Disk Allocation (MB)
|
Choose the number of megabytes that you want to allocate to CDR and CMR flat file storage.
The default disk allocation and range vary depending on the size of the server hard drive.
| Note
| The maximum CAR database size equals 6 GB for a Cisco Unified Communications Manager server.
If disk usage exceeds the allocated maximum disk space for CDR files, the system generates the CDRMaximumDiskSpaceExceeded alert and deletes all successfully processed files (those delivered to billing servers and loaded to CAR). If disk usage still exceeds the allocated disk space, the system deletes undelivered files and files within the preservation duration, starting with the oldest, until disk utilization falls below the high water mark.
If you have a large system and do not allocate enough disk space, the system may delete the CDR and CMR files before the CAR Scheduler loads the files into the CAR database. For example, if you configure the CAR Scheduler to run once a day and you set the disk allocation to a value that is not large enough to hold the CDR and CMR files that are generated in a day, the system will delete the files before they are loaded into the CAR database.
|
|
High Water Mark (%)
|
This field specifies the maximum percentage of the allocated disk space for CDR and CMR files. For example, if you choose 2000 megabytes from the Disk Allocation field and 80% from the High Water Mark (%) field, the high water mark equals 1600 megabytes. In addition to the high water mark percentage, the number of CDRs in the CAR database cannot exceed two million records for a Cisco Unified Communications Manager server.
When the disk usage exceeds the percentage that you specify, or the total number of CDRs is exceeded, and the Disable CDR/CMR Files Deletion Based on HWM check box is unchecked, the system automatically purges all successfully processed CDR and CMR files (those delivered to billing servers and loaded to CAR) beginning with the oldest files to reduce disk usage to the amount that you specify in the Low Water Mark (%) drop-down list box.
If the disk usage still exceeds the low water mark or high water mark, the system does not delete any undelivered or unloaded files, unless the disk usage exceeds the disk allocation.
If you check the Disable CDR/CMR Files Deletion Based on HWM check box, the system does not delete CDRs and CMRs based on the percentage that you specify in this field.
| Note
| If CDR disk space exceeds the high water mark, the system generates the CDRHWMExceeded alert.
|
|
Low Water Mark (%)
|
This field specifies the percentage of disk space that is allocated to CDR and CMR files that is always available for use. For example, if you choose 2000 megabytes from the Disk Allocation field and 40% from the Low Water Mark (%) field, the low water mark equals 800 megabytes.
|
CDR / CMR Files Preservation Duration (Days)
|
Choose the number of days that you want to retain CDR and CMR files. The CDR Repository Manager deletes files that fall outside the preservation window.
| Note
| If you continuously receive the CDRMaximumDiskSpaceExceeded alarm, you either must increase the disk allocation or lower the number of preservation days.
|
|
Disable CDR/CMR Files Deletion Based on HWM
|
| Note
| Regardless of whether you enable the deletion of files based on the high-water mark parameter, if disk usage exceeds the disk allocation that you configure, the maximum database size, or the maximum number of records for your installation, the CDR repository manager service deletes CDR and CMR files, beginning with the oldest files, until disk utilization falls below the high water mark.
|
If you do not want to delete CDRs and CMRs even if disk usage exceeds the percentage that you specify in the High Water Mark (%) field, check this check box. By default, this check box remains unchecked, so the system deletes CDRs and CMRs if disk usage exceeds the high water mark.
|
CDR Repository Manager Host Name
|
This field lists the hostname of the CDR repository manager server.
|
CDR Repository Manager Host Address
|
This field lists the IP address of the CDR repository manager server.
|