Create TI Pairs window

This is the initial window of the Create TI Pairs wizard, which you can use to select LDEVs that are P-VOLs.

Setting fields

The following table lists the items on this window of the Create TI Pairs wizard.

Item

Description

Create Pairs using Volumes as Root Volumes

Specify whether to create a new pair using the specified volume as the root volume.

  • Yes: Create a pair using the specified volume as the root volume. The Available Primary Volumes table lists LDEVs which are not paired, and S-VOLs of the cascaded pairs with the clone attribute.
  • No: Create a pair using the P-VOL of a created pair. The Available Primary Volumes table lists P-VOLs of created pairs, and S-VOLs of created cascaded pairs.

Select By

Specify whether to specify LUN to create a pair.

  • LUN: Specify LUN, and then select an LDEV to create a pair.
  • LDEV: Select an LDEV to create a pair without specifying LUN.

Selection Object

Filters LDEVs in the Available Primary Volumes table according to port type.

This item is displayed when LUN is selected for Select By.

Port ID

Filters LDEVs in the Available Primary Volumes table according to port ID.

This item dispays if you select LUN for Select By.

Host Group Name

Used to filter LDEVs to display in the Available Primary Volumes table by host group name.

This item is displayed if you select LUN for Select By, and a Fibre Channel port for Port ID.

This item is displayed if you select LUN for Select By, and a Fibre Channel port.

Default: Any

iSCSI Target Alias

Used to filter LDEVs to display in the Available Primary Volumes table by iSCSI target alias.

This item is displayed if you select LUN for Select By, and an iSCSI port for Port ID.

Default: Any

Cascade

Select to enable or disable creation of cascaded pairs.

  • Enable Cascaded pairs can be created.
  • Disable Cascaded pairs cannot be created.

Pair Type

Select the pair type.

  • Snapshot Creates a pair with the snapshot attribute.
  • Clone Creates a pair with the clone attribute.

This item is available when you select:

  • No for Create Pairs using Volumes as Root Volumes.
  • Yes for Create Pairs using Volumes as Root Volumes and Enable for Cascade.

Select Pool button

Click to open the Select Pool window.

You cannot select this button if you select No for Create Pairs using Volumes as Root Volumes.

Snapshot Group

Specifies whether to create a new snapshot group or to use an existing one.

Values:

  • Create New Enter the values of the snapshot group you want to create in Number of Snapshot Data per Primary Volume, Prefix, and Initial Number, and then select Snapshot Group Configuration.
  • Use Existing Select Snapshot Group Configuration, and then select the snapshot group you want to use from the Available Snapshot Groups table. If you select All in Snapshot Group Configuration, enter a value for Number of Snapshot Data per Primary Volume.

Number of Snapshot Data per Primary Volume

The number of snapshot data per primary volume.

Snapshot Group Configuration

The configuration of the snapshot data.

Values:

  • P-VOL Straddle When you select Create New in Snapshot Group, creates a snapshot group that straddles multiple primary volumes. When you select Use Existing in Snapshot Group, adds snapshot data to an existing snapshot group that you select in the Available Snapshot Groups table as straddling multiple primary volumes.
  • Per P-VOL Creates a snapshot group for each primary volume. You can select this option if you select Create New in Snapshot Group.
  • AllWhen you select Create New in Snapshot Group, creates a new snapshot group and adds all snapshot data to it. When you select Use Existing in Snapshot Group, adds all snapshot data to an existing snapshot group.

Prefix

The fixed character prefix of the snapshot group.

Initial number

The initial number of the snapshot group.

Add button

Click to move the selected volumes from the Available Primary Volumes table to the Selected Primary Volumes table.

Available Snapshot Groups table

The following table lists the items in the Available Snapshot Groups table on the Create TI Pairs window.

This table is displayed if you select Use Existing in Snapshot Group.

Item

Description

Snapshot Group

The snapshot group name.

Number of Pairs

The number of snapshot group pairs.

New Snapshot Group

Indicates whether the snapshot group is new or existing.

Values:

  • YesNewly created snapshot group.
  • NoAlready defined snapshot group.

Available Primary Volumes table

The following table lists the items in the Available Primary Volumes table on the Create TI Pairs window.

Item

Description

LDEV ID

The LDEV’s identification number which can be specified as the P-VOL.

LDEV Name

The LDEV's name.

Port ID

The port name of the LDEV's LUN path.

This item is displayed if you select LUN for Select By.

Host Group Name / iSCSI Target Alias

The host group name and ID or iSCSI target alias and ID of the LDEV's LUN path.

This item is displayed if you select LUN for Select By.

iSCSI Target Name

The iSCSI target name.

This item is displayed if you select LUN for Select By.

LUN ID

The LUN identification number of the LDEV's LUN path.

This item is displayed if you select LUN for Select By.

Provisioning Type

The LDEV’s provisioning type.

Values:

  • Basic Internal volume.
  • DP DP-VOL.
  • External External volume.
  • ALU ALU attribute volume.

Attribute

The LDEV’s attribute.

Values:

  • ALU ALU attribute volume.
  • SLU SLU attribute volume.
  • Data Direct Mapping Data Direct Mapping attribute volume.

If the volume does not have any attribute specified, a hyphen (-) is displayed.

Capacity

The capacity of the LDEV.

CLPR

The LDEV’s CLPR ID.

Encryption

The LDEV’s encryption information.

