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In most production environments, it is essential to monitor the uptime of the Double-Take Availability server, as the DR capability of the applications, data, physical, and virtual servers in such environments relies on the availability of the Double-Take server. By tracking the uptime of this server, administrators can determine what percentage of time Double-Take has been up and the percentage of time it was not. If the data on the source and target servers are not in sync at any given point in time, then, you need to know whether it is because the Double-Take server was down during that time period.

Measurement	Description	Measurement Unit	Interpretation
Is_System_Booted	Indicates whether the server has been rebooted during the last measurement period or not.		If the value of this measure is Yes, it means that the server was rebooted during the last measurement period. By checking the time periods when this metric changes from No to Yes, an administrator can determine the times when this server was rebooted. The Detailed Diagnosis of this measure, if enabled, lists the TIME, SHUTDOWN DATE, REBOOT DATE, SHUTDOWN DURATION, and IS MAINTENANCE.
Curr_uptime	Indicates the time period that the system has been up since the last time this test ran.	Secs	If the server has not been rebooted during the last measurement period and the agent has been running continuously, this value will be equal to the measurement period. If the server was rebooted during the last measurement period, this value will be less than the measurement period of the test. For example, if the measurement period is 300 secs, and if the server was rebooted 120 secs back, this metric will report a value of 120 seconds. The accuracy of this metric is dependent on the measurement period - the smaller the measurement period, greater the accuracy.
Total_uptime	Indicates the total time that the server has been up since its last reboot.		This measure displays the number of years, months, days, hours, minutes and seconds since the last reboot. Administrators may wish to be alerted if a server has been running without a reboot for a very long period. Setting a threshold for this metric allows administrators to determine such conditions.