ECS.RootVolume

**Table 1** Property description
Property	Required	Type	Description
volumeType	Yes	HuaweiCloud.EVS.Volume.Type.Name	System disk type Value Description: Indicates the system disk type. SATA:Ordinary IO disk type. SAS:High IO Disk Type. SSD:Ultra High IO Disk Type. co-p1:High IO(Performance optimization type I). uh-l1:Ultra High IO( Delay Optimization ). Value Constraint: The value can only be SATA, SAS, SSD, co-pl, or uh-l1. Suggestion: Set the value based on specifications and requirements. For details, see the ECS documentation at https://support.huaweicloud.com/eu/api-ecs/en-us_topic_0020212668.html.
size	Yes	integer	System disk size Value Description: Indicates the system disk size (unit: GB). Value Constraint: [40,1024] Suggestion: Set the value based on specifications and requirements. For details, see the ECS documentation at https://support.huaweicloud.com/eu/api-ecs/en-us_topic_0020212668.html.