Disk Drive node

A Disk Drive node represents a physical disk drive in a storage system.

Creation/update

A Disk Drive node is created or updated when a storage entity is discovered by one of the following:

WBEM queries to storage management software triggered by the creation or update of an SI representing storage management software
Directly discovered storage using WBEM queries to the WBEM/SMI-S provider triggered by the creation or update of a Storage Device node representing the chassis
Directly discovered storage using SNMP triggered by the creation or update of a Storage Device node representing the chassis

A Disk Drive node is removed when its parent Storage System node is removed. This is Containment Removal.

The attributes of the DiskDrive node are described in the following table:

UI Name Attribute Name and Type	Description
Not shown in UI key : string	Globally unique key
Name name : string	Name of the disk drive
Type type : string	Type of the disk drive
Speed speed : int	Speed of the disk drive in RPM
Size size : int	Size in bytes
Vendor vendor : string	Disk drive vendor
Model model : string	Disk drive model
Serial Number serial : string	Disk drive serial number
Role role : string	Role of the disk drive
Current State current_state : string	Current state of the disk drive
Virtual virtual : boolean	Virtual flag
Chassis Serial chassis_serial : string	Main chassis serial number
Enclosure Serial enclosure_serial : string	Enclosure serial number
Position position : int	Position of the disk in the enclosure
Number number : int	Number of the disk in the array
Encryption encryption : boolean	Data at rest encryption

The relationships of the DiskDrive node are described in the following table:

UI Name	Relationship	Description
Hardware Container	ContainedDrive: Containment: Container: HardwareContainer	Containing Hardware Container
Host	ContainedDrive: Containment: Container: Host	Containing Host
Host Container	ContainedDrive: Containment: Container: HostContainer	Containing Host Container
Storage Pool	ContainedDrive: Containment: Container: StoragePool	Containing Storage Pool
Storage System	ContainedDrive: Containment: Container: StorageSystem	Containing Storage System
Storage System Group	ContainedDrive: Containment: Container: StorageSystemGroup	Containing Storage System Group
Virtual Machine	ContainedDrive: Containment: Container: VirtualMachine	Containing Virtual Machine
Physical Disks	Consumer: StorageUse: Provider: DiskDrive	Physical disks for this virtual disk
Virtual Disks	Provider: StorageUse: Consumer: DiskDrive	Virtual disks using this physical disk
Storage Volume Providers	Consumer: StorageUse: Provider: StorageVolume	Storage volume providers for this virtual disk
File Systems	Provider: StorageUse: Consumer: FileSystem	File Systems using this Disk Drive
Hosts	Provider: StorageUse: Consumer: Host	Hosts using this Disk Drive
Storage Volume Consumers	Provider: StorageUse: Consumer: StorageVolume	Storage Volume consumers for this Disk Drive
Virtual Machine Consumers	Provider: StorageUse: Consumer: VirtualMachine	Virtual Machine consumers for this Disk Drive

The expressions of the DiskDrive node are described in the following table:

UI Name	Expression	Description
Size	size_display : formatQuantity(size, "B1000")	Size of the Disk Drive