Resync Pairs window

Use this window of the Resync Pairs wizard to resynchronize a pair.

For more information about using this wizard, see the topic on resynchronizing pairs by selecting In-System Replication to navigate to the desired software and information.

Selected Pairs table

The following table describes the items in this table in the Resync Pairs window of the Resync Pairs wizard.

Item

Description

Primary Volume

The P-VOL information.

Values:

  • LDEV ID: The P-VOL's LDEV identifier

  • LDEV Name: The P-VOL's LDEV name

  • (VSP G1000, G1500, and VSP F1500) Emulation Type: The P-VOL's emulation type.

  • (VSP Gx00 models and VSP Fx00 models) Attribute: The P-VOL's attribute.

  • Capacity: The P-VOL's volume capacity

  • CLPR: The P-VOL's CLPR ID

Copy Type

The pair type.

Values:

  • SI-L1: SI L1

  • SI-L2: SI L2

  • (VSP G1000, G1500, and VSP F1500) SIMF: SIz

  • TI: HTI

Snapshot Group

The snapshot group name.

If the pair is not a Thin Image pair, a hyphen is displayed.

If the pair is a Thin Image pair and the snapshot group is not set, a blank is displayed.

Status

The status of the pair.

For more information about pair status, select In-System Replication to navigate to the desired software and status information.

Snapshot Date

HTI only.

The date and time the snapshot was acquired.

If the pair is not a Thin Image pair, a hyphen is displayed.

Secondary Volume

The S-VOL information.

Values:

  • LDEV ID: The S-VOL's LDEV identifier

  • LDEV Name: The S-VOL's LDEV name

  • (VSP G1000, G1500, and VSP F1500) Emulation Type: The S-VOL's emulation type.

  • (VSP Gx00 models and VSP Fx00 models) Attribute: The S-VOL's attribute.

  • Capacity: The S-VOL's volume capacity

  • CLPR: The S-VOL's CLPR ID

Pool Name (ID)

The pool name and identification number.

If the pair is not a Thin Image pair, a hyphen is displayed.

Mirror Unit

The mirror unit number.

Cascade

(VSP G1000, G1500, and VSP F1500)

Indicates whether cascade pairs can be created.

Enabled: Cascade pairs can be created.

Disabled: Cascade pairs cannot be created.

A hyphen appears for pairs that are not HTI.

Type

(VSP G1000, G1500, and VSP F1500)

The pair type.

Snapshot: The pair has the snapshot attribute.

Clone: The pair has the clone attribute

A hyphen appears for pairs that are not HTI.

Topology ID

(VSP G1000, G1500, and VSP F1500)

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 volume (root volume for Thin Image pairs), which is the base of the target pair, and the mirror unit number.

Resync Type

The type of resynchronization.

Values:

  • Normal Copy (Primary > Secondary) (default)

A full forward resynchronization from the P-VOL to the S-VOL. The differential data is updated to the S-VOL.

  • Reverse Copy (Secondary > Primary)

Resyncs the pairs from S-VOL to P-VOL. The differential data is updated to the P-VOL. You cannot use Reverse Copy with SI L2 or SIz pair sharing the P-VOL with an FCv2/FCSE pair.

  • Quick Resync (Primary > Secondary)

A forward resynchronization from the P-VOL to the S-VOL where data is not copied or resynchronized. The volumes are paired ("PAIR" status). The update copy operation copies the differential data to the S-VOL. You can use Quick Resync with SI or SIz pairs only.

  • Quick Restore (Secondary > Primary)

Swaps the P-VOL and S-VOLs. The update copy operation copies the differential data to the S-VOL. Only SI or SIz pairs can be selected. You cannot use Quick Restore with the following pairs:

  • SI L2 pairs

  • Only one of the P-VOL or S-VOL is DP-VOL

  • SI pairs with HTI pairs in P-VOL and S-VOL

  • SIz pairs sharing the P-VOL with an FCv2/FCSE pair

For more information about the methods you can use to resynchronize pairs, see the topic on types of pair resynchronization by selecting In-System Replication to navigate to the desired software and information.

Copy Pace

SI and SIz only.

The system option that determines the rate at which you want the storage system to copy data.

A hyphen appears for HTI pairs.

Values:

  • Slower: Improved host server I/O performance but slower processing speed.

  • Medium: Average processing speed and host server I/O performance.

  • Faster: Faster processing speed but slower host server I/O performance.