Resync Pairs window

ShadowImage User Guide

Version
9.8.7
Audience
anonymous
Part Number
MK-98RD9021-17

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



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 5000 series) Emulation Type: The P-VOL's emulation type.
  • (VSP E series) 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 5000 series) SIMF: SIz
  • TI: HTI

Snapshot Group

The snapshot group name.

For non-HTI pairs, 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.

Snapshot Date

HTI pairs only.

The date and time the snapshot was acquired.

For non-HTI pairs, 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 5000 series) Emulation Type: The S-VOL's emulation type.
  • (VSP E series) 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.

For non-HTI pairs, a hyphen is displayed.

Mirror Unit

The mirror unit number.

Cascade

Indicates whether cascade pairs can be created.

Enabled: Cascade pairs can be created.

Disabled: Cascade pairs cannot be created.

For non-HTI pairs, a hyphen is displayed.

Type

The pair type.

Snapshot: The pair has the snapshot attribute.

Clone: The pair has the clone attribute or diff clone attribute. In the TI Pairs window, if Diff Compare Volume displays the LDEV ID, the diff clone attribute is set for the pair. If Diff Compare Volume displays a hyphen (-), the clone attribute is set for the pair.

For non-HTI pairs, a hyphen is displayed.

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 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 (VSP 5000 series).

  • 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. Can be selected for SI or SIz pairs. 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
    • (VSP 5000 series) SIz pairs sharing the P-VOL with an FCv2/FCSE pair

For more information about the methods you can use to resynchronize pairs, see Types of pair resynchronization.

Copy Pace

SI and SIz pairs only. For HTI pairs, you cannot select the rate.

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.