NEC Express5800 Series Installation Manual page 21

Chapter 1 Installing Windows
System partition size
The system partition size can be calculated by using the following formula.
Size required to install the OS + paging file size + dump file size + application size
Desktop Experience
Server Core
For example, if the installed memory size is 2 GB (2,048 MB), and application size is 100 MB, the
partition size is calculated as follows:
The above mentioned partition size is the minimum partition size required for system installation.
Ensure that the partition size is sufficient for system operations.
The following partition sizes are recommended.
Note
Size required to install the OS
Paging file size (recommended)
Dump file size
Application size
Size required to install the OS
Paging file size (recommended)
Dump file size
Application size
15,200 MB + (2,048 MB  1.5) + 2,048 MB + 400 MB + 100 MB
= 20,820 MB
Desktop Experience
Server Core installations
*1 GB = 1,024 MB
 The above paging file sizes are recommended for collecting debug information
(dump file). The initial size of the Windows partition paging file must be large
enough to store dump files.
Make sure you set a sufficient paging file size. If the paging file is insufficient, there
will be a virtual memory shortage that may result in an inability to collect correct
debug information.
 Regardless of the sizes of internal memory and write debug information, the
maximum size of the dump file is "installed memory size + 400 MB (installed memory
size + 1,100 MB when installed memory size is 4 TB or more)".
 When installing other applications or other items, add the amount of space needed
by the application to the partition.
Express5800/R110j-1 Installation Guide (Windows)
= 15,200 MB
= installed memory size  1.5
= installed memory size + 400 MB
(installed memory size is 4 TB or less)
= installed memory size + 1,100 MB
(installed memory size is exceeding 4 TB)
= as required by the application
= 10,300 MB
= installed memory size  1.5
= installed memory size + 400 MB
(installed memory size is 4 TB or less)
= installed memory size + 1,100 MB
(installed memory size is exceeding 4 TB)
= as required by the application
: 32,768 MB (32 GB) or more
: 32,768 MB (32 GB) or more
Installing Windows Server 2016
21