Hi, Very often SAP HANA admins use the data compression to save memory. if so deduplication efficiency should fall. Efim
> 7 сент. 2016 г., в 11:20, Martin Janosik <martin.jano...@cz.ibm.com> > написал(а): > > Hello all, > > is anyone storing SAP HANA backups (using Data Protection for ERP) in > directory storage pools? > What are deduplication savings in your environment? > > In our environment we see only 40% savings (35%-50%), comparing to > predicted dedup savings 1:9 (this ratio is currently valid for backups of > TDP4ERP Oracle, MS SQL, Oracle, ...). > This completely messes up the initial capacity planning :( > > tsm: PRYTSM1>q dedupstats DEDUPPOOL_REPL SAP_PEP f=d > > Date/Time: 09/02/2016 21:01:00 > Storage Pool Name: DEDUPPOOL_REPL > Node Name: SAP_PEP > Filespace Name: /tdpmux > FSID: 2 > Type: Arch > Total Data Protected (MB): 27,045,165 > Total Space Used (MB): 16,228,576 > Total Space Saved (MB): 10,816,588 > Total Saving Percentage: 39.99 > Deduplication Savings: 1,699,912,761,679 > Deduplication Percentage: 5.99 > Non-Deduplicated Extent Count: 8,414 > Non-Deduplicated Extent Space Used: 3,329,503 > Unique Extent Count: 15,846,440 > Unique Extent Space Used: 26,082,116,838,846 > Shared Extent Count: 7,340,821 > Shared Extent Data Protected: 2,276,790,425,670 > Shared Extent Space Used: 574,756,400,378 > Compression Savings: 9,642,102,240,318 > Compression Percentage: 36.17 > Compressed Extent Count: 21,757,839 > Uncompressed Extent count: 1,437,836 > > Thank you in advance. > > Kind regards > Martin Janosik
