Document Center
Object Storage Service
Product updates
Product Introduction
What is OSS?
Benefits
Scenarios
Features
Terms
Usage notes
FAQ
Pricing
Billing items and methods
Overview
Storage fees
Traffic fees
API operation calling fees
Data processing fees
Object tagging fees
Transfer acceleration fees
Temporary storage fees
OSS DDoS protection fees
Billing methods
Free quota
Pay-as-you-go
Subscription
Overview
Upgrade resource plans
Renew resource plans
SCU
Query OSS billing data generated on an hourly basis
Service status after overdue payments
FAQ
How do I deactivate OSS or stop OSS charging my resources?
Why is the Internet traffic displayed in the OSS console inconsistent with that of Log Service this month?
Why is the billed storage usage of IA and Archive objects greater than their actual storage usage?
Quick Start
Get started with OSS
OSS console
Operations in the OSS console
Create buckets
Upload objects
Download objects
Share objects
Use a custom domain name to access OSS resources
ossutil
ossbrowser
OSS SDK for Java
Advanced usage
Developer Guide
Usage instructions
Terms
Endpoint
Regions and endpoints
OSS domain names
OSS internal endpoints and VIP ranges
Access to OSS resources from ECS instances by using an internal endpoint of OSS
Choose an OSS region
Storage classes
Overview
Convert storage classes
Buckets
Overview
Bucket naming conventions
Create buckets
Configure the ACL feature for a bucket
Query the region information of a bucket
List buckets
Hierarchical namespace
Lifecycle
Overview
Lifecycle rules based on the last modified time
Lifecycle rules based on the last access time
Configuration elements
Configuration examples
Bucket inventory
Enable pay-by-requester
Map custom domain names
Transfer acceleration
Configure CORS
Bucket tagging
Delete buckets
FAQ
How do I hide the error information returned from OSS when I retrieve an object from OSS by using CDN?
Why am I unable to access the default homepage of a bucket when I retrieve an object from a private bucket by using CDN?
Objects
Overview
Object naming conventions
Upload files
Simple upload
Multipart upload and resumable upload
Upload callback
Authorized third-party upload
Form upload
Append upload
RTMP-based stream ingest
Download files
Simple download
Resumable download
Authorize third-party users to download objects
OSS Select
Manage files
List objects
Copy objects
Restore objects
Delete objects
Manage back-to-origin configurations
Configure object tagging
Manage object metadata
Use directories to manage objects
Single-connection bandwidth throttling
Call the SelectObject operation to query objects
FAQ
How do I obtain the URL of an uploaded object?
How do I configure the Content-Type of objects?
What are the OSS batch operations?
How do I upload and download folders to and from OSS?
Can I use ETag values as OSS MD5 hashes to check data consistency?
How do I compress objects that I download from OSS in the GZIP format?
How do I configure an HTTPS request and an SSL certificate?
Can I recover an OSS object after the object is deleted or overwritten?
Why anonymous users cannot access public-read objects?
Why can an expired signed object URL be used to access object?
What are the operations that affect the LastModified attribute of OSS objects?
Can I modify the expiration time of a signed URL?
How do I modify, update, and edit objects?
Can OSS buckets be renamed or OSS objects be migrated?
What do I do if "TypeError: Failed to fetch" is displayed when I use a browser to access a bucket or an object?
What do I do if "You are forbidden to list buckets" is returned when I access the accelerated domain name that is mapped to a bucket?
What do I do if my data is lost?
