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Archives of the TeradataForum
Message Posted: Tue, 07 Mar 2006 @ 12:24:05 GMT
| Subj: | | Re: Disk Space overhead? |
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| From: | | Victor Sokovin |
Daniel,
| | The Disk Capacity (free and used) seen by the database (MAXPERM) can be calculated approximately as total spinning disk less raid overhead
and file system formatting overhead: | |
| | Spinning Disk Space Capacity * Raid Configuration (i.e R1 = 0.5; R5/RS = 0.75) * 0.915 (File System OS Overhead Factor) | |
| | This formula is approximate as the File System OS Overhead Factor varies dependent on the detailed configuration but is approximately
8.5%. | |
If you have time to look at the figures on
www.teradatalibrary.com/pdf/pricing.pdf,
could you please comment on them? I guess they include the mirrored drives.
What are the factors then?
Regards,
Victor
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