4.2.3 Estimating the size of the archive directory
The following shows the calculation formula for estimating the size of the archive files that will be stored in the archive directory. The estimated value will be the total size of the archive directory.
Use the following calculation formula if you define an archivable multi-chunk table and use the adbarchivechunk command to archive the data in the chunk.
Formula (gigabytes)
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![[Figure]](GRAPHICS/F0000127.GIF)
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The compression rate of archived data differs depending on the data stored in the archivable multi-chunk table. Therefore, more capacity than estimated by using the formula might be required.
Explanation of the variables
- archive_chunk_num
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The number of chunks to be archived
- archive_chunk_data(i)
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The size of the original data that is stored in the i-th chunk to be archived (gigabytes)