIS, is an architecture designed to maintain duplicate files with a minimum of disk, cache, and backup media overhead. Single-instance store backup, or SIS backup, is  an API that  backup applications call to access the SIS architecture.

    http://msdn.microsoft.com/en-us/library/windows/desktop/aa362538(v=vs.85).aspx

     Single Instance Store (SIS) service to reduce the storage overhead of storing duplicate files.

    Single Instance Store

    Before you install DPM on your server, it is important to install a technology called Single Instance Store (SIS). SIS will ensure you get the maximum performance out of your disk space and reduce bandwidth needs on DPM.

    SIS is a technology that keeps the overhead of handling duplicate files low. This is often referred to as de-duplication. SIS is used to eliminate data duplication by storing only one copy of files on backup storage media. SIS is used in storage, mail, and backup solutions such as DPM. SIS helps to lower the costs of bandwidth when copying data across a network as well as needed storage space.

    Microsoft has used a single installation store in Exchange since version 4.0. SIS searches a hard disk and identifies duplicate files. SIS then saves only one copy of the files to a central location such as a DPM storage pool. SIS will then replace other copies of the files with pointers that direct you to the copy of the files the SIS repository already has stored.

    http://www.buchatech.com/2011/06/installing-data-protection-manager-2010-2/


    Have a nice day !!!

    Sunday, March 9, 2014 9:47 PM
  • Thnaks Eugene for reply.

    I am aware about SIS technology but want to understand whether it is getting applied in case of taking backup on disk\tape using DPM or not.

    As per below comments in below link, DPM does not utilize SIS.

    http://social.technet.microsoft.com/Forums/en-US/91d259a8-293d-4837-83c0-5a545888ec4e/data-protection-manager-2012-single-instance-storage

    So please clear.

    Tuesday, March 11, 2014 11:48 AM
  • DPM is SIS-aware, which means that DPM can protect SIS-enabled volumes of the Windows Storage Server, which is why the SIS component is installed during the DPM server installation.

    DPM cannot leverage SIS by itself to achieve a deduplicated DPM disk pool. If your goal is to have a deduplicated DPM disk pool you can use hardware deduplication of the SAN that stores the DPM disk pool or you can use third-party software such as BitWackr.


    Please VOTE as HELPFUL if the post helps you and remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

    Thursday, March 13, 2014 5:00 AM
  • Thnaks Eugene for reply.

    I am aware about SIS technology but want to understand whether it is getting applied in case of taking backup on disk\tape using DPM or not.

    As per below comments in below link, DPM does not utilize SIS.

    http://social.technet.microsoft.com/Forums/en-US/91d259a8-293d-4837-83c0-5a545888ec4e/data-protection-manager-2012-single-instance-storage

    So please clear.

    Yes, DPM does not utilize SIS.
    "You cannot enable SIS on any of the DPM volumes, however if DPM protects a  Storage server volume that has SIS enabled, then DPM will protected it in a SIS enabled state so the storage savings can be realized. "

    http://social.technet.microsoft.com/Forums/en-US/94d58af2-4f1b-46f3-8ad8-928917abb3ac/dpm-2012-and-the-real-single-instance-storage?forum=dataprotectionmanager

    "DPM does not use SIS to conserve space in the storage pool when running SIS-Limited, so there is no de-dup by SIS on your DPM storage pool in this setup.

    However there is a way to run a full SIS deployment on DPM, this is by installing DPM on top of Windows Storage Server. If you install DPM on a Windows Storage Server you’ll be able to use SIS for all data you store in your storage pool."

    Clarification of SIS-Limited on DPM


    Have a nice day !!!

    • Marked as answer by Parag_M Thursday, March 13, 2014 3:56 PM
    Thursday, March 13, 2014 5:22 AM
  • Thank you so much Eugene for clarification.

    Thursday, March 13, 2014 3:56 PM