Task 2: Identify Memory Requirements for Each Domain Controller
The following table gives a conservative estimate of the minimum required memory allocation for a domain controller. The table assumes that the domain controllers are hosting only Active Directory and DNS.
Table 4. Minimum Required Memory Allocation
| User per domain in a site | Minimum memory requirements per domain controller |
| 1–499 | 512 MB |
| 500–999 | 1 GB |
| > 1,000 | 2 GB |
Although this table lists the minimum, additional memory can improve the performance of the directory. Active Directory will attempt to cache the database in memory. This reduces disk access and improves performance. This cache is limited by the virtual address space and the amount of physical RAM on the server. ...
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