veFaaS provides multiple storage types to meet storage and file access requirements in different scenarios. This topic introduces the applicable scenarios and differences among types to help you select an appropriate type.

Comparison items	FileNAS	Torch Object Storage (TOS)	Temporary disk
Description	FileNAS is a cost-effective cloud storage service for Volcano Engine elastic computing, container services, and AI intelligent applications. It offers high-performance shared access, continuous availability, elastic scalability, and cross-region accessibility.	TOS provides large-scale, secure, low-cost, easy-to-use, highly reliable, and highly available distributed cloud storage.	The lifecycle of temporary disk space is the same as that of the underlying container executing the function. Data is deleted when the container is destroyed.
Application scenarios	Log storage and application file storage	Log storage and application file storage	Temporary files generated by business applications
Maximum space	Scalable	Scalable	512 MB
Persistence	Persistent storage	Persistent storage	Temporary storage
Cross-invocation sharing	Yes	Yes	No
Storage content access	Writable	Writable	Writable
Storage type	File system	Object	File system
Event source integration	No	Yes	No
Function access speed	Relatively fast	Fast	Fastest
Billing	FileNAS billing	TOS billing	Free of charge
Related document	Mounting FileNAS	Mounting TOS	-

Last updated: 2026.08.19 14:06:06

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