Teradata ML Engine storage includes local spool for temporary data.
Temporary Data Storage
The local spool attached to the worker node (pod) temporarily stores the data moved to and from the SQL Engine storage. Each node holds approximately three terabytes (3 TB) of data. This approach enables fast read and write access to data for analysis. The local spool is a storage array equipped with Solid State Drives (SSDs) and employs RAID1 to improve data availability through hardware redundancy.
The stored data in this temporary storage is non-persistent, unprotected, and is cleared at the end of a Teradata SQL Engine session.