https://communities.sas.com/t5/SAS-Procedures/SAS-SPDS-dataset-vs-normal-BASE-SAS-Dataset/m-p/24255#M5474 I think there is a algorithm for calculating SPDS disk space. I would say that SPDS tables require a bit more, but generally not more than 10%.<BR /> If you chose to have BACKUP=YES an additional 18 bytes will be added to each record, and if you have a lot of tables with a short record length, that would probably build your tables more than 10%.<BR /> But this has never been an issue in the projects I've been participated.<BR /> /Linus Wed, 02 Dec 2009 07:43:59 GMT LinusH 2009-12-02T07:43:59Z https://communities.sas.com/t5/SAS-Procedures/SAS-SPDS-dataset-vs-normal-BASE-SAS-Dataset/m-p/24254#M5473 Hi,<BR /> <BR /> I well know that SPDS dataset has lot of performance and scalibilty advantages as compared to normal BASE SAS datasets.<BR /> <BR /> Please let me know your views which datasets occupies more space SPDS dataset or normal base SAS dataset and why? Please do share the pointers of its details? Message was edited by: Deepu Wed, 02 Dec 2009 05:26:08 GMT https://communities.sas.com/t5/SAS-Procedures/SAS-SPDS-dataset-vs-normal-BASE-SAS-Dataset/m-p/24254#M5473 deleted_user 2009-12-02T05:26:08Z https://communities.sas.com/t5/SAS-Procedures/SAS-SPDS-dataset-vs-normal-BASE-SAS-Dataset/m-p/24255#M5474 I think there is a algorithm for calculating SPDS disk space. I would say that SPDS tables require a bit more, but generally not more than 10%.<BR /> If you chose to have BACKUP=YES an additional 18 bytes will be added to each record, and if you have a lot of tables with a short record length, that would probably build your tables more than 10%.<BR /> But this has never been an issue in the projects I've been participated.<BR /> /Linus Wed, 02 Dec 2009 07:43:59 GMT https://communities.sas.com/t5/SAS-Procedures/SAS-SPDS-dataset-vs-normal-BASE-SAS-Dataset/m-p/24255#M5474 LinusH 2009-12-02T07:43:59Z