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Configure pagefile in Exchange Server

What are the best practice and recommended pagefile for Exchange Server 2013/2016/2019? This article will show the recommended pagefile for an Exchange Server, how to calculate the pagefile and how to configure the pagefile in Exchange Server 2013/2016/2019.

Pagefile recommend sizing

There is a difference between the recommended pagefile on Exchange Server 2013/2016 and Exchange Server 2019.

Exchange Server 2013/2016

  • Pagefile sizing: RAM + 10 MB (maximum of 32 GB RAM + 10 MB)
  • Mailbox: 8 GB minimum
  • Edge Transport: 4 GB minimum
  • Maximum RAM: 192 GB

If you want to configure the Exchange Server 2013/2016 pagefile. Here are some examples:

8 GB8202 MB
16 GB16394 MB
32 GB32778 MB
64 GB32778 MB
128 GB32778 MB
192 GB32778 MB

Exchange Server 2019

  • Pagefile sizing: 25% of total RAM (maximum of 64 GB)
  • Mailbox: 128 GB minimum
  • Edge Transport: 64 GB minimum
  • Maximum RAM: 256 GB

If you want to configure the Exchange Server 2019 pagefile. Here are some examples:

64 GB16384 MB
96 GB24576 MB
128 GB32768 MB
160 GB40960 MB
192 GB49152 MB
256 GB65536 MB

The pagefile recommendation to keep in mind:

  • The pagefile should not be “System Managed”
  • The pagefile “Initial size” and “Maximum size” should be the same

Configure pagefile on Exchange Server

We have 16 GB configured as physical memory on the Exchange Server 2013/2016. It means that we need to configure 16394 MB as a pagefile. The pagefile will take 16 GB of size on the Exchange Server hard drive.

Note: Ensure that there is enough space free on the Exchange Server C: drive.

Follow the below steps to configure the Exchange Server pagefile:

  1. Right-click on This PC and click on Properties
  2. Select Advanced system settings
  3. Click Advanced tab
  4. Under Performance, click Settings
  5. Under Performance Options, click Advanced tab
  6. Now under Virtual memory, select Change
  7. Uncheck Automatically manage paging file size for all drives
  8. Select Custom size
  9. Initial size (MB): 16394
  10. Maximum size (MB): 16394
  11. Click Set
  12. Click three times on OK
  13. Restart your Exchange Server
Pagefile Exchange 2013/2016 best practice configure pagefile


You learned the pagefile recommendations and best practices for Exchange Server 2013/2016/2019. You must have a pagefile configured on the Exchange Server. If you have not configured the pagefile, I recommend you do. Read the blog by Microsoft if you want more information about the pagefile.

Did you enjoy this article? You may also like Get mailbox size of all users in Exchange with PowerShell. Don’t forget to follow us and share this article.



ALI TAJRAN is a passionate IT Architect, IT Consultant, and Microsoft Certified Trainer. He started Information Technology at a very young age, and his goal is to teach and inspire others. Read more »

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