Media Expiration Threshold Parameters
It is recommended to replace media before they begin to degrade. The Media Expiration Threshold Parameters helps you do this by keeping track of various types of media events (e.g., software error, reuses, etc.) for each media.
Media Expiration Threshold Parameters can be viewed or modified from the Media Retirement tab of the Hardware Maintenance Thresholds dialog box. Use CommCell Console Control Panel to access the Hardware Maintenance Thresholds dialog box.
You can set event thresholds for each media type. (e.g., DLTtape IV.) In other words, you can decide how many events of each event type can occur before media from a particular media type exceeds its capacity for reliable operation.
| Refer to the manufacturer's documentation for the recommended maintenance criteria for each media type. |
Whenever a media is obtained from the scratch pool, the system checks the threshold values, before attempting to write to the media. If the threshold values are exceeded, the media is marked as Deprecated and moved to the Retired Media pool. In addition, the system performs the following operations:
- Sends a message to the Event Log
- Generates the Threshold Exceeded alert, if configured
The above operations are also performed when the threshold parameters are exceeded in the course of usage, (i.e. when the media is in the Assigned Media pool). Note, however, the media will continue to remain in the Assigned Media pool, until the data in the media is pruned.
Drive Cleaning Threshold Parameters
To get optimal performance from your drives, you need to clean them periodically.
The Drive Cleaning Threshold Parameter helps you to keep track of various types of drive events that can occur before a drive is cleaned or fixed.
Drive Cleaning Threshold Parameters can be viewed and modified from the Drive Cleaning tab of the Hardware Maintenance Thresholds dialog box.
You can set event thresholds for each drive type. (e.g., DLT 7000.) In other words, you can decide how many events of each type can occur before a drive exceeds its capacity for reliable operation and must be cleaned or fixed. Such events include number of software and hardware errors and number of hours used.
When the number of events exceeds a preset threshold, the system performs the following operations:
- Sends a message to the Event Log
- Set the Cleaning Required option to Yes in the Status tab of Drive Properties dialog box, if the Enable Auto-Cleaning when threshold exceeds option is enabled in the Drive tab of the Library Properties dialog box. See Library Properties for more information on this option.
- Generates the Threshold Exceeded alert, if configured.
- Marks the drive Offline with the Offline Reason indicating
that the drive cleaning threshold was exceeded and the drive Broken
status is indicated as Yes in the Drive Properties - Status
tab, if the Mark Library/Drive Broken When Error Thresholds Exceeded
option is enabled in the Library Properties dialog box. See
Library Properties
for more information on this option.
The system automatically cleans the drive when the drive cleaning threshold parameters are exceeded, if the Enable Auto-Cleaning option for the library is enabled. For information on the auto-cleaning option, see Enable Automatic Drive Cleaning.
The actual usage values for the libraries and drives attached to a MediaAgent can be viewed by generating the Library and Drive Report.
The threshold and usage information for each drive can be viewed in the Odometer tab of the Drive Properties dialog box.
| Refer to the manufacturer's documentation for the recommended cleaning criteria for each drive type. |
Drive Maintenance Threshold Parameters
To get optimal performance from your drives, you must replace them when necessary. Drive Maintenance Threshold Parameters helps you do this by keeping track of various types of drive events (e.g., software and hardware errors, read operations, etc.) for each drive.
Drive Maintenance Threshold Parameters can be viewed or modified from the Drive Maintenance tab of the Hardware Maintenance Thresholds dialog box.
You can set event thresholds for each drive type. (e.g., DLT 7000.) In other words, you can decide how many events of each type can occur before a drive exceeds its capacity for reliable operation. When the number of events exceeds a preset threshold, the system performs the following operations:
- Sends a message to the Event Log
- Generates the Threshold Exceeded alert, if configured
- Marks the drive Offline with the Offline Reason indicating that a threshold was exceeded and the drive Broken status is indicated as Yes in the Drive Properties - Status tab, when the Mark Library/Drive Broken When Error Thresholds Exceeded option is enabled in the Drive tab of the Library Properties dialog box. See Library Properties for more information on this option.
When you replace a drive, you must mark it as replaced. This will reset the appropriate event counters to zero.
| Refer to the manufacturer's documentation for the recommended maintenance criteria for each drive type. |
Library Maintenance Threshold Parameters
To get optimal performance from your libraries, you must replace them when necessary. Library maintenance threshold parameters helps you do this by keeping track of various types of library events (e.g., software and hardware errors) for each library.
Library Maintenance Threshold Parameters can be viewed or modified from the Library Maintenance tab of the Hardware Maintenance Thresholds dialog box.
You can set event thresholds for each library type. (e.g., tape/optical.) In other words, you can decide how many events of each type can occur before a library exceeds its capacity for reliable operation. When the number of events exceeds a preset threshold, the system performs the following operations:
- Sends a message to the Event Log
- Generates the Threshold Exceeded alert, if configured
- .Marks the library Offline with the Offline Reason indicating that a threshold was exceeded in the Library Properties - Status tab, if the Mark Library/ Drive Broken When Error Thresholds Exceeded option is enabled in the Library Properties dialog box. See Library Properties for more information on this option.
When you fix/replace the library, you must mark the library as fixed. This will reset the appropriate event counters to zero. See Mark Library Fixed for more information.
| Refer to the manufacturer's documentation for the recommended maintenance criteria for each library type. |
