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DPM TAPE LABEL AND ITS WORKING RRS feed

  • Question

  • Hi,

    I have few queries on DPM tape labels.

    1. What is the advantage of mentioning tape label.

    2. Is it possible to create two or three protection groups for the same tape label.

    3. Media label says fileserver but the tape content is showing it has exchange & Sql backed up data along with file server. does this means that other protection group data is also available here.

    4. Any other protection group data will accommodate in the same media or it will refer to the Label provided in the protection group.

     

    Thursday, November 24, 2011 10:06 AM

Answers

  • Hi,

    Answering your questions inline.

    Q1. What is the advantage of mentioning tape label.
    A2. Tape labels are written on the media in the tape header and are just a friendly label.  They can be customized when going through the protection group wizard.  By default, the tape label name is "Protection group name- sequence number".

    Q2. Is it possible to create two or three protection groups for the same tape label.
    A2.  Yes, and in fact, if you have co-location enabled, it would be best to use a more generic label name in all PG's that have the same recovery goals. That way it doesn't matter which protection group writes to the tape tape first and it will always get the same custom tape label.

    Q3. Media label says fileserver but the tape content is showing it has exchange & Sql backed up data along with file server. does this means that other protection group data is also available here.
    A3. Yes, this means you have enabled tape co-location and all PG's that have the same retention goals will share the tape.  This is why I suggested a more generic tape label in all PG's that have the same goals.

    Q4. Any other protection group data will accommodate in the same media or it will refer to the Label provided in the protection group.
    A4. The first time a data source in a protection group needs a new tape for a backup, it will grap a free (or expired tape) and DPM will label the tape according the the default or custom label specified for that PG.

    Q5. Co-location of data on tape is enabled..does it mean all protection groups data will store in a single tape.
    A5.  Potentially yes, but only protection groups that share the same recovery goals.

    See the following restrictions:  http://technet.microsoft.com/en-us/library/ff399155.aspx

     


    Regards, Mike J. [MSFT] This posting is provided "AS IS" with no warranties, and confers no rights.
    Sunday, November 27, 2011 4:20 PM
    Moderator

All replies

  • Hi,

    Co-location of data on tape is enabled..does it mean all protection groups data will store in a single tape.

    Thursday, November 24, 2011 11:48 AM
  • Hi,

    Answering your questions inline.

    Q1. What is the advantage of mentioning tape label.
    A2. Tape labels are written on the media in the tape header and are just a friendly label.  They can be customized when going through the protection group wizard.  By default, the tape label name is "Protection group name- sequence number".

    Q2. Is it possible to create two or three protection groups for the same tape label.
    A2.  Yes, and in fact, if you have co-location enabled, it would be best to use a more generic label name in all PG's that have the same recovery goals. That way it doesn't matter which protection group writes to the tape tape first and it will always get the same custom tape label.

    Q3. Media label says fileserver but the tape content is showing it has exchange & Sql backed up data along with file server. does this means that other protection group data is also available here.
    A3. Yes, this means you have enabled tape co-location and all PG's that have the same retention goals will share the tape.  This is why I suggested a more generic tape label in all PG's that have the same goals.

    Q4. Any other protection group data will accommodate in the same media or it will refer to the Label provided in the protection group.
    A4. The first time a data source in a protection group needs a new tape for a backup, it will grap a free (or expired tape) and DPM will label the tape according the the default or custom label specified for that PG.

    Q5. Co-location of data on tape is enabled..does it mean all protection groups data will store in a single tape.
    A5.  Potentially yes, but only protection groups that share the same recovery goals.

    See the following restrictions:  http://technet.microsoft.com/en-us/library/ff399155.aspx

     


    Regards, Mike J. [MSFT] This posting is provided "AS IS" with no warranties, and confers no rights.
    Sunday, November 27, 2011 4:20 PM
    Moderator