# Change History

Release Date | What's New
--- | ---
2021-10-14 | Updated the following content: Updated the screenshot of creating an SFS Turbo file system.
2021-09-11 | Updated the following content: Added FAQ How Is the SFS Turbo Capacity Quota Calculated?
2021-07-21 | Updated the following content: Modified performance metrics of SFS Turbo file systems.
2021-04-30 | Updated the following content: Added descriptions of SFS Turbo file systems.
2020-12-30 | Updated the following content: Modified the method of calculating the maximum number of files supported by SFS Turbo in section "Restrictions and Limitations."

2020-12-17

Updated the following content:

- Optimized the descriptions of performance, bandwidth, and maximum capacity of an SFS Capacity-Oriented file system.
- Added section "Migrating Data Between an SFS Capacity-Oriented File System and an SFS Turbo File System."

2020-11-30

Updated the following content:

- Optimized the description of the Security Group parameter in section "Creating a File System."
- Optimized the description in section "Does the Security Group of VPC Affect SFS?"
- Added the description of mounting file systems to BMSs.

2020-05-06

Updated the following content:

- Deleted section "Mounting an NFS File System to ECSs (Windows)."
- Deleted the description of Windows-related operations from section "Mounting a File System Automatically."
- Modified the description in section "Mounting a File System Automatically."
- Deleted the description of Windows-related operations from section "Unmounting a File System."
- Deleted Windows-related operations from section "Troubleshooting."
- Deleted Windows-related description from section "FAQs."
- Modified the description in section "File System Resizing."

2020-03-06

Updated the following content:

- Deleted section "Backup" and related description.
- Deleted section "Subscription."
- Modified the description in section "File System Resizing."

2019-10-17

Updated the following content:

- Change the maximum capacity of an SFS Turbo file system.
- Deleted the description about auditing.
- Added POSIX and DHCP to section "Basic Concepts."

2019-09-30 | First time that SFS Turbo file systems go online

2019-06-12

Updated the following content:

- Added section "Quotas."
- Added the "Failure of Mounting an NFS File System to a Windows IIS Server" section in the "Troubleshooting" chapter.
- Adjusted the structure of chapter "Getting Started."
- Added monitoring indicators to section "Monitoring."
- Added section "Regions and AZs."

2019-05-21

Updated the following content:

- Modified "Follow-Up Operation" in section "Mounting an NFS File System to ECSs (Windows)."
- Modified the table "Parameters for file system mounting" in section "Mounting an NFS File System to ECSs (Linux)".

2019-05-09 | Updated the following content: Accepted in OTC-4.0/Agile-06.2019.

2019-03-30

Updated the following content:

- Added "What Resources Does SFS Occupy?" in "FAQs."
- Moved sections "Mounting a File System Automatically" and "Enabling or Adding a Software Repository" under "More Resources" to "Getting Started". Moved section "Supported Operating Systems" to "Introduction."
- Merged section "Permissions" into section "Accessing SFS."
- Modified the names of subsections in the "Management" section.
- Deleted section "Process."

2019-01-23 | Updated the following content: Accepted in OTC 4.0/Agile-02.2019.

2018-12-30

Updated the following content:

- Added the description of mounting parameters for performance optimization and modified the command in step 2 in section "Mounting an NFS File System to ECSs (Linux)."
- Added cause 4 in section "Mounting a File System Times Out."
- Modified the field description and commands for operations in Windows ECSs in section "Mounting a File System Automatically."
- Modified step 2 in section "Viewing Monitoring Statistics."
- Changed section names "Mounting a File System to ECSs (Linux)" and "Mounting a File System to ECSs (Windows)" to "Mounting an NFS File System to ECSs (Linux)" and "Mounting an NFS File System to ECSs (Windows)."

2018-06-11 | Updated the following content: Accepted in OTC 3.1.

2018-06-04

Updated the following content:

- Optimized and modified the description of encryption rights.
- Optimized remarks about parameter VPC.
- Changed description of whether to back up file systems using dump.

2018-05-28

Updated the following content:

- Optimized and modified the description of encryption rights.
- Added section "Mounting a File System Automatically."
- Optimized remarks about parameter VPC.
- Optimized the description of parameter Priority.

2018-05-21

Updated the following content:

- Modified the flowchart.
- Optimized parameter description of Authorized Address/Segment.
- Added the procedure for configuring the DNS in Windows.

2018-05-07

Updated the following content:

- Optimized and corrected the usage of keys.
- Added the description that SFS does not support replication.
- Modified the flowchart.
- Optimized parameter description of IP address/segment and priority and added operation screenshots.
- Modified the description of ports.

2018-04-24

Updated the following content:

- Added section "File System Encryption" and section "Managing Encrypted File Systems."
- Deleted section "What Scenarios Does SFS Apply To" from "FAQs."

2018-04-12

Updated the following content:

- Deleted the description about the high reliability of file systems from sections "SFS", "Application Scenarios", and "FAQs."
- Added encryption to the parameter description in section "Creating a File System."
- Added section "Managing VPCs."
- Updated section "Mounting a File System Times Out."
- Added the version description of operating systems to which SFS file systems can be mounted.
- Added the application example of HPC.
- Added the question "What Is the Maximum Capacity of a File?" in "FAQs."
- Added section "Mounting a File System to ECSs (Windows)."

2018-02-09

Updated the following content:

- Updated screenshots in section "Creating a File System."
- Updated descriptions and screenshots in section "Deleting a File System."

2018-01-19

Updated the following content:

- Updated section "SFS" and section "Deleting a File System."
- Updated section "Application Scenarios" and section "Limitations and Constraints."

2017-11-30

Updated the following content:

- Added the secondary confirmation for deleting a file system in section "Deleting a File System."
- Updated the screenshots based on changes in the GUI.

2017-10-20

Updated the following content:

- Modified the value ranges of file system capacities in section "Creating a File System" and section "File System Resizing."
- Modified the command outputs based on different operating systems in section "Mounting a File System to ECSs" and section "Media Processing."

2017-09-29

Updated the following content:

- Added supported operating systems in section "Mounting a File System to ECSs."
- Added chapter "Typical Applications."
- Added chapter "Troubleshooting."
- Added supported operating systems in section "Supported Operating Systems."

2017-09-18

Updated the following content:

- Added a description of enabling or adding software repositories for NFS client installation.
- Added section 5.3 Enabling or Adding a Software Repository.

2017-08-26

Updated the following content:

- Added the default export option for NFSv3.
- Deleted sections 4.8 and 4.11 in the FAQs.
- Added a question about how to check whether a file system is available.

2017-08-18

Updated the following content:

- Deleted unnecessary descriptions of NFS.
- Changed "for obtaining" to "to obtain".
- Changed "the creation to complete" to "the application to complete the creation".
- Changed "You are returned back" to "The application returns back".
- Added the command of querying the NFS software package in Debian.
- Deleted the NOTE for the mount command.
- Modified the description of a failure in shrinking. For details, see "Rules for Resizing".
- Changed "Raw Capacity" to "Current Capacity".
- Changed "Linux-based ECSs" to "Only Linux-based ECSs".
- Added a description of applying for a higher quota.
- Explained how to save file systems in more details.
- Explained the data durability in more details.
- Deleted the operating systems not supported by SFS file systems.
- Explained why to configure DNS and provided the DNS server IP addresses.

2017-07-29 | This issue is the first official release.