Change History

Released On	Description
2024-09-12	Updated the following content: Optimized the document titles and contents for easy understanding. Major updates are as follows: Optimized the tag rules in section Adding a Tag. Moved the snapshot status descriptions to section Checking EVS Snapshot Details. Moved the disk status descriptions to section Viewing EVS Disk Details. Updated the content in section Notes and Constraints. Combined sections "Detaching a Data Disk" and "Detaching a System Disk" into one section Detaching an EVS Disk.
2024-05-22	Updated the following content: Changed the IOPS burst limit of a common I/O disk to 1,000.
2024-04-19	Updated the following content: Deleted the content related to Ultra-high I/O (Latency optimized) and High I/O (Performance optimized I) EVS disks.
2024-02-18	Updated the following content: Added the content describing the relationship between disk performance and data block size, added the description that Ultra-high I/O (Latency optimized) and High I/O (Performance optimized I) disks can no longer be created, and modified the IOPS burst limit of an Ultra-high I/O disk to 10,000 in section Disk Types and Performance. Added the description of the maximum sizes that a system disk and a data disk can be expanded to in section Expansion Overview. Added the notes that Ultra-high I/O (Latency optimized) and High I/O (Performance optimized I) disks can no longer be created in sections Notes and Constraints and Creating an EVS Disk.
2023-12-13	Updated the following content: Added descriptions of the General Purpose SSD disk type in sections Disk Types and Performance, Notes and Constraints, and Creating an EVS Disk.
2023-11-01	Updated the following content: Updated or added certain permission restrictions in sections Managing Encrypted EVS Disks, Managing EVS Disk Backups, Managing Encrypted EVS Disks, and Managing Shared EVS Disks.
2023-07-14	Updated the following content: Added the formula used to calculate the disk throughput in Disk Types and Performance.
2023-06-12	This issue incorporates the following change: Added screenshots in sections Creating an EVS Disk, Attach an EVS Disk, Viewing EVS Disk Details, Managing EVS Disk Backups, Creating an EVS Snapshot, How Can I View My Disk Details?, Can I Change the Disk Type, Device Type, or Sharing Attribute of My Disk?, Why Can't I Attach My Disk to a Server?, and How Can I Handle a Slowdown in Disk Read/Write Speed or Increased I/Os?.
2023-03-13	This issue incorporates the following changes: Modified the following content: Document content has been supplemented in sections What Is EVS?, Disk Types and Performance, Managing Encrypted EVS Disks, Managing EVS Disk Backups, Managing EVS Snapshots, Permissions, Creating an EVS Disk, Attach an EVS Disk, Initialize an EVS Data Disk, Expansion Overview, Expanding Capacity for an In-use EVS Disk, Expanding Capacity for an Available EVS Disk, Extending Disk Partitions and File Systems (Windows Server 2008), Partition and File System Extension Preparations (Linux), Extending Partitions and File Systems for System Disks (Linux), Detaching an EVS Disk, Deleting an EVS Disk, Managing EVS Disk Backups, EVS Snapshot Overview, Creating an EVS Snapshot, Deleting an EVS Snapshot, Rolling Back Disk Data from a Snapshot, Creating a Disk from a Snapshot, How Do I Start Using a Newly Created Disk?, Will My Disk Data Be Lost After I Expand the Disk Capacity?, Do I Need to Detach an EVS Disk Before Expanding Its Capacity?, Can I Attach a Disk to a Server in a Different AZ?, and How Can I Attach a Shared Disk to Multiple Servers?. Added the following content: Added sections EVS Three-Copy Redundancy, Notes and Constraints, EVS Concepts, Initialize an EVS Data Disk, Viewing EVS Disk Details, Checking EVS Snapshot Details, How Do I Change the Name of My Disk?, Managing EVS Quotas, Summary, Can I Change the Disk Type, Device Type, or Sharing Attribute of My Disk?, How Can I Migrate Data from an EVS Disk?, What Does the "reserveVolume" Trace Mean in CTS?, How Can I Upload Files to My EVS Disk?, Can I Use Backups or Snapshots Created Before Capacity Expansion to Restore Data on Expanded Disks?, How Can I Allocate Newly Added Space to a New Partition?, How Can I Allocate Newly Added Space to an Existing Partition?, Why Can't I Expand Capacity for My Disk?, How Do I Extend the Root Partition of a Quickly Provisioned BMS?, Why Can't I Attach My Disk to a Server?, Can I Change the Function of a System Disk or Data Disk Created Along with a Server?, How Do I Obtain My Disk Device Name in the ECS OS Using the Device Identifier Provided on the Console?, Deletion, What Can I Do If the Capacity of My Disk Reaches the Maximum But I Still Need More Space?, Can I Transfer the Data Disk Capacity to a System Disk?, Performance, Snapshot, and Backup.
