Which of the following checks is NOT part of DASR maintenance?

The process of DASR (Data Acquisition and Storage Resources) maintenance incorporates various checks to ensure the system operates effectively and efficiently. Among these checks, software installation does not typically fall under routine maintenance activities. Instead, software installation is usually performed as a separate task, often when new features or updates are required, or when a system requires significant upgrades.

Maintenance checks like numerical test values, system temperature checks, and normal operation verification are integral to the ongoing functionality and reliability of a DASR system. Numerical test values help in assessing the accuracy of the data being processed. Checking system temperature is crucial for preventing overheating and ensuring that the hardware operates within safe limits. Normal operation verification ensures that the system is functioning as intended, which is essential for reliability.

In contrast, software installation functions as a more administrative and less frequent task that supports the overall system but is not performed routinely as part of maintenance checks. Thus, it stands out as the correct answer since it does not fit the typical maintenance checks that are conducted regularly to maintain operational integrity.