Edit Local Replica Options window

This window is the first window of the Edit Local Replica Options wizard.

Setting fields (VSP G1000 only)

The following table lists the items in the Edit Local Replica Options window of the Edit Local Replica Options wizard.

Item

Description

System Type

The storage system type.

Values:

  • Open: Select when you want to change system options that affect SI and HTI performance.

  • Mainframe: Select when you want to change system options that affect SIz, FCv2, and FCSE performance.

Default: Open

SI/TI System Options table

The following table lists the items in this table on the Edit Local Replica Options window.

Item

Description

System Option

Displays the system options. The number next to each item is the system option number.

Values:

  • Swap & Freeze (1): Quick Restores and then saves the current data. Used with the Quick Restore, inhibits the Update Copy operation after performing Quick Restore, and the paired S-VOL in "PAIR" status is not updated.

  • Host I/O Performance (2): Use this option to give weight to I/O response rather than the copy time. This option controls copy operations and improves the host I/O response.

  • Non-disruptive Migration Data Consistency (16): Use this option to keep the latest data in the migration source storage system instead of distributing data in both the destination and source storage systems during data migration.

  • Copy Pace Ext. Slower1 (20), Copy Pace Ext. Slower2 (21), Copy Pace Ext. None (22): Reducing the copy volume in "PAIR" status curbs the influence to the I/O performance of the host server. This item is available to all pairs in "PAIR" status. The order of Copy Pace Ext. Slower1, Copy Pace Ext. Slower2, and Copy Pace Ext. None determines the host server’s I/O performance.

  • Quick/Steady Split Multiplexing (ShadowImage/ShadowImage for Mainframe) (24): Accelerates ShadowImage pair split. The multiplicity (the number of jobs for which copy processing can be executed concurrently) of copy processing for each pair is changed from 1 to 24.

  • Reverse Copy Multiplexing (ShadowImage/ShadowImage for Mainframe) (25): Accelerates resynchronization of ShadowImage pairs. The multiplicity (the number of jobs for which copy processing can be executed concurrently) of copy processing for each pair is changed from 1 to 24.

Status

Shows whether the system option is currently enabled or disabled.

Enable button

Click to enable the selected option.

Disable button

Click to disable the selected option.

SIMF/FCv2/FCSE System Options table (VSP G1000 only)

The following table lists the items in this table on the Edit Local Replica Options window.

Item

Description

System Option

Displays the system options. The number next to each item is the system option number.

Values:

  • Swap & Freeze (1): Quick Restores and then saves the current data. Used with the Quick Restore, inhibits the Update Copy operation after performing Quick Restore, and the paired S-VOL (T-VOL for FCv2 or FCSE) is not updated.

  • Host I/O Performance (2): Use this option to give weight to I/O response rather than the copy time. This option controls copy operations and improves the host I/O response.

  • FC Slower Copy1 (FCv2 or FCSE only) (3): Reduces the multiplicity of background copy into half.

  • FC Slower Copy 2 (FCv2 or FCSE only) (4): Reduces the multiplicity of background copy into quarter.

  • Non-disruptive Migration Data Consistency (16): Use this option to keep the latest data in the migration source storage system instead of distributing data in both the destination and source storage systems during data migration.

  • FC Ext. Slower Copy1 (17): Inhibits background copy and improves host I/O response when the operating ratio of the MP blade (FCv2 or FCSE S-VOL or T-VOL is allocated) exceeds 65%.

  • FC Ext. Slower Copy2 (18): Inhibits background copy and improves host I/O response when the operating ratio of the MP blade (FCv2 or FCSE S-VOL or T-VOL is allocated) exceeds 50%.

  • Copy Pace Ext. Slower1 (20), Copy Pace Ext. Slower2 (21), Copy Pace Ext. None (22): Reducing the copy volume in the "DUPLEX" status curbs the influence to the I/O performance of the host server. This item is available to all pairs in "DUPLEX" status. The I/O performance of the host server is improved in order of Copy Pace Ext. Slower1, Copy Pace Ext. Slower2, and Copy Pace Ext. None.

  • Quick/Steady Split Multiplexing (ShadowImage/ShadowImage for Mainframe) (24): Accelerates ShadowImage for Mainframe pair split. The multiplicity (the number of jobs for which copy processing can be executed concurrently) of copy processing for each pair is changed from 1 to 24.

  • Reverse Copy Multiplexing (ShadowImage/ShadowImage for Mainframe) (25): Accelerates resynchronization of ShadowImage for Mainframe pairs. The multiplicity (the number of jobs for which copy processing can be executed concurrently) of copy processing for each pair is changed from 1 to 24.

Status

Shows whether the option is currently enabled or disabled.

Enable button

Click to enable the selected option.

Disable button

Click to disable the selected option.