Redundancy ensures that no logs are lost if any one Log Collector becomes unavailable.
https://docs.paloaltonetworks.com/panorama/9-1/panorama-admin/manage-log-collection/manage-collector-groups/configure-a-collector-group
A is correct as per url above.
"Log redundancy is available only if each Log Collector has the same number of logging disks."
(Recommended) Enable log redundancy across collectors if you are adding multiple Log Collectors to a single Collector group.
Redundancy ensures that no logs are lost if any one Log Collector becomes unavailable. Each log will have two copies and each copy will reside on a different Log Collector. For example, if you have two Log Collectors in the collector group the log is written to both Log Collectors.
Enabling redundancy creates more logs and therefore requires more storage capacity, reducing storage capability in half. When a Collector Group runs out of space, it deletes older logs. Redundancy also doubles the log processing traffic in a Collector Group, which reduces its maximum logging rate by half, as each Log Collector must distribute a copy of each log it receives.
These are questions that need to be removed from exams. For one, not all orgs are running separate log collector groups. Also the question states "if a PANORAMA server fails" not if a log collector fails....This is why people give up on certs anymore, too many tricks, not enough treats.
Setting up Panorama in an HA configuration provides redundancy for log collection. Because the managed firewalls are connected to both Panorama peers over SSL, when a state change occurs, each Panorama sends a message to the managed firewalls. The firewalls are notified of the Panorama HA state and can forward logs accordingly.
A is correct. For people opting for D, Panorama HA ensure log *collection* redundancy but doesnt provide redundancy for log data that has already been collected.
Setting up Panorama in an HA configuration provides redundancy for log collection.
https://docs.paloaltonetworks.com/panorama/11-0/panorama-admin/panorama-high-availability/logging-considerations-in-panorama-ha
A is true, but the question is if Panorama fails, not if a log collector fails. You can't have panorama and log collectors in the same collector group. If you have dedicated collector groups then panorama failing will not affect log collection.
Setting up Panorama in an HA configuration provides redundancy for log collection. Because the managed firewalls are connected to both Panorama peers over SSL, when a state change occurs, each Panorama sends a message to the managed firewalls. The firewalls are notified of the Panorama HA state and can forward logs accordingly.
https://docs.paloaltonetworks.com/panorama/11-0/panorama-admin/panorama-high-availability/logging-considerations-in-panorama-ha
When you configure a Collector Group with Log Redundancy in Panorama, it ensures that log data is stored redundantly across multiple Collector Log Servers within the Collector Group. This redundancy ensures that log data is preserved even if one of the servers within the Collector Group fails. This feature is crucial for log data integrity and availability in case of server failures.
A according to this one
https://docs.paloaltonetworks.com/panorama/10-2/panorama-admin/panorama-overview/centralized-logging-and-reporting/caveats-for-a-collector-group-with-multiple-log-collectors
Option A
Redundancy ensures that no logs are lost if any one Log Collector becomes unavailable. Each log will have two copies and each copy will reside on a different Log Collector. For example, if you have two Log Collectors in the collector group the log is written to both Log Collectors.
https://docs.paloaltonetworks.com/panorama/9-1/panorama-admin/manage-log-collection/manage-collector-groups/configure-a-collector-group
A
If you select this option, each log in the Collector Group will have two copies and each copy will reside on a different Log Collector. This redundancy ensures that, if any one Log Collector becomes unavailable, no logs are lost: you can see all the logs forwarded to the Collector Group and run reports for all the log data. Log redundancy is available only if the Collector Group has multiple Log Collectors and each Log Collector has the same number of disks. Log redundancy applies only to newly ingested logs after the setting is enabled and not to existing logs.
https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-web-interface-help/panorama-web-interface/panorama-collector-groups/collector-group-configuration#id763001e8-ea88-4223-99bc-7d3604b8defe
A
https://docs.paloaltonetworks.com/panorama/10-2/panorama-admin/panorama-overview/centralized-logging-and-reporting/caveats-for-a-collector-group-with-multiple-log-collectors#:~:text=Enable%20log%20redundancy%20when%20you%20Configure%20a%20Collector%20Group.%20This%20ensures%20that%20no%20logs%20are%20lost%20if%20any%20one%20Log%20Collector%20in%20the%20Collector%20Group%20becomes%20unavailable.%20Each%20log%20will%20have%20two%20copies%20and%20each%20copy%20will%20reside%20on%20a%20different%20Log%20Collector.
I can't find anything about a Panorama "Cluster". Their is Panorama HA pair but not Cluster. SO I think any answer referring to a Panorama Cluster is wrong.
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