检测到您已登录华为云国际站账号，为了您更好的体验，建议您访问国际站服务网站 https://www.huaweicloud.com/intl/zh-cn
不再显示此消息
检测到您已登录华为云国际站账号，为了您更好的体验，建议您访问国际站服务网站 https://www.huaweicloud.com/intl/zh-cn
不再显示此消息
What Can I Do If the Partition Capacity Fails to Be Expanded Using growpart After the EVS Disk Capacity Is Expanded? Symptom After the capacity of an EVS disk is expanded, running the growpart command to expand the partition capacity fails.
Before You Start Welcome to Elastic Volume Service API Reference. Elastic Volume Service (EVS) offers scalable block storage for cloud servers.
Common Application Scenarios and Usage Instructions of SCSI EVS Disks BMSs support only SCSI EVS disks. Shared SCSI EVS disks: Shared SCSI EVS disks must be used together with a distributed file system or cluster software.
Disk Encryption EVS enables you to encrypt data on newly created disks as required. It uses the industry-standard XTS-AES-256 cryptographic algorithm and keys to encrypt EVS disks.
For details, see section "EVS Snapshot (OBT)" in the Elastic Volume Service Product Description. Parent topic: Backup and Restoration
How Do I Handle a Network Failure After Services Are Switched from a Windows BMS Booted from an EVS Disk to an HA BMS? Scenarios After services are switched from a Windows BMS booted from an EVS disk to an HA BMS, the HA BMS cannot connect to the network.
For details, see Backing Up EVS Disks and Creating an EVS Snapshot respectively. You have logged in to the server. For how to log in to an ECS, see Logging In to an ECS. For how to log in to a BMS, see Logging In to a BMS.
You can use the following methods to improve your disk performance: RAID Array Creation with EVS Disks Using LVM to Manage EVS Disks Parent topic: Performance
For details, see Backing Up EVS Disks and Creating an EVS Snapshot respectively. You have logged in to the server. For how to log in to an ECS, see Logging In to an ECS. For how to log in to a BMS, see Logging In to a BMS.
SDK Overview This document lists the SDK versions provided by Elastic Volume Service (EVS) and the addresses for obtaining the latest SDK versions. SDK List Table 1 lists the SDKs supported by EVS.
Before an EVS disk is attached, the system will call the reserveVolume EVS API to check whether the disk can be attached. If it can be attached, the system then changes the disk status to attaching to avoid conflicts with other operations. Parent topic: General
Setting an Alarm Rule Scenarios You can set alarm rules for EVS to customize the monitoring scope and notification policies and stay aware of the EVS disk statuses.
Multiple servers can access the same shared EVS disk at the same time. A shared EVS disk can be attached to a maximum of 16 servers, including ECSs or BMSs.
Currently, the capacity of an EVS disk cannot be transferred to another disk. Multiple EVS disks cannot be combined into a single, larger disk, either. Common Scenarios You want to expand the system disk capacity, but purchased a new data disk.
Will My EVS Disk Be Unsubscribed from or Deleted When I Unsubscribe from or Delete Its Server? For pay-per-use disks: If such disks are separately purchased and are attached, the system will prompt you whether to delete them when you delete the server.
Identity Authentication and Access Control You can access EVS through the EVS console, APIs, or SDKs. No matter which method you choose, you actually use REST APIs to access EVS. EVS APIs support only authenticated requests.
Fault Recovery EVS offers a variety of fault recovery methods. For details, Table 1. Table 1 Fault recovery Method Description Reference EVS backup CBR provides the cloud disk backup function, which allows you to back up EVS disks while the servers are running.
Parent topic: Elastic Volume Service
Why Do Some of My EVS Disks Not Have WWN Information? How Can I Migrate Data from an EVS Disk? What Are the Differences Between System Disks and Data Disks? How Can I Upload Files to My EVS Disk? Billing Will I Be Billed If I Have Purchased an EVS Disk But Not Used It?
An EVS system disk can be as large as 1 TiB (1,024 GiB). You can expand the capacity of a system disk to up to 1 TiB. An EVS data disk can be as large as 32 TiB (32,768 GiB).
