Engineering Requirements Management

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  • 1.  IBM ELM DOORS database backup strategy using Tivoli Storage Manager?

    InnerCircle
    Posted Thu March 04, 2021 06:54 AM
    Hi, all,

    A customer would like to use Tivoli Storage Manager (TSM) to backup DOORS database and, more specifically, the TSM Journal Based Backup feature to be able to speed up the backup process. Is there anybody using that combination that could please share best practices and/or alternatively why not use it?

    Thanks and kind regards,
    Oskar

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    Oskar Berreteaga
    Systems Engineering and Software Manager
    ULMA Embedded Solutions
    Oñati
    34943250300
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  • 2.  RE: IBM ELM DOORS database backup strategy using Tivoli Storage Manager?

    Posted Wed March 10, 2021 03:47 PM
    We've never heard of a customer using that solution to backup their DOORS data. We'd say as long as they take the backup of the data when the DOORS server is down it should be fine.

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    Brian Sanders
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  • 3.  RE: IBM ELM DOORS database backup strategy using Tivoli Storage Manager?

    Posted Mon April 26, 2021 10:16 AM
    Hi Oskar, I've never used this kind of backup. Starting from a sentence in the TSM technote, "Journal Based Backup is considered a viable solution for environments in which the amount of file system activity is light to moderate, and that the activity is somewhat well distributed. Running applications which touch every file (or a very large percentage of files) on the file system, or which flood the file system with changes in a very short period of time (such as copying a very large directory tree) may make journaling unusable.", I think that this system could be not the appropriate one for DOORS. DOORS has a lot of small files and if a large amount of users are modifying the formal modules this could create the "unusable" condition fot TSM. Typically, my customers stop the DB server and then copy the files using an incremental backup. Hope this helps.
    Gianluca.

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    Gianluca Monticone
    Senior System Specialist
    IBM Italia S.p.A.
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  • 4.  RE: IBM ELM DOORS database backup strategy using Tivoli Storage Manager?

    InnerCircle
    Posted Tue April 27, 2021 02:35 AM
    Hi Gianluca,

    Thanks for your reply. I will let my customer know. I have also seen full VM backup operations when having little time to copy the DB folder but it's the first time we come across TSM. I agree it doesn't look like a good match.

    Kind regards,
    Oskar

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    Oskar Berreteaga
    Systems Engineering and Software Manager
    ULMA Embedded Solutions
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