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Space Increasing in Production? How it is calculated?

 
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ramu_mohan21
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Joined: 29 Jun 2004
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Location: Bangalore, INDIA

PostPosted: Tue Nov 23, 2004 8:52 am    Post subject: Space Increasing in Production? How it is calculated? Reply with quote

Hi Board,
We are increasing space allocation for the Datasets in production due to huge volume of data is going to come.
We have got the requirements like below
If (CYL,(200,50),RLSE)(Old Allocation)
Add New Volume of 65+ --------> (CYL,(350,75),RLSE).

Anyone can tell on How this space have been calculated?
I mean how this 65+ have been utilized to get the (CYL,(350,75),RLSE).
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Rammohan Pabba
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kolusu
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Joined: 26 Nov 2002
Posts: 12380
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Location: San Jose

PostPosted: Tue Nov 23, 2004 9:11 am    Post subject: Reply with quote

Ramu_mohan21,

I am not sure what you mean by 65+ in here , but the total space allocated for a reqular sequential dataset is calculated as follows

Code:

 Total space allocated = primary space qty + (15 * secondary space qty)


So in your old allocation it would be a total of 950 cylinders (200+(15*50) = 950)

With new allocation it would be 1475 cylinders(350+(15*75) = 1475)

Check this link for a detailed explanation of calculating space based on LRECL and Volume of data

http://www.mvsforums.com/helpboards/viewtopic.php?t=28&highlight=space

Hope this helps...

Cheers

kolusu
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ramu_mohan21
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Joined: 29 Jun 2004
Posts: 106
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Location: Bangalore, INDIA

PostPosted: Tue Nov 23, 2004 9:42 am    Post subject: Reply with quote

Hi Kolusu,
Thank you very much for clarifying my doubt.
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Rammohan Pabba
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mfjin
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PostPosted: Tue Nov 23, 2004 10:37 am    Post subject: Reply with quote

Ramu,

R u sure your doubts been clarified. I didnt get the 65+ thing and didnt
understand how kolusus link clarified it. Can you pls explan?
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ramu_mohan21
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PostPosted: Fri Nov 26, 2004 12:00 am    Post subject: Reply with quote

HI Mfjin,
I have got information from our onsite counter part is 65+ is related to more than 65000 records per day. Previously we use the get less than 65000 records. Hence the previous space was sufficient. Here I have got information from Kolusu's reply how to calculate space. It is relevent to me. Hence my doubt is clarified.
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vak255
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PostPosted: Mon Nov 29, 2004 5:00 am    Post subject: Can you tell me whats the LRECL of ure records. Reply with quote

Hi ram,
Can you tell me whats the LRECL of ure records.would u pls explain how the
Quote:
65+ is related to more than 65000 records per day. Previously we use the get less than 65000 records

why you gone for increase in space from 950 to 1475 cylinders. Question [/code]
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