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    Cloud Storage Gateway:Release notes

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    Cloud Storage Gateway:Release notes

    Last Updated:Jun 16, 2026

    Cloud Storage Gateway (CSG) release history, covering new features, improvements, and changes in each version.

    Version

    Release date

    Description

    References

    v2.0.3

    January 2, 2025

    • Improvements: Enhanced the stability of file gateways.

    None

    v2.0.2

    December 18, 2024

    New feature: Now supports the OSS V4 signature protocol for new shares created on the public cloud.

    Upgrade from Signature V1 to Signature V4

    v2.0.1

    November 13, 2024

    Improvements: Enhanced the stability of file gateways.

    None

    v2.0.0

    October 11, 2024

    New feature: Introduced cross-zone high-availability (HA) file gateways.

    Use a cross-zone high-availability file gateway

    v1.10.7

    August 16, 2024

    Improvements: Enhanced the stability of file gateways.

    None

    v1.10.6

    May 24, 2024

    Improvements: Enhanced the stability of file gateways.

    None

    v1.10.4

    April 1, 2024

    New feature: You can now configure protocol security policies for SMB shares.

    Configure SMB security levels

    v1.10.3

    February 2, 2024

    Improvements:

    • Optimized express synchronization performance during the full synchronization phase.

    • Reduced API calls to Message Service (MNS) by using its batch deletion interface.

    None

    v1.10.0

    November 24, 2023

    Improvements:

    • Improved directory traversal performance for NFS mount points under heavy load.

    • Improved read and write performance for small files in high-concurrency scenarios.

    None

    v1.9.6

    July 12, 2023

    Improvements:

    • You can now select ESSD PL2 and ESSD PL3 as cache disk types when you create a file gateway.

    • Optimized gateway performance in specific scenarios.

    None

    v1.9.4

    September 6, 2023

    Improvements:

    • Optimized the interaction between file gateways and Archive-tier OSS buckets to reduce unnecessary object restores.

    • File gateways now default to using an internal endpoint to access an OSS bucket in the same region.

    None

    v1.9.3

    June 30, 2023

    New feature: For file gateways joined to an Active Directory (AD) domain, you can now configure user group permissions on the console.

    Add Active Directory domain users and groups to an SMB share

    v1.9.2

    May 10, 2023

    • New feature: CloudMonitor now provides upload queue metrics for file gateways.

    • Improvements: Optimized replaying rename operations and uploading small files to OSS.

    Integrate with CloudMonitor

    v1.9.1

    March 15, 2023

    New feature: You can now configure express synchronization for file gateways in the China (Hohhot) and China (Ulanqab) regions.

    None

    v1.8.6

    October 26, 2022

    On-premises file gateways can now connect with SandStone object storage.

    None

    v1.8.5

    September 2, 2022

    Improvements: Optimized the SMB user management experience for file gateways joined to an Active Directory (AD) domain with a large number of users.

    None

    v1.8.4

    July 15, 2022

    Improvements: When you expand the cache disk capacity for a file gateway, the gateway now allocates metadata space proportionally to the added capacity.

    None

    v1.8.2

    May 6, 2022

    Improvements: You can now expand the cache disk capacity for shares on on-premises file gateways.

    None

    v1.8.1

    April 11, 2022

    • New feature: For shares created in version 1.8.0 and later, you can expand the cache disk capacity without I/O interruptions.

    • Improvements: You can now create a share when creating a file gateway.

    None

    v1.8.0

    January 21, 2022

    Improvements: Significantly improved the reverse synchronization performance of file gateways.

    None

    v1.7.5

    December 15, 2021

    • Security enhancements: Disabled unnecessary ports.

    • Improvements: Optimized the deletion process for block gateway volumes.

    None

    v1.7.4

    October 14, 2021

    Improvements: Enhanced the capabilities of CloudMonitor.

    None

    v1.7.3

    October 14, 2021

    Improvements:

    • Optimized the upload efficiency for versioned OSS buckets.

    • Improved the read efficiency for large files.

    None

    v1.7.2

    July 21, 2021

    Improvements: Optimized the I/O performance of NFS shares for file gateways.

    None

    v1.7.1

    May 20, 2021

    New feature: Added a direct-read-from-OSS option for file gateways.