2023-02-20	Modified the following content: Added "Disk IOPS Calculation Formula" and "Disk Burst Capability and Principles" in Disk Types and Performance.
2023-01-16	Modified the following content: Modified content about Extreme SSD disks in sections What Is EVS?, Disk Types and Performance, Initialize an EVS Data Disk, Creating an EVS Disk, What Should I Do If My Disk Capacity Exceeds 2 TiB After Expansion?, How Can I Add a Data Disk to an Existing Server?, and Recording EVS Operations Using CTS. Modified content in sections Managing Encrypted EVS Disks and Expansion Overview based on the audit review comments.
2022-12-15	Added the following content: Added the EVS operations that can be recorded in Recording EVS Operations Using CTS. Added some FAQs. Optimized certain descriptions.
2022-07-15	Added the following content: Added content about Extreme SSD disks in Disk Types and Performance and Creating an EVS Disk.
2022-04-15	Added the following content: Added content about EVS permissions in Permissions and Permissions Management.
2021-12-27	Modified the following content: Optimized the descriptions of the impacts brought by an unavailable CMK in Managing Encrypted EVS Disks.
2020-08-15	Added the following content: Added CBR description in Managing EVS Disk Backups and Managing EVS Disk Backups.
2019-04-09	Accepted in OTC-4.0/Agile-04.2019.
2019-02-15	Modified the following content: Deprecated the content of EVS replication as EVS replication APIs have been deprecated. Modified the following content: Updated the screenshot of non-encrypted disks in Creating an EVS Disk based on the tag parameter changes made on the EVS console.
2018-11-30	Added the following content: Added contents about bootable disks, system disks, and data disks in Attaching a Non-Shared Disk, Detaching an EVS Disk, and Detaching an EVS Disk.
2018-05-14	Modified the following content: Modified the reviewed issues.
2018-02-28	Added the following content: Added Expanding EVS Disks in a Replication Consistency Group. Modified the following content: Modified the EVS replication flowchart and added some contents.
2018-02-24	Modified the following content: Modified Configuring a Virtual IP Address for the Server. Modified the reviewed issues.
2018-01-31	Added the following content: Added Configuring a Virtual IP Address for the Server.
2018-01-25	Modified the following content: Modified the reviewed issues. Changed a prerequisite for performing planned migrations and reprotections to that only production servers need to be stopped but EVS disks no longer need to be detached.
2018-01-19	Modified the following content: Added Managing EVS Transfers.
2017-12-01	Modified the following content: Modified the reviewed EVS replication issues.
2017-11-30	Modified the following content: Modified the reviewed EVS replication issues.
2017-10-28	Added the following content: Added descriptions about EVS replication.
2017-10-25	Modified the following content: Made relevant modifications in Rolling Back Disk Data from a Snapshot according to the snapshot rollback changes made on the console.
2017-10-20	Modified the following content: Changed the maximum capacity of a system disk to 1,024 GiB in Creating an EVS Disk. Added the description that a maximum of 7 snapshots can be created for an EVS disk in Creating an EVS Snapshot.
2017-10-13	Added the following content: Enabled the function of rolling back data from snapshots and added the relevant content in the document. Added the content of searching EVS resources by tags in Searching for Disks by Tag. Modified the following content: Modified the reviewed issues in Creating an EVS Disk.
2017-09-30	Added the following content: Added support for detaching in-use EVS disks in Detaching an EVS Disk. Added operations in Expanding Capacity for an In-use EVS Disk. Added the ECS types and OSs supported by SCSI EVS disks. Modified the following content: Modified the number of data disks that can be attached to an ECS to 23 in Attaching a Shared Disk.
2017-09-28	Modified the following content: Adjusted the outline of the document. Modified the reviewed issues in the document.
