Skip to main content

We've Moved!

Product Documentation has moved to docs.hitachivantara.com
Hitachi Vantara Knowledge

Planned outage of global-active device storage systems

You can perform planned outages of global-active device (GAD) storage systems.

If you use a disk in a server as the quorum disk, you do not need to install the external storage system for the quorum disk. Descriptions assume that a volume in an external storage system is used as the quorum disk.

Planned power off/on: primary storage system

Perform the procedure for Powering off the primary storage system, and then perform the procedure for Powering on the primary storage system.

Powering off the primary storage system

  1. Direct server I/O to the storage system at the secondary site.

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

  2. On the storage system at the secondary site, suspend the GAD pairs to change the pair status of the S-VOLs to SSWS (swap suspension).

    pairsplit -g oraHA -RS -IH1
  3. Verify that the pair status of P-VOLs of theGAD pairs has changed to PSUS(Block) and that the pair status of the S-VOLs has changed to SSWS(Local).

    pairdisplay -g oraHA -fcxe -IH1
  4. Power off the storage system at the primary site.

Powering on the primary storage system

  1. Power on the storage system at the primary site.

  2. Confirm that the primary and secondary storage systems and the external storage system for the quorum disk do not have any blocked parts.

    If any parts are blocked, recover them.

  3. Check for SIMs about path blockage, and complete the SIMs.

  4. Confirm that the pair status of the GAD P-VOLs is PSUS(Block) and that the pair status of the S-VOLs is SSWS(Local).

    pairdisplay -g oraHA -fcxe -IH1
  5. On the storage system at the secondary site, resynchronize the GAD pairs by reversing the primary and secondary volumes (swap resync).

    pairresync -g oraHA -swaps -IH1
  6. Confirm that the pair status of the P-VOLs and S-VOLs of the GAD pairs has changed to PAIR (Mirror (RL)).

    pairdisplay -g oraHA -fcxe -IH1
  7. Using the alternate path software, resume I/O from the servers to the storage system at the primary site.

  8. If necessary, reverse the primary and secondary volumes.

Planned power off/on: secondary storage system

Perform the procedure for Powering off the secondary storage system, and then perform the procedure for Powering on the secondary storage system.

Powering off the secondary storage system

  1. Direct server I/O to the storage system at the primary site.

    Using the alternate path software, stop I/O from servers to the storage system at the secondary site.

  2. On the storage system at the primary site, suspend the GAD pairs by specifying the primary volume.

    pairsplit -g oraHA -IH0
  3. Confirm that the pair status of P-VOLs of GAD pairs has changed to PSUS(Local) and the pair status of the S-VOLs has changed to PSUS(Block).

    pairdisplay -g oraHA -fcxe -IH0
  4. Power off the storage system at the secondary site.

Powering on the secondary storage system

  1. Power on the storage system at the secondary site.

  2. Confirm that the primary and secondary storage systems and the external storage system for the quorum disk do not have any blocked parts.

    If any parts are blocked, recover them.

  3. Check for SIMs about path blockage, and complete the SIMs.

  4. Confirm that the pair status of the P-VOLs of the GAD pairs is PSUS(Local) and that the pair status of the S-VOLs is SSUS(Block).

    pairdisplay -g oraHA -fcxe -IH0
  5. On the storage system at the primary site, resynchronize the GAD pairs by specifying the primary volume.

    pairresync -g oraHA -IH0
  6. Confirm that the pair status of the P-VOLs and S-VOLs of the GAD pairs has changed to PAIR (Mirror (RL)).

    pairdisplay -g oraHA -fcxe -IH0
  7. Using the alternate path software, resume I/O from the servers to the storage system at the secondary site.

Planned power off/on of the external storage system, I/O at primary site

If you do not set a volume for the quorum disk, you do not need to power off or on the external storage system because you do not use it.

Perform the procedure for Powering off the external storage system, I/O at primary site, and then perform the procedure for Powering on the external storage system, I/O at primary site, only when you set a volume for a quorum disk using an external storage system.

Powering off the external storage system, I/O at primary site

  1. On the primary and secondary storage systems, disconnect the quorum disks.

    raidcom disconnect external_grp -ldev_id 0x9999 -IH0
    NoteWhen you disconnect a quorum disk, SIM (def0zz) (quorum disk blockade) might be issued (zz: quorum disk ID). If this SIM is issued, complete the SIM after powering on the storage system and reconnecting the quorum disk.
  2. On the primary and secondary storage systems, confirm that the quorum disk has been disconnected.

    raidcom get path -path_grp 1 -IH0
  3. Power off the external storage system.