Data security
Access and control
Overview
Authentication
ACL
Bucket Policy
Overview
Examples
Tutorial: Implement data sharing across departments based on bucket policies
Tutorial: Authorize a RAM user under another Alibaba Cloud account by adding a bucket policy
RAM Policy
Overview
Common examples of RAM policies
Tutorial: Use RAM policies to control access to OSS
Tutorial: Authorize a RAM user of another Alibaba Cloud account by creating a RAM role
Disaster recovery
ZRS
Cross-region replication
Same-region replication
Cross-region replication in specific scenarios
Data replication troubleshooting
Data encryption
Server-side encryption
Client-side encryption
Versioning
Overview
Manage objects in a versioning-enabled bucket
Manage objects in a versioning-suspended bucket
Delete marker
FAQ
Signature
OSS request process
Include signatures in the Authorization header
Add signatures to a URL
FAQ
Use a temporary access credential provided by STS to access OSS
Configure hotlink protection
Retention policy
OSS sandbox
OSS DDoS protection
Manage logs
Logging
Real-time log query
Static website hosting
Overview
Tutorial: Use a custom domain name to configure static website hosting
Data Processing
Image Processing
Overview
IMG implementation modes
Parameters
Resize images
Add watermarks
Custom crop
Quality transformation
Format conversion
Query image information
Auto-rotate
Incircle
Indexed cut
Rounded rectangle
Blur
Rotate
Gradual display
Query the average tone
Brightness
Sharpen
Contrast
Image style
Save processed images
Common errors
FAQ
FAQ on using old and new versions of APIs and domain names
Video snapshots
Monitoring service
Overview
Monitoring service console user guide
Alert service
Access monitoring data
Metrics
Service monitoring, diagnosis, and troubleshooting
FAQ
Event notifications
Overview
Tutorial: Use MNS to send notifications for OSS events
Tools
OSS tools
ossutil
Overview
Download and installation
Common commands
appendfromfile
bucket-cname
bucket-encryption
bucket-policy
bucket-tagging
bucket-versioning
cat
config
cors
cors-options
cp
Overview
Upload objects
Download objects
Copy objects
create-symlink (create a symbolic link)
du (query object sizes)
getallpartsize
hash
help
inventory (configure bucket inventories)
lifecycle
listpart
logging
Irb
Is
mb (create buckets)
mkdir
object-tagging (add, modify, query, and delete object tags)
probe
read-symlink (query a symbolic link)
referer
replication
request-payment (configure pay-by-requester)
restore (restore objects)
revert-versioning
rm
set-acl (configure or modify object or bucket ACLs)
set-meta
sign (generate signed object URLs)
stat
sync (synchronize objects)
Overview
Synchronize local files to OSS
Synchronize OSS objects to your computer
Synchronize objects between OSS paths
update
website
worm (manage retention policies)
View options
FAQ
ossbrowser
Install and log on to ossbrowser
Use ossbrowser
Permission management
Troubleshooting
ossimport
Architectures and configurations
Standalone deployment
Distributed deployment
Troubleshooting
ossfs
Overview
Installation
Advanced configurations
Common options
FAQ
ossftp
Overview
Installation
Use case
How to store remote attachments from Discuz! to OSS
How to store remote attachments from PHPWind to OSS
How to store remote attachments from WordPress websites to OSS
FAQ
osscmd (unavailable)
Overview
Quick start
Commands for operations on buckets
Commands for operations on objects
Commands for operations on parts
RAM Policy Editor
SDK Code Samples
Overview
Java
Preface
Installation
Initialization
Quick start
Buckets
Create buckets
List buckets
Determine whether buckets exist
Query the regions of buckets
Query bucket information
Manage bucket ACLs
View whether the hierarchical namespace feature is enabled
Delete buckets
Bucket tagging
Bucket inventory
Bucket policy
Retention policy
Manage lifecycle rules
Enable pay-by-requester mode
Hotlink protection
Set logging
Static website hosting
Cross-region replication
CORS
Transfer acceleration
Upload objects
Overview
Simple upload
Form upload
Append upload
Resumable upload
Multipart upload
Upload progress bars
Upload callback
Download objects
Overview
Streaming download
Download to files
Range download
Resumable download
Conditional download
Download progress bars
Manage objects
Overview
Determine whether an object exists
Manage object ACLs
Manage Object Meta
Convert the storage class of an object
List objects
Query objects
Rename objects
Delete objects
Copy objects
Disable overwrite for objects with the same name