2017-09-08	Added the following content: Added support for the disk creation using a backup shared by another tenant in Creating an EVS Disk. Modified the following content: Removed the Restore Data button from the EVS console, and deleted or modified the related descriptions from the document.
2017-08-22	Modified the following content: Modified the reviewed issues in the document.
2017-07-30	Added the following content: Added support for the EVS snapshot function. Added support for the TMS tag function. Added support for the High I/O (Performance optimized I) and Ultra-high I/O (Latency optimized) EVS disk types. Added support for the multi-project function.
2017-06-15	Added the following content: Added the description that SCSI EVS disks can only be attached to BMSs.
2017-06-08	Modified the following content: Modified the description of detaching EVS disks.
2017-06-06	Added the following content: Added a notice on using ECS groups and SCSI reservations simultaneously in Managing Shared EVS Disks.
2017-06-05	Added the following content: Added the description of the relationship between ECS groups and SCSI reservation in Managing Shared EVS Disks. Modified the following content: Modified the disk attachment description from attaching EVS disks to ECSs to attaching EVS disks to servers. Servers can be either ECSs or BMSs.
2017-06-01	Added the following content: Added the description that shared EVS disks cannot be created from the backups of system disks. Added the restriction on detaching shared EVS disks.
2017-05-22	Modified the following content: Made modifications in Creating an EVS Disk according to the adjustments made on the Create Disk page. Adjusted the sequence of parameters Disk Name and AZ. Adjusted the location of parameter Create from backup.
2017-05-05	Added the following content: Added SCSI and VBD to the glossary.
2017-04-30	Added the following content: Added Windows public images and ECS types supported by shared SCSI EVS disks.
2017-03-30	Added the following content: Added the Rolling back and Rollback failed statuses for EVS disks. Added support for SCSI EVS disks in Creating an EVS Disk. Added support for shared EVS disks in Creating an EVS Disk.
2017-02-08	Modified the following content: Modified the description for parameters Create Xrole and Xrole Name:EVSAccessKMS in Creating an EVS Disk.
2017-02-03	Added the following content: Added the description that batch creation is not supported when EVS disks are created from backups in Creating an EVS Disk. Added the description for parameters Create Xrole and Xrole Name:EVSAccessKMS in Creating an EVS Disk. Modified the following content: Changed the name of parameter Disk encryption to Encryption in Creating an EVS Disk.
2017-01-23	Added the following content: Added the impact on encrypted EVS disks caused by the disabled and schedule deleted CMKs.
2017-01-20	Added the following content: Added the key encryption function of EVS disks.
2016-10-28	Added the following content: adds a description of the relationship between shared disks and EVS disks. Added examples in the Example Value column in Table 2-1 in Creating an EVS Disk. Modified the following content: Updates the format of Steps in the document. Updated the figure for Step 9 in Initializing a Windows Data Disk (Windows Server 2008). Changes the value of Number of Cloud Server Mount Points from 11 to 14 in the EVS row of Table 3-1. Updates the NOTE descriptions in Step 13 of "Expand Capacity of an EVS Disk (Windows)" and Step 12 of "Expand Capacity of an EVS Disk (Linux)": indicating that the new disks must be initialized. Added double quotation marks to "Creating a VBS Backup" to indicate quotation in Managing EVS Disk Backups. Updated the description of EVS disk specifications to be consistent with descriptions in previous sections in Disk Types and Performance. Updated the section names in NOTE to be consistent with section 4.10. Deleted the following content: Deleted the Monitored Object column from Table 1-1 in EVS and Other Services. Deletes the unnecessary table of Mapping between mount points and EVS disk names. Deletes the comma before "or Restoration failed" in the section of Delete an EVS disk. Deletes sections 4.1, 4.2, and 4.3 from FAQs, because the three sections have been contained in the Overview chapter.
2016-09-23	Added the following content: Adds the details about three disk types. Adds information about how to handle deletion or restoration failures to the notice for the section of Delete an EVS Disk. Modified the following content: Updates the link names in step 20 and the note in the section of Expand Capacity of an EVS Disk (Linux). Deleted the following content: Deletes part of the AZ parameter description from the table.
2016-09-18	This issue is the first official release.

last updated: 2025-01-02 08:20 UTC - commit: 8e4e7658ad5c80c8bdb42b3ad9cf5c8b4bb97029