  • Enabled Encryption is enabled for the parity group to which the LDEV belongs, or a V-VOL is associated with a pool in which a pool volume has encryption enabled.
  • Disabled Encryption is disabled for the parity group to which the LDEV belongs, or a V-VOL is associated with a pool in which a pool volume has encryption disabled.
  • Mixed The pool to which the LDEV belongs contains two or more of the following:
    • Volume for which encryption is enabled
    • Volume for which encryption is disabled
    • External volume

Note: Data encryption is not ensured in an LDEV with Mixed encryption status.

If the LDEV is an external volume or migration volume, a hyphen (-) is displayed.

For DP-VOLs, the pool to which an LDEV belongs is an external volume or blocked.

Capacity Saving

Information about the LDEV's capacity saving function.

  • Compression The compression function is used.
  • Deduplication and Compression The deduplication function and the compression function are used.
  • Disabled The capacity saving function is not used.

T10 PI

The LDEV's T10 PI attribute information.

  • Enabled The LDEV's T10 PI attribute is enabled.
  • Disabled The LDEV's T10 PI attribute is disabled.

Number of Snapshot Data

The number of snapshot data to which the LDEV belongs.

Cascade

Indicates whether a cascaded pair can be created

  • Enabled Cascaded pairs can be created.
  • Disabled Cascaded pairs cannot be created.

TI Pair Position

Indicates that the volume is the P-VOL or S-VOL of the pair.

TI Pair Topology ID

The topology ID, which indicates the layer of the pair based on the mirror unit. The topology ID consists of the LDEV ID of the root volume and the mirror unit number.

Primary Volumes

If you use the LDEV as an S-VOL for an existing pair, information about the P-VOL is displayed.

Values:

  • LDEV ID The LDEV's identification number.
  • LDEV Name The LDEV's name.
  • Port ID The port name of the LDEV's LUN path.
  • Host Group Name / iSCSI Target Alias The host group name and ID or iSCSI target alias and ID of the LDEV's LUN path.
  • iSCSI Target Name The P-VOL's iSCSI target name.
  • LUN ID The LUN identification number of the LDEV's LUN path.
  • Capacity The LDEV's capacity.
  • CLPR The LDEV's CLPR ID.

Pool Name (ID)

The pool name and identification number.

Mirror Unit

The mirror unit number.

A hyphen (-) is displayed if the volume is not an S-VOL of an existing pair.

Selected Primary Volumes table

The following table lists the items in the Selected LDEVs table on the Select Primary Volumes window.

Item

Description

LDEV ID

The selected P-VOL's LDEV identification number.

LDEV Name

The selected P-VOL's LDEV name.

Port ID

The port name of the LDEV's LUN path.

Host Group Name / iSCSI Target Alias

The host group name and ID or iSCSI target alias and ID of the LDEV's LUN path.

iSCSI Target Name

The iSCSI target name.

LUN ID

The LUN identification number of the LDEV's LUN path.

Attribute

The LDEV’s attribute.

Values:

  • ALU ALU attribute volume.
  • SLU SLU attribute volume.
  • Data Direct Mapping Data Direct Mapping attribute volume.

If the volume does not have any attribute specified, a hyphen (-) is displayed.

Capacity

The capacity of the LDEV.

Encryption

The LDEV’s encryption information.

  • Enabled Encryption is enabled for the parity group to which the LDEV belongs, or a V-VOL is associated with a pool in which a pool volume has encryption enabled.
  • Disabled Encryption is disabled for the parity group to which the LDEV belongs, or a V-VOL is associated with a pool in which a pool volume has encryption disabled.
  • Mixed The pool to which the LDEV belongs contains two or more of the following:
    • Volume for which encryption is enabled
    • Volume for which encryption is disabled
    • External volume

Note: Data encryption is not ensured in an LDEV with Mixed encryption status.

If the LDEV is an external volume or migration volume, a hyphen (-) is displayed.

For DP-VOLs, the pool to which an LDEV belongs is an external volume or blocked.

Capacity Saving

Information about the LDEV's capacity saving function.

  • Compression The compression function is used.
  • Deduplication and Compression The deduplication function and the compression function are used.
  • Disabled The capacity saving function is not used.

T10 PI

The LDEV's T10 PI attribute information.

  • Enabled The LDEV's T10 PI attribute is enabled.
  • Disabled The LDEV's T10 PI attribute is disabled.

Snapshot Group

The snapshot group name.

New Snapshot Group

Indicates whether the snapshot group is new or existing.

Values:

  • Yes Newly created snapshot group.
  • No Already defined snapshot group.

Number of Snapshot Data

The number of snapshot data.

Pool Name (ID)

The pool name and identification number.

Pool Encryption

The pool's encryption information.

  • Enabled A pool was created by the pool volume for which encryption is enabled.
  • Disabled A pool was created by the pool volume for which encryption is disabled.
  • Mixed A pool contains two or more of the following:
    • Volume for which encryption is enabled
    • Volume for which encryption is disabled
    • External volume

Note: Data encryption is not ensured in an LDEV with Mixed encryption status.

For pools created in external volumes, or blocked pools, a hyphen (-) is displayed.

Cascade

Indicates whether a cascaded pair can be created

  • Enabled Cascaded pairs can be created.
  • Disabled Cascaded pairs cannot be created.

Pair Type

Select the pair type.

  • Snapshot A pair with the snapshot attribute.
  • Clone A pair with the clone attribute.

Remove button

Click to remove the selected row from the Selected Primary Volumes table.

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