Restore objects
Manage symbolic links
Manage directories
Versioning
Versioning
Upload objects
Download objects
Copy objects
List objects
Delete objects
Restore objects
Obtain object metadata
Manage object ACL
Manage symbol links
Object tagging
Configure object tagging
Query the tags of an object
Delete the tags of an object
Object tagging and lifecycle rules
Single-connection bandwidth throttling
Data encryption
Server-side encryption
Client-side encryption
Authorized access
Data security
IMG
Error handling
FAQ
PHP
Preface
Installation
Initialization
Quick start
Buckets
Create buckets
List buckets
Determine whether buckets exist
Query the regions of buckets
Query the metadata of buckets
Query bucket information
Manage bucket ACLs
Delete buckets
Manage lifecycle rules
Pay-by-requester
Configure bucket tagging
Hotlink protection
Bucket policy
Set logging
Retention policy
Static website hosting
CORS
Map custom domain names
Upload objects
Overview
Simple upload
Append upload
Multipart upload
Upload callback
Download objects
Overview
Download objects to local files
Download to local memory
Range download
Conditional download
Manage objects
Overview
Determine whether a specified object exists
Manage ACL for an object
Manage object metadata
Convert the storage classes of objects
Prevent objects from being overwritten by objects with the same names
List objects
Delete objects
Copy objects
Restore objects
Manage symbolic links
Enable MD5 verification
Versioning
Versioning
Upload objects
Download objects
Copy objects
List objects
Delete objects
Restore objects
Query object metadata
Manage object ACLs
Manage symbolic links
Object tagging
Configure object tagging
Query the tags of an object
Remove the tags of an object
Single-connection bandwidth throttling
Data encryption
Server-side encryption
Authorized access
IMG
Exception handling
Node. js
Installation
Initialization
Configuration items
Quick start
Buckets
Create buckets
List buckets
Determine whether a bucket exists
Query the regions of buckets
Query bucket information
Manage bucket ACLs
Delete buckets
Pay-by-requester mode
Manage lifecycle rules
Bucket policy
Retention policy
Bucket tagging
Bucket inventory
CORS
Access log
Hotlink protection
Static website hosting
Use custom domain names
Upload objects
Overview
Local file upload
Upload from local memory
Streaming upload
Multipart upload
Append upload
Resumable upload
Upload callback
Download objects
Overview
Download objects as files
Download to local memory
Streaming download
Range download
Conditional download
Manage objects
Overview
Determine whether an object exists
Manage Object Meta
Manage the ACL of an object
List objects
Copy objects
Disable overwrite for objects with the same name
Delete objects
Convert the storage classes of objects
Restore an Archive object
Manage symbolic links
Configure versioning
Versioning
Upload objects
Download objects
Copy objects
List objects
Delete objects
Restore objects
Obtain object metadata
Manage object ACL
Manage symbolic links
Object tagging
Configure object tagging
Query the tags of an object
Delete the tags of an object
Object tagging and lifecycle rules
Single-connection bandwidth throttling
Server-side encryption
Authorized access
IMG
Error handling
FAQ
Python
Preface
Installation
Initialization
Quick start
Buckets
Create a bucket
List buckets
Obtain the region of a bucket
Determine whether a bucket exists
Obtain bucket information
Manage bucket ACLs
Delete buckets
Configure bucket tagging
Bucket inventory
Bucket policy
Retention policy
Enable pay-by-requester mode
Manage lifecycle rules
Hotlink protection
Set logging
Static website hosting
CORS
Transfer acceleration
CRR
Upload objects
Overview
Simple upload
Append upload
Resumable upload
Multipart upload
Upload progress bars
Upload callback
Download objects
Overview
Streaming download
Download an object to a local file
Range download
Resumable download
Download progress bars
Manage objects
Overview
Determine whether an object exists
Manage ACL for an object
Manage object metadata
Convert the storage class of an object
List objects
Query objects
Delete objects
Copy objects
Disable overwriting object with the same name
Restore objects
Manage symbolic links
Versioning
Versioning
Upload objects
Download objects
Copy objects
List objects
Delete objects
Restore objects
Obtain object metadata
Manage object ACL
Manage symbolic links
Object tagging
Configure object tagging
Query the tags of an object
Remove the tags of an object
Object tagging and lifecycle rules
