Scenario
After creating the EVS, you need to mount it to cloud server or physical server for use as a data disk.
There are usually two types of mounting EVS, one is to mount non-shared EVS, and the other is to mount shared EVS.
Mount Non-shared EVS
Restriction and Limitations
· A non-shared EVS can only be mounted to one cloud server or physical server.
· When mounting a non-shared EVS, the mounted instance must be in the same region as the EVS.
· Extreme SSD type EVS can only be mounted to non general purpose cloud server with at least 16 vCPUs and Gen 6 or above, and only a maximum of 3 Extreme SSD type EVSs are allowed to be mounted to the cloud server.
Procedure
Users can mount from the two page entrances of cloud server and EVS by performing the following steps:
Mount from Cloud Server Page
Log in to the console.
Click in the upper left corner of the control center to select a region, here we select Hong Kong (China) 2.
Click to select Computing > Elastic Cloud Server to enter the cloud server list page.
Click the name of the Elastic Cloud Server that you want to mount the EVS to enter the Elastic Cloud Server details page.
Click the EVS tab, and in the EVS page, click the Mount Disk button to bring up the disk mounting window.
Select the EVS to be mounted in the jump window and click OK to mount the EVS for the Elastic Cloud Server. You can see the details of the mounted EVS on the EVS details page of cloud server.
Mount from EVS Page
Log in to the console.
Click in the upper left corner of the control center to select a region, here we select Hong Kong (China) 2.
Click Storage > EVS.
In the row where the EVS is to be mounted, click Mount.
In the Mount Disk dialog box that pops up, select the cloud server or physical server where the disk is to be mounted.
Click OK. Return to the Disk List page, when the status of disk changes to Mounted, the disk is mounted successfully.
Mount Shared EVS
Restriction and Limitations
· Shared EVS can only be used as data disk, not system disk.
· Shared Disk can be mounted to up to 16 cloud servers or physical servers at the same time.
· When mounting shared EVS, these elastic cloud servers or physical servers must be located in the same availability zone under the same region as the shared EVS.
· A shared EVS with the disk mode of SCSI can only be mounted to a cloud server that is located in the same anti-affinity cloud server group, otherwise the SCSI lock cannot be used normally, which may cause data loss.
· The multiple cloud servers mounted to the shared EVS can only run one of the Windows or Linux operating systems.
Procedure
Users can mount the shared EVS from the page entrances of EVS by performing the following steps:
Log in to the console.
Click in the upper left corner of the control center to select a region, here we select Hong Kong (China) 2.
Click Storage > EVS to go to the EVS list page.
In the row where the EVS is to be mounted, click Mount, as shown in the figure:
Note: The Shared Disk of the shared EVS is listed as Shared.
The difference between shared EVS and non-shared EVS is that when the non-shared EVS has been mounted to a cloud server, its Mount button is grayed out and cannot be used, while the shared EVS can continue to mount.
After clicking Mount, the Mount Disk window will pop up. In this window, the current number of servers that have been mounted on the EVS will be displayed, and the maximum number of servers that can still be mounted will appear too. Users can select the cloud server or physical server that needs to be mounted in this window, click the button in the middle, and then click OK to mount this cloud server or physical server as one of the mounting points. The selected cloud server or physical server can also be removed from the list of selected servers by clicking the button, as shown in the figure:
At this point, the shared EVS has been mounted to elastic cloud server or physical server.