Troubleshooting
Problem
Each QRadar appliance that stores event or flow data creates local index files on the appliance to improve search speed. When you move /store/ariel data manually between appliances, reindexing is necessary to ensure old indexes are removed and updated. Indexes allow QRadar running on the host to determine where on disk the data resides so results return quickly. When indexes are not available, a direct scan of the raw data is performed, which can create unnecessary disk (I/O) and CPU load and degrade search speed.
Reindexing your data is required in the following scenarios:
- If data migrated for a timeframe that already has data on the destination host.
- If data migrated from multiple hosts to a single host where the data has an overlapping time frame.
NOTE: Depending on the amount of data on the host, reindexing data might take a considerable amount of time. It is recommended to use the "screen" command as noted in previous steps to avoid interruptions related to network issues.
Document Location
Worldwide
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Document Information
Modified date:
03 July 2023
UID
ibm17005503