If the average file size is about 10 kb about 100000

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If the average file size is about 10 KB, about 100,000 files are incache at any one time.100,000 files x 200 bytes = 19MBCopy storage pool filesAll primary storage pools are backed up to the copy storage pool:(1,500,000 + 100,000 + 200,000) x 200 bytes = 343MBActive-data pool filesAll the active client-backup data in primary storage pools is copiedto the active-data pool. Assume that 500,000 versions of the1 500 000 backup files in the primary storage pool are active.500,000 x 200 bytes = 95 MBDeduplicated filesAssume that a deduplicated storage pool contains 50,000 files.50,000 x 200 bytes = 10 MBTherefore, cached files, copy storage pool files, and active-data pool files,and deduplicated storage pool files require about an additional 0.5 GB ofdatabase space.OverheadAbout 2.3 GB is required for file versions, cached copies, copy storage poolfiles, and active-data pool files. Allow up to 50% additional space (or 1.2GB) for overhead.The database should then have at least 3.5 GB per client.During SQL queries of the server, intermediate results are stored in temporarytables that require space in the free portion of the database. Therefore, using SQLqueries requires additional database space. The more complicated the queries, thegreater the space that is required.Tip:vIn the preceding examples, the results are estimates. The actual size of thedatabase might differ from the estimate because of factors such as the number ofdirectories and the length of the path and file names. As a best practice,periodically monitor your database and adjust its size as necessary.vIf you cannot estimate the numbers of files, you can roughly estimate thedatabase size as from 1% to 5% of the required server storage space. Forexample, if you need 100 GB of server storage, your database should be 1 - 5GB.Chapter 1. Planning to install the IBM Tivoli Storage Manager server7
Recovery log space requirementsThe recovery log space that you require depends on the amount of client activitywith the server.Active log spaceEnsuring that the recovery log has enough space is essential for a V6.2 server.The default size of the active log is 16,384 MB (16 GB). Under normal serveroperations, you are likely to need an active log that is larger than the default. Themaximum size of the active log is 131,072 MB (128 GB). The minimum size of theactive log is 2048 MB (2 GB).When estimating the size of the active log, ensure that the active log is largeenough to handle not only the amount of concurrent activity that the servertypically handles, but also higher workloads that can occur occasionally or underunusual conditions. Try to anticipate the greatest amount of workload that theserver might need to handle.For simple backup and archive activity with no data deduplication, 20 GB for theactive log is adequate. If you use data deduplication, and if you deduplicate largeobjects (for example, image backups), use an active log size that is 20% of thedatabase size.

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