    None

    v1.7.0

    April 2, 2021

    New features:

    • You can now expand the cache disk capacity for a file gateway share.

    • The file gateway console now displays NFS client information.

    • Added support for server-side SM4 encryption for file gateway shares.

    • File gateways now display the cache disk path for each share.

    • File gateways now support mounting subdirectories by using the NFSv3 protocol.

    None

    v1.6.1

    January 5, 2021

    Improvements: Optimized the reverse synchronization performance of file gateways.

    None

    v1.6.0

    November 27, 2020

    New features:

    • Now supports IPv6 for mounting NFS shares, SMB shares, and iSCSI volumes in the China (Hohhot) region.

    • You can now change the AccessKey ID and AccessKey secret for an on-premises gateway.

    Improvements:

    • Optimized the read and write performance of file gateway shares.

    • Increased the file system capacity for file gateways: 128 TB for Basic gateways, 256 TB for Standard gateways, 512 TB for Enhanced gateways, and 1 PB for Performance Optimized gateways.

    Modify the AccessKey ID and AccessKey secret

    v1.5.2

    October 21, 2020

    Improvements:

    • Improved the efficiency of metadata defragmentation on the local cache of file gateways.

    • Improved the efficiency of OSS access for file gateways and block gateways.

    None

    v1.5.1

    August 27, 2020

    New features:

    • Reduced the file system's memory footprint.

    • Now supports authorization using a Resource Access Management (RAM) service-linked role.

    Use service-linked roles for CSG

    v1.5.0

    June 30, 2020

    New features:

    • Express synchronization groups can now display the number of active messages.

    • The replication mode feature for file gateways is now generally available.

    Download data

    Improvements:

    • Enhanced the consistency check for file rename operations on file gateways.

    • Enhanced the download performance of the file gateway replication mode.

    • Enhanced the stability of NFS protocol access for file gateways.

    • Optimized the load time for large-capacity shared file systems on file gateways.

    New region: China (Heyuan)

    v1.4.0

    April 10, 2020

    New features:

    • The file gateway replication mode now supports data download. (whitelist required)

    • You can now dynamically enable or disable replication mode. (whitelist required)

    • You can now dynamically add or remove directories in replication mode. (whitelist required)

    Improvements:

    • Added support for cross-border express synchronization.

    • Added a note about UTF-8 filename validation for NFS to the usage instructions for file gateways.

    • File gateways can now display the status of upload and download queues.

    • You can now reset the password for an on-premises gateway.

    • On-premises gateways now support log collection with Simple Log Service.

    New region: Japan (Tokyo)

    v1.3.0

    March 6, 2020

    New features:

    • File gateways now support transfer acceleration.

    • Enhanced the replication mode for file gateways to automatically download data from the cloud. (whitelist required)

    Improvements:

    • Cloud Storage Gateway (CSG) is now manageable via an API.

    • CSG is now integrated with CloudMonitor.

    • Optimized large file uploads for file gateways.

    • You can now purchase public bandwidth for gateways.

    New regions:

    • Malaysia (Kuala Lumpur)

    • US (Silicon Valley)

    • US (Virginia)

    v1.2.0

    January 8, 2020

    New features:

    • Now supports bring-your-own-key (BYOK) for at-rest encryption on file gateways. This feature is exclusive to Enhanced and Performance Optimized gateways and requires whitelisting.

    • File gateways now support aggregating multiple OSS buckets into a single share. (This feature is available only for Enhanced and Performance Optimized gateways.)

    Use multi-bucket aggregation

    Improvements:

    • Optimized NFSv4 support on file gateways to reduce redundant OSS uploads by merging multiple write operations. Mounting with NFSv3 is disabled when this optimization is active.

    • Optimized the NFS client side of express synchronization to ensure that metadata updates are discovered quickly.

    v1.1.0

    December 26, 2019

    New features:

    • File gateways now support express synchronization. This feature quickly detects data changes in OSS without requiring a full scan, enabling write-once-read-many collaboration across multiple gateways.

    • File gateways now support Windows access-based enumeration (ABE). You can use this feature with an Active Directory (AD) domain to isolate data access for different user accounts.

    Improvements:

    • You can now upgrade Cloud Storage Gateway (CSG) specifications.

    • Added support for auto-renewal for subscription gateways.

    New regions:

    • China (Chengdu)

    • Indonesia (Jakarta)