Single-connection bandwidth throttling
Data encryption
Client-side encryption
Server-side encryption
Authorized access
Data security
Enable log recording
IMG
Chinese character and time
Exception handling
FAQ
Browser.js
Installation
Parameters
Quick start
Upload objects
Download objects
Manage objects
Map custom domain names
Authorized access
Set ACLs
IMG
Application in browsers
Exception handling
FAQ
Log collection
. NET
Preface
Installation
Initialization
Quick start
Buckets
Create buckets
List buckets
Determine whether buckets exist
Query the regions of buckets
Query bucket information
Manage bucket ACLs
Delete buckets
Configure bucket tagging
Bucket inventory
Manage lifecycle rules
Enable pay-by-requester
Bucket policy
Set logging
CORS
Static website hosting
Hotlink protection
Upload objects
Overview
Simple upload
Append upload
Resumable upload
Multipart upload
Upload progress bars
Upload callback
Download objects
Overview
Streaming download
Range download
Resumable download
Download progress bars
Manage objects
Overview
Determine whether a specified object exists
Manage object ACLs
Manage Object Meta
List objects
Delete objects
Copy objects
Restore objects
Manage symbolic links
Versioning
Versioning
Upload objects
Download objects
Copy objects
Delete objects
Restore objects
Query object metadata
Manage the ACL of an object
Manage symbolic links
Object tagging
Configure object tagging
Query the tags added to an object
Delete the tags added to an object
Object tagging and lifecycle rules
Single-connection bandwidth throttling
Server-side encryption
Authorized access
IMG
Exception handling
Android
Preface
Installation
Initialization
Quick start
Buckets
Create buckets
Query bucket ACLs
Query bucket information
Delete buckets
Manage lifecycle rules
Hotlink protection
Access logging
Upload objects
Overview
Simple upload
Append upload
Multipart upload
Resumable upload
Progress bar
Upload callback
Download objects
Overview
Streaming download
Range download
Download to files
Conditional download
Progress bars
Manage objects
Overview
Determine whether a specified object exists
Query the ACL of an object
Copy an object
List objects
Delete objects
Set the Content-Type of an object
Obtain the metadata of an object
Restore an archive object
Manage symbolic links
Data security
Sign a URL
Authorized access
IMG
Exception handling
Go
Preface
Installation
Initialization
Quick start
Buckets
Create buckets
List buckets
Determine whether buckets exist
Query the regions of buckets
Query bucket information
Manage bucket ACLs
Delete buckets
Configure bucket tagging
Manage inventory rules
Transfer acceleration
Bucket policy
Manage lifecycle rules
Pay-by-requester mode
Hotlink protection
Set logging
Static website hosting
CORS
Upload objects
Overview
Simple upload
Append upload
Resumable upload
Multipart upload
Progress bars
Download objects
Overview
Streaming download
Range download
Download objects
Resumable download
Conditional download
Download a compressed object
Use progress bars
Manage objects
Overview
Determine whether a specified object exists
Manage ACL for an object
Manage object metadata
Convert the storage class of an object
List objects
Delete objects
Copy objects
Disable overwrite for objects with the same name
Restore objects
Manage symbolic links
Versioning
Versioning
Upload objects
Download objects
Copy objects
List objects
Delete objects
Restore objects
Obtain object metadata
Manage object ACL
Manage symbol links
Object tagging
Configure object tagging
Obtain the tags added to an object
Delete the tags added to an object
Object tagging and lifecycle rules
Data encryption
Client-side encryption
Server-side encryption
Single-connection bandwidth throttling
Data security
Authorized access
IMG
Error handling
iOS
Preface
Installation
Quick start
Initialization
Buckets
Create buckets
List buckets
Query bucket ACLs
Query bucket information
Delete buckets
Upload objects
Overview
Simple upload
Multipart upload
Append upload
Resumable upload
Upload callback
Upload progress bars
Download objects
Overview
Simple download
Streaming download
Range download
Resumable download
Download progress bars
Manage objects
Overview
Determine whether the specified object exists
Obtain object metadata
List objects
Copy objects
Delete objects
Manage symbolic links
Restore Archive objects
Manage object ACLs
Data security
Signed URLs
Authorized access
IMG
Handle exceptions
C++
Preface
Installation
Initialization
Quick start
Buckets
Create buckets
List buckets
Determine whether buckets exist
