Cloud Storage Description

CAE supports parallel file system and bucket. Table 1 describes the features and application scenarios of them.

**Table 1** Cloud storage comparison
Dimension	OBS Parallel File System	OBS Bucket
Definition	Parallel File System (PFS) is a high-performance system with access latency in milliseconds. Provided by OBS, PFS supports bandwidth up to the TB/s level and millions of IOPS for processing high-performance computing (HPC) workloads.	A bucket is a container for storing objects in OBS. It provides massive, secure, reliable, and cost-effective data storage.
Data storage logic	Stores files but supports object APIs. That is, you can process files the same way you process objects, implementing the interworking between objects and files.	Stores objects. Files directly stored automatically generate the system metadata, which can also be customized by users.
Features	Shared storage and user-mode file system. High-performance storage services are provided.	Shared storage and user-mode file system. You can configure the object storage class as required.
Application scenario	High-performance computing and media asset archiving, such as video surveillance, online video on demand (VoD), HPC, and big data	Big data analytics, static website hosting, VoD, gene sequencing, intelligent video surveillance, backup and archiving, and enterprise cloud boxes (web disks)