Powering on the external storage system, I/O at primary site

  1. Power on the external storage system.

  2. Confirm that the primary and secondary storage systems and the external storage system for the quorum disk do not have any blocked parts.

    If any parts are blocked, recover them.

  3. Check for SIMs about path blockage, and complete the SIMs.

  4. On the primary and secondary storage systems, establish the connections to the quorum disks.

    raidcom check_ext_storage external_grp -ldev_id 0x9999 -IH0
  5. On the primary and secondary storage systems, confirm that the connections to the quorum disks have been established.

    raidcom get external_grp -external_grp_id 1-1 -IH0
  6. Confirm that the external volumes of the primary and secondary storage systems are recognized as quorum disks.

    raidcom get ldev -ldev_id 0x9999 -IH0
  7. Check for SIMs about quorum disk blockade, and complete the SIMs.

Planned power off/on of the external storage system, I/O at secondary site

If you do not set a volume for the quorum disk, you do not need to power off or on the external storage system because you do not use it.

Perform the procedure for Powering off the external storage system, I/O at secondary site, and then perform the procedure for Powering on the external storage system, I/O at secondary site, only when you set a volume for a quorum disk using an external storage system.

Powering off the external storage system, I/O at secondary site

  1. On the primary and secondary storage systems, disconnect the quorum disks.

    raidcom disconnect external_grp -ldev_id 0x8888 -IH1
    NoteWhen you disconnect a quorum disk, SIM (def0zz) (quorum disk blockade) might be issued (zz: quorum disk ID). If this SIM is issued, complete the SIM after powering on the storage system and reconnecting the quorum disk.
  2. On the primary and secondary storage systems, confirm that the quorum disks have been disconnected.

    raidcom get path -path_grp 1 -IH1
  3. Power off the external storage system.

Powering on the external storage system, I/O at secondary site

When using GAD pairs, you should know how to properly power on the external storage system with I/O at the secondary site.

  1. Power on the external storage system.

  2. Confirm that the primary and secondary storage systems and the external storage systems for the quorum disks do not have any blocked parts.

    If any parts are blocked, recover them.

  3. Check for SIMs about path blockage, and complete the SIMs.

  4. On the primary and secondary storage systems, establish connections to the quorum disks.

    raidcom check_ext_storage external_grp -ldev_id 0x8888 -IH1
  5. Confirm that the external storage system is connected correctly.

    (VSP 5000 series)
    raidcom get path -path_grp 1 -IH1
    PHG GROUP STS CM IF MP# PORT WWN PR LUN PHS Serial# PRODUCT_ID LB PM
    1 1-1 NML E D 0 CL5-C 50060e8008000160 1 0 NML 55555 VSP 5000 series N M D
    
    (VSP Gx00 models and VSP Fx00 models)
    raidcom get path -path_grp 1 -IH1
    PHG GROUP STS CM IF MP# PORT WWN PR LUN PHS Serial# PRODUCT_ID LB PM
    1 1-2 NML E D 0 CL5-C 50060e8007823521 1 0 NML 433333 VSP Gx00 N M
    
  6. On the primary and secondary storage systems, confirm that the connections to the quorum disks have been established.

    raidcom get external_grp -external_grp_id 1-2 -IH1
  7. Confirm that the external volumes of the primary and secondary storage systems are recognized as quorum disks.

    raidcom get ldev -ldev_id 0x8888 -IH1
  8. Check for SIMs about quorum disk blockade, and complete the SIMs.

Planned power off/on: primary and secondary storage systems

Perform the procedure for Powering off the primary and secondary storage systems, and then perform the procedure for Powering on the primary and secondary storage systems.

Powering off the primary and secondary storage systems

  1. Stop server I/O to the primary and secondary storage systems.

  2. On the primary storage system, suspend the GAD pairs by specifying the primary volume.

    pairsplit -g oraHA -IH0
  3. Confirm that the pair status of the P-VOLs of the GAD pairs has changed to PSUS(Local) and that the pair status of the S-VOLs has changed to SSUS(Block).

    pairdisplay -g oraHA -fcxe -IH0
  4. Power off the primary and secondary storage systems.

Powering on the primary and secondary storage systems

  1. Power on the primary and secondary storage systems.

  2. Confirm that the primary and secondary storage systems and the external storage system for the quorum disks do not have any blocked parts.

    If any parts are blocked, recover them.

  3. Check for SIMs about path blockage, and complete the SIMs.

  4. Confirm that the pair status of the P-VOLs of the GAD pairs is PSUS(Local) and that the pair status of the S-VOLs is SSUS(Block).

    pairdisplay -g oraHA -fcxe -IH0
  5. On the primary storage system, resynchronize the GAD pairs by specifying the primary volume.

    pairresync -g oraHA -IH0
  6. Confirm that the pair status of the P-VOLs and S-VOLs of the GAD pairs has changed to PAIR (Mirror (RL)).

    pairdisplay -g oraHA -fcxe -IH0
  7. Resume I/O from the servers to the primary and secondary storage systems.

