A company has two SharePoint 2007 site collections that each store 200,000 unique documents. The average
size of each document is 250 KB. There are two non-current versions for each document.
There are approximately 600,000 list items in addition to the documents.
The company plans to upgrade the farm to SharePoint 2013.
The new farm will use two SQL Server instances that are configured as an AlwaysOn availability group. You use
the following formula to estimate the size of the content database:
Database Size = ((D x V) x S) + (10 KB x (L + (V x D)))
You need to configure the storage for the content databases.
What is the minimum amount of storage space that you must allocate?

A.
101GB

B.
110 GB

C.
220 GB

D.
405 GB

E.
440 GB

Explanation:
Using the formula we make the following calculation (see note below for details):
((200000 x 2) x 250)+ (10 x 1024 x (600000 + (2 x 200000))) which calculates to 103400000000 bytes, which is
103.4 GB.
We would need 110 GB.
Note: Formula to estimate content database storage
1. Use the following formula to estimate the size of your content databases:
Database size = ((D × V) × S) + (10 KB × (L + (V × D)))
2. Calculate the expected number of documents. This value is known as D in the formula.
3. Estimate the average size of the documents that you’ll be storing. This value is known as S in the formula.
4. Estimate the number of list items in the environment. This value is known as L in the formula.
List items are more difficult to estimate than documents. We generally use an estimate of three times the
number of documents (D), but this will vary based on how you expect to use your sites.
5. Determine the approximate number of versions. Estimate the average number of versions any document in
a library will have. This value will usually be much lower than the maximum allowed number of versions. This
value is known as V in the formula. Storage and SQL Server capacity planning and configuration (SharePoint Server 2013)
https://technet.microsoft.com/en-us/library/cc298801.aspx