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34 Posts
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4272
April 14th, 2011 14:00
Calculating the Index size of a Client
Hello
I have a NW 7.6 SP1 and I want to know the index size in a client with 50 GB with 475,000 files and a full each Monday, this because I was assigned only 100GB disk for CFI
Regards
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ecarter11
2 Intern
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177 Posts
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April 15th, 2011 12:00
Allan - u r a funny one...!
To add a bit of color from what I know about Allan's stated formula:
- The 160 in the formula is based on a rough assumption of 160 bytes per catalog entry
- The 1.5 is a multiplier for growth/errors which may increase the catalog size (sort of a fudge factor)
I tried my hand at your # of files w/ a 5% data change and a total of 4 of the full cycles maintained (your stats may be completely different on daily change and retention) - but what I'm getting is about 152 MB.
Would be interesting to see what you come out with. Let us know!
-Eric
AllanW1
334 Posts
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April 15th, 2011 12:00
hmmm.. How does that work again. parenthesis, multiplication, exponents..no, no.. its Please Excuse My Dear Aunt Sally..
Here's the formula you can use to calculate the NetWorker catalog (index) size:
n = number of files to backup
d = days in cycle (time between full backups)
i = incremental data change (i=n * (% data change as a decimal))
c = number of cycles online
CATALOG SIZE = (n+(i*d))*c*160*1.5
Hope this helps.
Allan
vorosz
25 Posts
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August 31st, 2011 04:00
Hello,
If it is true, than what is the right answer for this:
I am prepearing for e20-329 exam...
Consider the following NetWorker environment:
According to EMC best practices, approximately how much disk space should the catalog files take in this environment?
Possible answers are 240GB, 500GB, 1TB, 2TB
My result was cirka 700 MB.....
Zoltan