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The Logging to Local Nonvolatile Storage (ATA Disk) feature enables system logging messages to be saved on an advanced technology attachment (ATA) flash disk. Messages saved on an ATA drive persist after a router is rebooted.
Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the Feature Information Table at the end of this document.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Before the Logging to Local Nonvolatile Storage (ATA Disk) feature can be enabled with the logging persistent command, you must enable the logging of messages to an internal buffer with the logging buffered command. For additional information, refer to the Writing Logging Messages to an ATA Disk, and to the Prerequisites for Logging to Local Nonvolatile Storage (ATA Disk).
The amount of ATA disk space allocated to system logging messages constrains the number of logging files that can be stored. When the allocation threshold is passed, the oldest log file in the directory is deleted to make room for new system logging messages. To permanently store system logging messages, you must archive them to an external device. For more information, refer to the Copying Logging Messages to an External Disk.
Note |
Logging to Local Nonvolatile Storage can use up to 2 GB of storage space. |
The Logging to Local Nonvolatile Storage (ATA Disk) feature adds a router's ATA flash disk as a storage destination for logging messages. When using this feature, be sure to understand the following concepts:
System logging messages include error and debug messages generated by application programming interfaces (APIs) on the router. Typically, logging messages are stored in a router's memory buffer; when the buffer is full, older messages are overwritten by new messages. All logging messages are erased from the memory buffer when the router reboots.
ATA flash disks are PC cards included with some Cisco routers, which are used to provide nonvolatile data storage. The greater the capacity of the ATA flash disk, the more data, such as logging messages, it can hold. Logging messages written to an ATA flash disk persist when the router reboots.
Perform this task to enable the Logging to Local Nonvolatile Storage (ATA Disk) feature and write logging messages to an ATA flash disk:
Perform this task to copy logging messages from the ATA flash disk to an external disk.
The following example shows how to write up to 134217728 bytes (128 MB) of logging messages to the syslog directory of disk 0, specifying a file size of 16384 bytes:
Router(config)# logging buffered Router(config)# logging persistent url disk0:/syslog size 134217728 filesize 16384
The following example shows how to copy logging messages from the router's ATA flash disk to an external disk:
Router# copy disk0:/syslog ftp://myuser/mypass@192.168.1.129/syslog
The following sections provide references related to the Logging to Local Nonvolatile Storage (ATA Disk) feature.
Related Topic |
Document Title |
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copy command |
Cisco IOS Configuration Fundamentals Command Reference |
Network Management commands (including logging commands): complete command syntax, defaults, command mode, command history, usage guidelines, and examples |
Cisco IOS Network Management Command Reference |
Standards |
Title |
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No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature. |
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MIBs |
MIBs Link |
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No new or modified MIBs are supported by this feature, and support for existing MIBs has not been modified by this feature. |
To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL: |
RFCs |
Title |
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No new or modified RFCs are supported by this feature, and support for existing RFCs has not been modified by this feature. |
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Description |
Link |
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The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies. To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds. Access to most tools on the Cisco Support website requires a Cisco.com user ID and password. |
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Table 1 | Feature Information for Logging to Local Nonvolatile Storage (ATA Disk) |
Feature Name |
Releases |
Feature Information |
---|---|---|
Logging to Local Nonvolatile Storage (ATA Disk) |
12.0(26)S 12.2(25)S 12.2(28)SB 12.2(33)SRB 12.4(15)T 12.2(33)SB 12.4(20)T |
The Logging to Local Nonvolatile Storage (ATA Disk) feature enables system logging messages to be saved on an advanced technology attachment (ATA) flash disk. Messages saved on an ATA drive persist after a router is rebooted. The following commands were introduced or modified: logging persistent, logging buffered. |
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