Getting Started with EVS
Getting Started with EVS
Elastic Volume Service (EVS) provides highly reliable, high-performance persistent block storage for Huawei Cloud servers like Elastic Cloud Servers (ECSs) and Bare Metal Servers (BMSs).
Elastic Volume Service (EVS) provides highly reliable, high-performance persistent block storage for Huawei Cloud servers like Elastic Cloud Servers (ECSs) and Bare Metal Servers (BMSs).
Getting Started with EVS in 4 Steps
Getting Started with EVS in 4 Steps
Sign Up for Huawei Cloud
Open the Huawei Cloud official website, click Sign Up, and complete the registration as prompted.
Buy EVS Disks
System disks are purchased together with cloud servers and are attached and initialized automatically.
Data disks can be purchased together with cloud servers or separately. Those purchased together with cloud servers are automatically attached to servers.
Attach Separately Purchased Disks to Servers
You need to manually attach separately purchased data disks to cloud servers.
Note that an EVS disk must be attached to a cloud server in the same AZ of the same region.
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Initialize Data Disks
You must initialize the data disks before they can be used regardless of if they were purchased together with cloud servers or separately. Initializing a data disk includes partitioning the disk, creating file systems on partitions, mounting the partitions, and configuring them to mount at startup.
Best Practices
Best Practices
Using LVM to Manage EVS Disks
By adding a logical layer between EVS disks and file systems, LVM allows EVS disk partitions to be split up into logical volumes that can then be flexibly partitioned as needed for upper layer file systems.
With LVM, a file system can be created on top of multiple EVS disks and can be easily resized as needed. In this way, the file system size is no longer limited by the underlying disk capacity.
Extending Disk Partitions and File Systems (Windows Server 2016)
A capacity expansion in Windows includes two steps: expand the disk capacity on the console and extend the partition and file system in the server OS.
After a disk is expanded on the console, the disk size is enlarged, but the additional space cannot be used directly. You must log in to the server and allocate the space added. You can add the additional space to an existing drive or create a new drive with the additional space.
Extending Partitions and File Systems for Data Disks (Linux)
A capacity expansion in Linux includes two steps: expand the disk capacity on the console and extend the partition and file system in the server OS.
After a disk is expanded on the console, the disk size is enlarged, but the additional space cannot be used directly. You must log in to the server and allocate the space added. You can add the additional space to an existing partition or create a new partition with the additional space.