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Space required for EHP7 upgrade

Hi All,

we have a proposal for EHP7 upgrade. while reading the master guide, I have seen the below table in it. I Couldn't understand the space requirement for shadow instance at file system, Requesting you all can advise me from your previous experience.

Regards,
Damdoar Sallarm

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3 Answers

  • Posted on Apr 24, 2016 at 01:10 PM

    Hi,

    Shadow System resides inside SUM directory itself, So you have now:

    /usr/sap/<sid>/SUM ------> SUM Directory

    Space required for this : 20 GB (Base requirement) + Size of atleast "/usr/sap/<sid>" i.e. the Main instance for shadow.

    As a rough estimation for SUM Directory, I take atleast 50 GB for SPS Updates and 80 GB for release upgrades.

    Apart from this, All SP updates, Patches, DVDs that you need based on the upgrade goes into the download directory --- It is the size of your downloads from service marketplace itself so easy to see.

    and /usr/sap/trans (DIR_TRANS) --- Atleast 20 GB free. (According to my experience make the free space more than the size of downloads. Guide mentions 20 GB as they have estimated the size of downloads the same too.

    Warm Regards,

    Ajay Kalra

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    • Hi Damodar,

      The above space requirement is for the Filesystem part -- The space needed for logs, Shadow profiles, and executables etc. on FS level only.

      For DB level, the SUM shall evaluate the tablespace layout/DB size and let you know during the checks phase if you shall need to create new tablespace using DB tools with appropriate sizes. DB level requirements are seperate from the FS level requirements. Also, if using nZDM (Near zero downtime), additional DB free space requirements are there that should be referred from the guide.

      Warm Regards,

      Ajay Kalra

  • author's profile photo Former Member
    Former Member
    Posted on Apr 26, 2016 at 10:27 AM

    Hi Subham/Ajay,

    Thanks for your valuable inputs. I will get back if there are any quires on it. 😊

    Regards,
    Damodar

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  • Posted on Apr 26, 2016 at 11:53 AM

    The SUM directory is the one which will host the shadow instance as well. There should be enough space in the SUM directory for the shadow instance files like kernel, traces/logs, profiles along with the tool. The transport file-system should contain enough space to extract the patches/archives required for the EHP7 update. The downloads directory space is based on the amount of files downloaded for the EHP7 update.

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