Query the regions of buckets
Query bucket information
Manage bucket ACLs
Delete buckets
Configure bucket tagging
Bucket policy
Bucket inventory
Manage lifecycle rules
Retention policy
Pay-by-requester mode
Hotlink protection
Access logging
Static website hosting
CORS
Upload objects
Overview
Simple upload
Append upload
Resumable upload
Multipart upload
Interrupt an upload task
Use a progress bar
Upload callback
Download objects
Overview
Download to a file
Download objects to the local memory
Range download
Resumable download
Use a progress bar
Manage objects
Overview
Determine whether the specified object exists
Manage the ACL of an object
Manage Object Meta
Convert the storage class of an object
List objects
Delete objects
Copy an object
Disable overwrite for objects with the same name
Restore objects
Manage symbolic links
Versioning
Versioning
Upload objects
Download objects
Copy objects
Delete objects
Restore objects
Obtain object metadata
Manage object ACLs
Manage symbolic links
Object tagging
Configure object tagging
Obtain the tags added to an object
Delete the tags added to an object
Object tagging and lifecycle rules
Data encryption
Client-side encryption
Server-side encryption
Single-connection bandwidth throttling
Data security
Authorized access
IMG
C
Preface
Installation
Initialization
Quick start
Buckets
Create buckets
List buckets
Query the regions of buckets
Query bucket information
Manage bucket ACLs
Delete buckets
Set logging
CORS
Manage lifecycle rules
Hotlink protection
Static website hosting
Upload objects
Overview
Simple upload
Append upload
Resumable upload
Multipart upload
Upload progress bars
Upload callback
Download objects
Overview
Download an object to a local file
Download to your local memory
Range download
Resumable download
Download progress bars
Manage objects
Overview
Manage ACL for an object
Manage Object Meta
List objects
Delete objects
Copy objects
Restore an archive object
Manage symbolic links
Authorized access
IMG
Error handling
FAQ
Ruby
Installation
Quick start
Buckets
Create buckets
List buckets
Determine whether buckets exist
Manage bucket ACLs
Delete buckets
Manage lifecycle rules
Hotlink protection
Set logging
CORS
Static website hosting
Map custom domain names
Upload objects
Download objects
Manage objects
Use STS to authorize temporary access
Exception handling
Rails application
API Reference
Description
List of operations by function
List of supported API operations
Common HTTP headers
Access control
Verify user signatures
Include signatures in the Authorization header
Add signatures to a URL
Bucket ACL
Service operations
GetService (ListBuckets)
Bucket operations
Basic operations
PutBucket
DeleteBucket
GetBucket (ListObjects)
GetBucketV2 (ListObjectsV2)
GetBucketInfo
GetBucketLocation
Retention policy
InitiateBucketWorm
AbortBucketWorm
CompleteBucketWorm
ExtendBucketWorm
GetBucketWorm
ACL
PutBucketAcl
GetBucketAcl
Lifecycle
PutBucketLifecycle
GetBucketLifecycle
DeleteBucketLifecycle
Transfer acceleration
PutBucketTransferAcceleration
GetBucketTransferAcceleration
Versioning
PutBucketVersioning
GetBucketVersioning
GetBucketVersions(ListObjectVersions)
Replication
PutBucketReplication
GetBucketReplication
GetBucketReplicationLocation
GetBucketReplicationProgress
DeleteBucketReplication
Authorization policy
PutBucketPolicy
GetBucketPolicy
DeleteBucketPolicy
Inventory
PutBucketInventory
GetBucketInventory
ListBucketInventory
DeleteBucketInventory
Logging
PutBucketLogging
GetBucketLogging
DeleteBucketLogging
Static websites
PutBucketWebsite
GetBucketWebsite
DeleteBucketWebsite
Hotlink protection
PutBucketReferer
GetBucketReferer
Tagging
PutBucketTags
GetBucketTags
DeleteBucketTags
Encryption
PutBucketEncryption
GetBucketEncryption
DeleteBucketEncryption
Pay-by-requester
PutBucketRequestPayment
GetBucketRequestPayment
CORS
Introduction
PutBucketCors
GetBucketCors
DeleteBucketCors
Options
Object operations
Basic operations
PutObject
GetObject
GetObject
CopyObject
AppendObject
DeleteObject
DeleteMultipleObjects
HeadObject
GetObjectMeta
PostObject
Callback
RestoreObject
SelectObject
Directory management
CreateDirectory
Rename
DeleteDirectory
Multipart upload
InitiateMultipartUpload
UploadPart
UploadPartCopy
CompleteMultipartUpload
AbortMultipartUpload
ListMultipartUploads
ListParts
ACL
PutObjectACL
GetObjectACL
Symbolic link
PutSymlink
GetSymlink
Tagging
PutObjectTagging
GetObjectTagging
DeleteObjectTagging
LiveChannel-related operations
Overview
RTMP ingest URLs and signatures
PutLiveChannel
ListLiveChannel
DeleteLiveChannel
