## How to calculate Anaplan model size?

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Master Anaplanner/Community Boss

## Re: How to calculate Anaplan model size?

@Damian_Broj  My client has a requirement to track model size and some other KPI's on daily bases. I have an Anaplan model which keeps track of all other model cell counts on daily bases . I have tried it couple of ways on 8 models across multiple workspaces

1 - Using the suggested method i.e get each line item cell count and data type and get the bytes and convert to GBs

Result :- 7 out of 8 models are way off with GB's displayed on Anaplan . Only 1 model comes very close .

2- Using the approximation method . I.e 1000000000 cells = 9.3 GB

Result :- 7 out of 8 models are very close only one 1 model is way off . Interestingly 1 that is off is the one which works with approach 1

May be i need to convince my client to analyse model size on cell counts rather than Gb's since there is no way to find the gap cell/space which comes from line items within Anaplan

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Master Anaplanner/Community Boss

## Re: How to calculate Anaplan model size?

As we’ve said previously, you can’t use cells to Gb. That does not account for the Gb that lists and their subsets take up.
I’ve been sizing a few models recently and when I use 500b per list item I’m only slightly off. I found that if I used 93% of the 500b for the lists, I was spot on. That worked for a 52gb model just as for a 2gb model
David
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Master Anaplanner/Community Boss

## Re: How to calculate Anaplan model size?

@DavidSmith i get that but cells ->bytes -> GB's does not give me what Anaplan shows as model size . For it to work i have to do some approximation as you highlighted above . So if both methods are approximation i am getting better results with second one with much easier calculations.

Perhaps we can have a way to show exact results size by items in Anaplan to take the guess work out of it altogether one day . This might be handy especially considering clients pay by space for Anaplan .
Highlighted
Master Anaplanner/Community Boss

## Re: How to calculate Anaplan model size?

I'm not sure if this will help, but I've attached the sizing spreadsheet I use.  As I mentioned, this is pretty accurate.

I tend to use the "error" % to get the totals correct to what is shown in the model, and then use the increase row tot flex the sizing for what-ifs.  Certainly, that is pretty close to what I actually see when the lists are increased.

Also, the "error" was pretty consistent initially for different sized models

I hope that helps

David

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Occasional Contributor

## Re: How to calculate Anaplan model size?

@DavidSmith  in your model calculator, you don't account for time in your calculations.  Example scenario:

• Customers = 21000
• Sales People = 307
• Product Types = 9
• Line item (numeric) = 1

give 58,023,000

If I put those in a module to track sales by customer, sales person and product type by day and the model has two years doesn't this result in:

58,023,000 * 365 * 2 = 42,356,790,000 cell * 0.000000009313 = 394.5 GB

Highlighted
Community Boss

## Re: How to calculate Anaplan model size?

Yes, Time should be part of it and if your timescale is daily then your model size will be more than 315GB.

However you are not adding the size that list items take up i.e., (21000*500 Bytes) + (307*500 Bytes) + (9*500) - It won't add up that much but it definitely is one of the reasons that your model size grow when your lists grow

58,023,000 *365*2 *8 =

 338,854,320,000

which is roughly equal to 316 GB

Thanks,

Misbah

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Master Anaplanner/Community Boss

## Re: How to calculate Anaplan model size?

The example I attached was from a model without time or versions in it.

The principle still applies, for modules, you need to cell count * line item format

There will always be a small correction error, as per my spreadsheet.

What I was highlighting is the impact large lists have; one should not forget those in the estimations

David

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Occasional Contributor

Thanks David.