XProtect Express 1.1; Administrator's Manual - Milestone

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Milestone XProtect ® Express 1.1Administrator's ManualBehave erratically when it gets close to the 2 GB virtual memory limit. Symptoms can include databasecorruption, and client-server or camera-server communication errors.Become unstable and crash if it exceeds the 2 GB virtual memory limit. During such crashes, the codemanaging the surveillance system databases is not closed properly, and databases will become corrupt.In case of a crash, Windows will normally restart the Recording Server service. However, when theRecording Server service is restarted, one of its first tasks will be to repair the databases. The databaserepair process can in some cases take several hours, depending on the amount of data in the corrupteddatabases.If you experience problems, and you run XProtect Express 6.5 or newer, making Windows use 3 GB for runningprocesses is likely to solve the problems. If you have not experienced problems, but you run XProtect Express 6.5or newer and your XProtect Express installation is very large and/or features many megapixel cameras, 3 GBswitching can help prevent the problems from occurring.The way to configure 32-bit Windows to be LARGEADDRESSAWARE depends on your type of Windowsoperating system. In the following, you will see two methods outlining Microsoft's recommended procedure forincreasing the per-process memory limit to 3 GB. Use the first method if running Windows XP Professional orWindows Server 2003. Use the second method if running Windows 2008 Server, Windows Vista Business,Windows Vista Enterprise or Windows Vista Ultimate.What to do: If running Windows XP Professional or Windows Server 2003The following technique can be used to add the 3 GB switch to the boot.ini file.1. From a command prompt, enter the following to add the 3 GB switch to the end of the first line of theoperating system section in the boot.ini file (requires administrative privileges):BOOTCFG /RAW "/3GB" /A /ID 1Where:oooo/RAW specifies the operating system options for the boot entry. The previous operating systemoptions will be modified."/3GB" specifies the 3 GB switch./A specifies that the operating system options entered with the /RAW switch will be appended to theexisting operating system options./ID specifies the boot entry ID in the OS Load Options section of the boot.ini file to add the operatingsystem options to. The boot entry ID number can be obtained by performing the commandBOOTCFG /QUERY (this displays the contents of the boot.ini file) at the command prompt.2. Reboot after editing the boot.ini file for the changes to take effect.Remove the 3 GB SwitchRemove the 3 GB switchIf you want to undo the 3 GB switch, follow this procedure:1. Select Start > Control Panel, and double-click the System icon.2. Select the Advanced tab, and click the Settings button in the Startup and Recovery section.3. Click the Edit button in the System Startup section. The boot.ini file will launch in an editor.4. Remove the "/3GB" from the end of the appropriate boot entry line under the [operating systems]section. Save and close the file.5. Click OK in the Startup and Recovery section.www.milestonesys.com 164 Common tasks
Milestone XProtect ® Express 1.1Administrator's Manual6. Reboot after editing the boot.ini file for the changes to take effect.What to do: If running Windows 2008 Server or Windows Vista1. Select Start > All Programs > Accessories, right-click Command Prompt, and select Run asadministrator, then click Continue.2. Enter the following command to add the 3 GB switch to the current operating system boot entry:BCDEDIT /SET INCREASEUSERVA 3072Where:ooUSERVA specifies an alternate amount of user-mode virtual address space for operating systems.3072 Specifies 3 GB (3072 MB).3. Reboot after editing for the changes to take effect.Remove the /3GB switch1. Select Start > All Programs > Accessories, right-click Command Prompt, and select Run asadministrator, then click Continue.2. Enter the following command to remove the 3 GB switch from the current operating system boot entry:BCDEDIT /DELETEVALUE INCREASEUSERVA3. Reboot after editing for the changes to take effect.About protecting recording databases from corruptionIn the Management Application, you can select which action to take if a camera database becomes corrupted.The actions include several database repair options. While being able to select such actions is highly valuable, itis of course even better to take steps to ensure that your camera databases do not become corrupted.Power outages: use a UPSThe single most common reason for corrupt databases is the recording server being shut down abruptly, withoutfiles being saved and without the operating system being closed down properly. This may happen due to poweroutages, due to somebody accidentally pulling out the server's power cable, or similar.The best way of protecting your recording servers from being shut down abruptly is to equip each of yourrecording servers with a UPS (Uninterruptible Power Supply).The UPS works as a battery-driven secondary power source, providing the necessary power for saving open filesand safely powering down your system in the event of power irregularities. UPSs vary in sophistication, but manyUPSs include software for automatically saving open files, for alerting system administrators, etc.Selecting the right type of UPS for your organization's environment is an individual process. When assessing yourneeds, however, do bear in mind the amount of runtime you will require the UPS to be able to provide if the powerfails; saving open files and shutting down an operating system properly may take several minutes.Windows Task Manager: Be careful when ending processesWhen working in Windows Task Manager, be careful not to end any processes which affect the surveillancesystem. If you end an application or system service by clicking End Process in the Windows Task Manager, theprocess will not be given the chance to save its state or data before it is terminated. This may lead to corruptcamera databases.www.milestonesys.com 165 Common tasks
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XProtect Express 1.1; Administrator's Manual - Milestone

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