Volume placement groups
In this article:
Volume placement groups#
General information#
A volume placement group is a volume group distributed across different physical servers in one availability zone. One particular server can host only one volume of the group.
Important
This functionality is available only for nv1: Non-replicated (NVMe) volumes.
The server where the volume will be located is selected automatically when it is created. If the volumes are not included in the same placement group, they may end up on the same server. This may cause unavailability of these volumes at the same time during a server reboot or failure. When volumes are included in a placement group, they are guaranteed to be on different servers.
Volume placement groups are subject to the following constraints:
Maximum five groups are allowed for one project.
A volume can belong to one placement group only.
A group can include only volumes from the same availability zone.
Each group may contain max. 2 volumes.
Note
The limit for the number of volumes cannot be increased yet.
You can add a volume to a placement group only when the volume is created.
Creating a volume placement group#
Go to Virtual machines Storage Volume placement groups.
Click Create.
In the dialog window:
specify the placement group name;
select the availability zone.
Click Create again.
Deleting a volume placement group#
A placement group can only be deleted if there are no volumes in it. The volume can only be removed from a placement group by deleting it.
Go to Virtual machines Storage Volume placement groups.
Select the volume placement group in the resource table.
Click Delete.
In the window that opens, confirm the action.