Add External Volumes confirmation window

External Path Group ID

Name of the external path group

Vendor / Model / Serial Number

Identifying information for the external system

Priority

Priority of external paths

Port ID

External port of the local storage system

Type

Port type:

• Fibre: Fibre Channel port
• iSCSI: iSCSI port

Virtual Port ID

Virtual port of the local storage system

External

Information about the target port of the external storage system:

• IP Address: Target port IP address when the port type is an iSCSI port
• WWN / iSCSI Target Name: WWN to show the target port when the port type is a Fibre Channel port. If the port type is iSCSI, the iSCSI target name is displayed.

LUN ID(Highest Priority)

LUN that is connected to the external path with the highest priority

Device Name

Name of the storage system reported to the host by the external volume. The displayed name differs by vendor. For some enterprise storage systems, emulation type is displayed.

Capacity (VSP 5000 series)

External volume capacity

Volume Properties

Identification number of the external volume.

The value is used by UVM to identify the LUN across multiple paths. The value is provided by the external system and might reflect internal numbering.

Device ID

Identification number of the external volume

Drive Info

Information about the external volume's drive type:

• SATA: Drive type of external volumes is SATA
• SSD,FMD: Drive type of external volumes is SSD or FMD
• (For VSP 5000 series) SCM: Drive type of external volumes is SCM. SCM is displayed only when the SCM drive is mounted on a VSP 5000 series storage system. SSD, FMD is displayed, however, when the DKCMAIN program version is earlier than 90-04-04-00/00.

Parity Group ID

Parity group numbers

Base Emulation Type (VSP 5000 series)

External volume's emulation type

Top LDEV ID

External volume's top LDEV ID

Top LDEV Name

External volume's top LDEV name

Number of LDEVs

External volume's number of LDEVs

Capacity

External volume capacity

SSID (VSP 5000 series)

SSIDs

CLPR

CLPR used for accessing to the mapped external volume

Cache Mode

• Enable: Write data from the host is propagated asynchronously.
• Disable: Write data from the host is propagated synchronously.

See Cache use and external storage performance for more information.

Inflow Control

• Enable: Write data is limited or prevented from being written to cache memory when the write operation cannot be performed.
• Disable: Write data is allowed to be written to cache when the write operation cannot be performed.

See External volume policy settings and functions for more information.

Path Mode

Operation mode of the external path:

• Single: Ordinarily, only one external port is used even if alternate paths are set. In Single mode, alternate paths are used only in case of maintenance work failure.
• Multi: When alternate paths are set, external paths from several ports are simultaneously used with load balancing.
• ALUA: When alternate paths are set, external paths from several ports are simultaneously used with load balancing. External paths connected to ports in Passive status are not used.

ALUA Permitted

Whether ALUA can be set as the Path Mode in the local storage system:

• Enable: ALUA Mode is used.
• Disable: ALUA Mode is not used.

Load Balance Mode

I/O load balance system for external storage system:

• Normal Round-robin: Load balance is performed in round-robin system.
• Extended Round-robin: Load balance system is automatically switched for sequential I/O and random I/O.
• Disable: I/O operation is performed with a single path, without load balance.

MP Unit ID

IDs of the external volume's MP unit

Attribute

External volume's attribute