FlashCopy properties — General

Introduction

Use this page to view information about a selected FlashCopy relationship, including information about the source and target volumes. This page displays the relationship and lists all enabled or disabled copy options that you have selected for the relationship.

Menu path

Fields

Created

The date and time that the FlashCopy relationship was created.

Last refresh

The most recent date and time that the target volume in the FlashCopy relationship was refreshed.

Relationship will remain

Indicates whether the FlashCopy relationship remains after the copy process is complete. If the FlashCopy relationship is persistent, then the value is Yes; otherwise, the value is No. Use the Create FlashCopy relationship — Select common options page to set this value when you create the FlashCopy relationship. If you have selected the Make relationship(s) persistent option on this page, the value of the Relationship will remain field on the FlashCopy properties — General page is Yes.

Change recording

Indicates whether the change recording function is enabled on the selected FlashCopy volume pair. Change recording is a feature that the storage unit uses to monitor writes and record changes made to FlashCopy volumes since the last refresh on the volume pair. If the change recording function is enabled on the selected FlashCopy volume pair, then the value is Yes; otherwise, the value is No. Use the Create FlashCopy relationship — Select common options page to set this value when you create the FlashCopy relationship. If you have selected the Enable change recording option on this page, the value of the Change recording field on the FlashCopy properties — General page is Yes.

Indicates whether you can choose to discard or commit changes to the FlashCopy target volume. When a FlashCopy relationship is established, this value defaults to No. If the option is enabled on the selected FlashCopy volume pair, then the value of the field is Yes; otherwise, the value is No. This option is only relevant in the context of a Global Mirror environment. The option must be set to Yes during a Global Mirror FlashCopy consistency group formation failure using the FlashCopy Revertible action on the FlashCopy main page. In most of the cases, the volumes are consistent and this process is not necessary. If a FlashCopy target volume has data that is inconsistent with data on at least one other target volume of the consistency group, and you have changed the FlashCopy relationship to , you have two choices. You can discard data and restore the FlashCopy pair back to a previous FlashCopy relationship, or you can commit the current target volume data. After you have discarded or committed the target volume data, the value is automatically changed from Yes to No.

Background copy initiated

Indicates whether the background copy process has been initiated to physically copy data from the source volume to the target volume of the FlashCopy pair. If the FlashCopy background copy has been initiated, then the value is Yes; otherwise, the value is No. Use the Create FlashCopy relationship — Select common options page to set this value when you create the FlashCopy relationship. If you have selected the Initiate background copy option on this page, the value of the Background copy initiated field on the FlashCopy properties — General page is Yes. You can also use the Initiate Background Copy action on the FlashCopy main page to set this value to Yes on a persistent FlashCopy relationship.

Source is write inhibited

Indicates whether writes to the source volume of the FlashCopy volume pair are prohibited. If writes to the source volume of the FlashCopy volume pair are prohibited, then the value is Yes; otherwise, the value is No. When a FlashCopy relationship is established, this value defaults to No. This value is only set to Yes in a limited circumstance during a Global Mirror FlashCopy consistency group formation failure scenario. If a FlashCopy consistency group target volume has data that is inconsistent with data on at least one other target volume in the consistency group, you must change the FlashCopy relationships in the consistency group to Revertible using the FlashCopy Revertible action on the FlashCopy main page to enter the FlashCopy Revertible wizard. After you select common options, the next step of the wizard is the FlashCopy revertible — Select advanced options page. Inhibit writes to source volume is the first option on this page, and prevents further writes to the source volume from the time that you make the FlashCopy relationship revertible until the time that you discard or commit the changes to the target volumes. When you discard or commit changes to the target volumes that you have made revertible, you also automatically remove the source write inhibit option and the value of the Source is write inhibited field on the FlashCopy properties — General page changes from Yes to No.

Target is write inhibited

Indicates whether writes to the target volume of the FlashCopy volume pair are prohibited. If writes to the target volume of the FlashCopy volume pair are prohibited, then the value is Yes; otherwise, the value is No. When a FlashCopy relationship is established, this value defaults to No. This value is only set to Yes in a limited circumstance during a Global Mirror FlashCopy consistency group formation failure scenario. If a FlashCopy consistency group target volume has data that is inconsistent with data on at least one other target volume in the consistency group, you must change the FlashCopy relationships in the consistency group to Revertible using the FlashCopy Revertible action on the FlashCopy main page to enter the FlashCopy Revertible wizard. After you select common options, the next step of the wizard is the FlashCopy revertible — Select advanced options page. Inhibit writes to target volume is the second option on this page, and prevents further writes to the target volume from the time that you make the FlashCopy relationship revertible until the time that you discard or commit the changes to the target volumes. When you discard or commit changes to the target volumes that you have made revertible, you also automatically remove the target write inhibit option and the value of the Target is write inhibited field on the FlashCopy properties — General page changes from Yes to No.

Source Number

The volume ID or number of the FlashCopy source volume. The volume number is a 4-digit hexadecimal value that consists of the logical subsystem (LSS) number and the volume device number, LLVV, where LL is the LSS number and VV is the volume device number.

Source Nickname

The nickname of the FlashCopy source volume. Click on the link to view the Volume Properties page.

Target Number

The volume ID or number of the FlashCopy target volume. The volume number is a 4-digit hexadecimal value that consists of the logical subsystem (LSS) number and the volume device number, LLVV, where LL is the LSS number and VV is the volume device number.

Target Nickname

The nickname of the FlashCopy target volume. Click on the link to view the Volume Properties page.

OK

Closes the FlashCopy properties — General page and returns to the FlashCopy main page.