Most log management solutions store log data in a database and enable search by storing an index of the data. When companies are handling terabytes of data every day, the database-backed log management system becomes untenable.
A company ingesting around one terabyte of data per day would need multiple terabytes of storage and a proportional amount of RAM if they wanted to keep 30 days worth of log data searchable.
It’s dramatically cheaper to store data in cold storage than in a database, and scaling cold storage is easier than scaling a database.
When log data is accessed directly in the cold storage, users don’t have to worry about managing indexes between hot and cold store tiers, rehydrating data, or building complex policies.