PutLiveChannelStatus
GetLiveChannelInfo
GetLiveChannelStat
GetLiveChannelHistory
PostVodPlaylist
GetVodPlaylist
FAQ
Best Practices
Overview
Migrate data to OSS
Migrate data between OSS
Migrate data between buckets in OSS
Migrate data sources from a third party to OSS
Seamlessly migrate data from Amazon S3 to Alibaba Cloud OSS
Use ossimport to migrate data
Migrate data from HDFS to OSS
Upload data to OSS through Web applications
Overview
Use PostObject to upload data to OSS through Web applications
Use PostObject on the web to upload objects
Add signatures on the client by using JavaScript and upload data to OSS
Add signatures on the server for object upload
Add signatures on the server, configure upload callback, and directly transfer data
Overview
Python
Java
Go
.NET
PHP
Ruby
Application server
Set up direct data transfer for mobile apps
Set up upload callback for mobile apps
Data processing and analysis
Use MaxCompute to build a data warehouse based on OSS
Use HDP 2.6-based Hadoop to read and write OSS data
Data backup and recovery
Back up buckets
Use ECS instances to configure reverse proxy for access to OSS
Use an ECS instance that runs Windows to configure a reverse proxy for access to OSS
Use an ECS instance that runs CentOS to configure a reverse proxy for access to OSS
Use an ECS instance that runs Ubuntu to configure a reverse proxy for access to OSS
Terraform
Overview
Use Terraform to manage OSS
Use CDN to accelerate access to OSS
Create HLS streams based on OSS
Use Function Compute to download multiple objects as a package
OSS performance and scalability best practices
Configure lifecycle rules to manage object versions
Check data transmission integrity by using CRC-64
Sensitive data protection
Console User Guide
Overview
Sign up for OSS
OSS console
Use Alibaba Cloud accounts to log on to the OSS console
Use RAM users' credentials to log on to the OSS console
Overview of the OSS console
Set OSS paths
Manage buckets
Bucket overview
Create buckets
Access control
Modify bucket ACLs
Configure CORS rules
Configure hotlink protection
Manage a domain
Map custom domain names
Enable transfer acceleration
Bind accelerate endpoints
Map accelerated domain names
Host SSL certificates
Basic settings
Configure the pay-by-requester mode
Configure bucket inventory
Configure server-side encryption
Configure bucket tagging
Configure static website hosting
Configure lifecycle rules
Configure retention policies
Back-to-origin rules
Overview
Basic configurations of mirroring-based back-to-origin
Special configurations of mirroring-based back-to-origin
Configure redirection-based back-to-origin
Configure event notification rules
Delete buckets
Redundancy for fault tolerance
Configure CRR
Configure SRR
Configure versioning
Manage logs
Configure logging
Configure real-time log query
Configure log analysis
Data Processing
Image processing
Configure image styles
Configure source image protection
Configure decompression rules for ZIP packages
View resource usage
Upload, download, and manage objects
Overview
Upload objects
Create directories
Search for objects
Configure ACL for objects
Modify the storage class of objects
Configure bucket policies to authorize other users to access OSS resources
Download objects
Share objects
Configure scheduled backup
Configure object metadata
Restore objects
Rename directories or objects
Use OSS Select
Configure symbolic links
Configure object tagging
Delete objects
Delete directories
Manage parts
Configure OSS DDoS protection
Troubleshooting
Error responses
Obtain request IDs
HTTP 203 status code
HTTP 400 status code
HTTP 403 status code
HTTP 404 status code
HTTP 405 status code
HTTP 409 status code
HTTP 411 status code
HTTP 412 status code
HTTP 416 status code
HTTP 424 status code
HTTP 500 status code
HTTP 503 status code
White Paper
Security and compliance
Overview
Access control
Data encryption
Monitoring and audit
Disaster recovery
Data retention compliance
Other features
OSS performance optimization
Overview
Recommended design patterns
Guidelines for application performance optimization
Overview of Alibaba Cloud storage services
Overview
Object Storage Service
Apsara File Storage NAS
Block Storage
Cloud Paralleled File System
Apsara File Storage for HDFS
Tablestore
Cloud Storage Gateway
Optimization of Alibaba Cloud storage services
Overview
Data storage requirement assessment
Alibaba Cloud storage service selection
OSS optimization
Block Storage optimization
Continuous storage optimization
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