Coldline is another storage type for archival data. It is a very cheap and highly durable storage service. it is mainly used for data archiving, online backup, and disaster recovery.
Data is available in milliseconds of latency. The major difference between coldline storage and nearline storage is that data in coldline is better accessed at most once a year, due to slightly lower availability. Minimum storage duration is 90-day, that means minimum you will be charged for 90 days of coldline storage.
