# Overview

CCE allows you to mount a volume created from an Object Storage Service (OBS) bucket to a container to store data persistently. Object storage is commonly used in cloud workloads, data analysis, content analysis, and hotspot objects.

Figure 1 Mounting OBS volumes to CCE

#### Storage Class

Object storage offers three storage classes, Standard, Infrequent Access, and Archive, to satisfy different requirements for storage performance and costs.

- The Standard storage class features low access latency and high throughput. It is therefore applicable to storing a large number of hot files (frequently accessed every month) or small files (less than 1 MB). The application scenarios include big data analytics, mobile apps, hot videos, and picture processing on social media.
- The Infrequent Access storage class is ideal for storing data that is semi-frequently accessed (less than 12 times a year), with requirements for quick response. The application scenarios include file synchronization or sharing, and enterprise-level backup. It provides the same durability, access latency, and throughput as the Standard storage class but at a lower cost. However, the Infrequent Access storage class has lower availability than the Standard storage class.
- The Archive storage class is suitable for archiving data that is rarely-accessed (averagely once a year). The application scenarios include data archiving and long-term data backup. The Archive storage class is secure and durable at an affordable low cost, which can be used to replace tape libraries. However, it may take hours to restore data from the Archive storage class.

#### Description

- Standard APIs: With HTTP RESTful APIs, OBS allows you to use client tools or third-party tools to access object storage.
- Data sharing: Servers, embedded devices, and IoT devices can use the same path to access shared object data in OBS.
- Public/Private networks: OBS allows data to be accessed from public networks to meet Internet application requirements.
- Capacity and performance: No capacity limit; high performance (read/write I/O latency within 10 ms).
- Use cases: Deployments/StatefulSets in the ReadOnlyMany mode and jobs created for big data analysis, static website hosting, online video on demand (VoD), gene sequencing, intelligent video surveillance, backup and archiving, and enterprise cloud boxes (web disks). You can create object storage by using the OBS console, tools, and SDKs.

#### Reference

CCE clusters can also be mounted with OBS buckets of third-party tenants, including OBS parallel file systems (preferred) and OBS object buckets.

Parent topic: Using OBS Buckets as Storage Volumes