Add External Volumes window

Part of the Add External Volumes wizard, use this window to display discovered external volumes and to make related selections.

Discovered External Volumes


Item	Description
LUN ID(Highest Priority)	The external LUN with the highest priority. "?" indicates that an external volume is not found. In this case, confirm the connection with the external system, and then perform the operation again.
Device Name	Name of the storage system reported to the host by the external volume. The displayed name differs by vendor. For some Hitachi enterprise storage, this field displays emulation type.
Capacity	External volume capacity.
Characteristic1	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 may reflect internal numbering.
Characteristic2	Identification number of the external volume.
Drive Info	Information about the external volume’s drive type. SATA displays when the external volume is a SATA drive of following storage systems. Virtual Storage Platform Universal Storage Platform V/VM HUS/AMS/WMS SMS Thunder 9500V SSD displays when the external volume is the SSD of following storage systems. Virtual Storage Platform G200, G400, G600 Virtual Storage Platform G1000 HUS VM Storage Platform Virtual Storage Platform Universal Storage Platform V/VM
Path Mode	Displays operation mode of the external path. Single: Ordinarily, only one external path 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 Settable	Displays whether ALUA can be set as the Path Mode in the external storage system. Enable: Enables ALUA Mode. Disable: Disables ALUA Mode.
Discovery Result	Displays one of the following: Normal An error code When clicked, the link displays the Discovery Result Detail window with details of the search.
Initial Parity Group ID	An external volume group number and sequence number. Values range from 1 - 1 (default) to 16384 - 4096.
Allow Simultaneous Creation of LDEVs	LDEVs are automatically created in the internal volume when Yes is selected. If No is selected, you must create LDEV’s manually.
Use External Storage System Configuration	If Yes is specified in “Allow Simultaneous Creation of LDEVs”, the external volume’s configuration for the LDEVs is used when Yes is selected. If No is selected, you must configure LDEV’s manually.
LDEV Name	Requires a prefix character and initial number, 32 characters maximum (including the initial number). Numbering rule for Initial Number: 1: total 9 numbers (1,2,3,…9) 08: total 92 numbers (08,09,10,…99) 23: total 77 numbers (23,24,25,…99) 098: total 902 numbers (098,099,100…999)
Options	Optional default settings for the external volume. Options can be affected by values entered in previous fields.
Initial LDEV ID	Virtual Storage Platform G200, G400, G600 searches from this number in ascending order and allocates the next available LDEV ID to the external volume. Ranges for each item: LDKC: 00 CU: From 00 (default) to FE. DEV: The LDEV ID. From 00 (default) to FF. Interval: Interval between LDEV IDs. From 0 (default) to 255.
LDKC	LDKC number. 00 can be set for the value.
CU	CU number. Possible values for each model: VSP G200: 00 to 07 VSP G400, VSP G600: 00 to 0F VSP G800: 00 to 3F Default is 00.
DEV	LDEV identifier. Value between 00 and FF can be set. Default is 00.
Interval	Interval between each LDEV can be selected. The specified interval will be kept and the LDEV ID will be set to each LDEV in external volume.
View LDEV IDs	Shows used, available, and disabled LDEV IDs.
Number of LDEVs per External Volume	Number of LDEVs to be created in the local system when the volume is mapped. Depends on external volume capacity.
Cache Partition	CLPR for accessing the external volume. A value between CLPR0 and CLPR31 can be specified. The default is the value set in Edit Policies window. See Editing mapping policies for more information.
Cache Mode	Enable: Write data from the host is propagated asynchronously Disable: Write data from the host is propagated synchronously See the planning topic in the Hitachi Universal Volume Manager User Guide for more information.
Inflow Control	Enable: Limits or prevents write data from being written to cache memory when the write operation cannot be performed. Disable: Allows write data to be written to cache when the write operation cannot be performed. See Editing mapping policies for more information.
Use ALUA as Path Mode	Select whether ALUA is used as the Path Mode. The default is Enable if ALUA mode can be set as the Path Mode. Otherwise, the default is Disable. Enable: Enables ALUA mode. Disable: Disables ALUA mode.
Load Balance Mode	Select I/O load balance system for external storage system. Depend on the selected external volume(s): If Enable is set for ALUA Settable on the external volume, Normal Round-robin is set for Load Balance Mode automatically. If Disable is set for ALUA Settable, Disable is set for Load Balance Mode automatically. Normal Round-robin: Performs load balance in round-robin system. Extended Round-robin: Load balance system is automatically switched for sequential I/O and random I/O. Disable: Performs I/O operation with a single path, without load balance. The default is the value set in the Edit Policies window. If the product name of an external storage system is displayed as "(generic)", Depend on the selected external volume(s) is used by default. This item cannot be selected when the path mode of the external volume is Single or Disable is selected for Use ALUA as Path Mode.
MP Unit ID	MP unit ID for the external volume. You can select MPU-10, MPU-11, MPU-20 or MPU-21. Auto (default if it can be selected): Unit is automatically selected by the system. Unit with lowest number is the default when Auto cannot be selected.
Add	When clicked, moves selected volumes to the Selected External Volumes list.

Selected External Volumes

Displays selected external volumes.


Item	Description
LUN ID(Highest Priority)	External volume’s LUN 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 Hitachi enterprise storage, this field displays emulation type.
Characteristic1	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 may reflect internal numbering.
Characteristic2	External volume’s identification number.
Drive Info	Information about the external volume’s drive type. SATA displays when the external volume is a SATA drive of following storage systems. Virtual Storage Platform Universal Storage Platform V/VM HUS/AMS/WMS SMS Thunder 9500V SSD displays when the external volume is the SSD of following storage systems. VSP G200, G400, G600 Virtual Storage Platform G1000 HUS VM Storage Platform Virtual Storage Platform Universal Storage Platform V/VM
Parity Group ID	Parity group numbers
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’s capacity
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 the planning topic in the Hitachi Universal Volume Manager User Guide for more information.
Inflow Control	Enable: Limits or prevents write data from being written to cache memory when the write operation cannot be performed. Disable: Allows write data to be written to cache when the write operation cannot be performed. See Editing mapping policies for more information.
Path Mode	Displays operation mode of the external path. Single: Ordinarily, only one external path 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	Displays 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	Displays I/O load balance system for external storage system. Normal Round-robin: Performs load balance in round-robin system. Extended Round-robin: Load balance system is automatically switched for sequential I/O and random I/O. Disable: Performs I/O operation with a single path, without load balance.
MP Unit ID	External volume’s MP unit IDs.
Change Settings	When clicked, the Change Setting dialog box opens.
Remove	When clicked, removes external volumes from the Selected External Volumes table.
Path Detail*	When clicked, the External LUN Properties window opens and you can check the path details of the selected external volume.
LDEV Detail*	When clicked, the External LDEV Properties window opens and you can check the details of the LDEV to be created from the selected external volume.
* Appears when you click More Actions.