Powering off the GAD+UR primary storage system

Use the following procedure to power off the primary storage system in a GAD 3DC delta resync environment.

Procedure

  1. Using the alternate path software, stop I/O from servers to the primary storage system.

    Direct server I/O to the GAD secondary storage system.

  2. On the GAD secondary storage system, suspend the GAD pairs by specifying the S-VOL (swap suspension).

    Command example: pairsplit -g oraHA -RS -IH1

  3. Confirm that the pair types and the pair statuses are changed as shown in the following table.

    Before the GAD pair suspension

    After the GAD pair suspension

    Pair type

    Pair status

    Pair type

    Pair status

    P-VOL

    S-VOL

    P-VOL

    S-VOL

    GAD pair

    PAIR (Mirror(RL))

    PAIR (Mirror(RL))

    GAD pair

    PSUS (Block)

    SSWS (Local)

    UR pair

    PAIR

    PAIR

    UR delta resync pair

    PSUE1

    SSUS2

    UR delta resync pair

    PSUS2

    SSUS2

    UR pair

    PAIR

    PAIR

    Notes:

    1. Device Manager - Storage Navigator displays HOLDING.
    2. Device Manager - Storage Navigator displays HOLD.

  4. Power off the primary storage system.

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