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.

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

Command example: pairsplit -g oraHA -RS -IH1

  1. 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.

  1. Device Manager - Storage Navigator displays HOLD.

  1. Power off the primary storage system.