This window is the first window of the
Edit Local Replica Options wizard.
Setting fields
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:
OpenSelect when you want to change system options that affect SI and HTI performance.
MainframeSelect when you want to change system options that affect SI-MF, 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.
Nondisruptive 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 (secondary to primary) 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.
Normal Resync Multiplexing (ShadowImage/ShadowImage for Mainframe) (26)Accelerates resynchronization (primary to secondary) 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.
Disable the alert notification of shared memory space warning (30) Inhibits the alert notification of SIM reference code 603000.
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
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.
Nondisruptive 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 (secondary to primary) 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.
Normal Resync Multiplexing (ShadowImage/ShadowImage for Mainframe) (26)Accelerates resynchronization (primary to secondary) 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.