Planned power off/on of the primary and external storage systems

If you do not set a volume for the quorum disk, you do not need to power off or on the external storage system because you do not use it.

Perform the procedure for Powering off the primary and external storage systems, and then perform the procedure for Powering on the primary and external storage systems, only when you set a volume for a quorum disk using an external storage system.

Powering off the primary and external storage systems

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

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

  2. On the secondary storage system, swap and suspend the GAD pairs (swap suspension).

    pairsplit -g oraHA -RS -IH1
  3. Confirm that the pair status of the P-VOLs of the GAD pairs has changed to PSUS(Block) and that the pair status of the S-VOLs has changed to SSWS(Local).

    pairdisplay -g oraHA -fcxe -IH1
  4. On the primary and secondary storage systems, disconnect the quorum disks.

    raidcom disconnect external_grp -ldev_id 0x8888 -IH1
    NoteWhen you disconnect a quorum disk, SIM (def0zz) (quorum disk blockade) might be issued (zz: quorum disk ID). If this SIM is issued, complete the SIM after powering on the storage system and reconnecting the quorum disk.
  5. On the primary and secondary storage systems, verify that the quorum disks have been disconnected.

    raidcom get path -path_grp 1 -IH1
  6. Power off the storage system at the primary site and the external storage system.

Powering on the primary and external storage systems

When using GAD pairs, you should know how to properly power on the external storage system with I/O at the primary site.

Procedure

  1. Power on the storage system at the primary site and the external storage system.

  2. Confirm that the primary and secondary storage systems and the external storage system for the quorum disks do not have any blocked parts.

    If any parts are blocked, recover them.

  3. Check for SIMs about path blockage, and complete the SIMs.

  4. On the primary and secondary storage systems, establish connections to the quorum disks.

    raidcom check_ext_storage external_grp -ldev_id 0x8888 -IH1
  5. Confirm that the external storage system is connected correctly.

    (VSP 5000 series)
    raidcom get path -path_grp 1 -IH1
    PHG GROUP STS CM IF MP# PORT WWN PR LUN PHS Serial# PRODUCT_ID LB PM
    1 1-1 NML E D 0 CL5-C 50060e8008000160 1 0 NML 55555 VSP 5000 series N M D
    (VSP Gx00 models and VSP Fx00 models)
    raidcom get path -path_grp 1 -IH1
    PHG GROUP STS CM IF MP# PORT WWN PR LUN PHS Serial# PRODUCT_ID LB PM
    1 1-2 NML E D 0 CL5-C 50060e8007823521 1 0 NML 433333 VSP Gx00 N M
  6. On the primary and secondary storage systems, verify that the connections to the quorum disks have been established.

    raidcom get external_grp -external_grp_id 1-2 -IH1
  7. Confirm that external volumes of the primary and secondary storage systems are recognized as quorum disks.

    raidcom get ldev -ldev_id 0x8888 -IH1
  8. Check for SIMs about quorum disk blockade, and complete the SIMs.

  9. Confirm that the pair status of the P-VOLs of the GAD pairs is PSUS(Block) and that the pair status of the S-VOLs is SSWS(Local).

    pairdisplay -g oraHA -fcxe -IH1
  10. Resynchronize GAD pairs from the secondary storage system by reversing the primary and secondary volumes (swap resync).

    pairresync -g oraHA -swaps -IH1
  11. Confirm that the pair status of the P-VOLs and S-VOLs of the GAD pairs has changed to PAIR (Mirror (RL)).

    pairdisplay -g oraHA -fcxe -IH1
  12. Using the alternate path software, resume I/O from the servers to the storage system at the primary site.

  13. If necessary, reverse the primary and secondary volumes.

Planned power off/on of the secondary and external storage systems

If you do not set a volume for the quorum disk, you do not need to power off or on the external storage system because you do not use it.

Perform the procedure for Powering off the secondary and external storage systems, and then perform the procedure for Powering on the secondary and external storage systems, only when you set a volume for a quorum disk using an external storage system.

Powering off the secondary and external storage systems

  1. Direct server I/O to the storage system at the primary site.

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

  2. On the primary storage system, suspend the GAD pairs by specifying the primary volume.

    pairsplit -g oraHA -IH0
  3. Confirm that the pair status of the P-VOLs of the GAD pairs has changed to PSUS(Local) and that the pair status of the S-VOLs has changed to SSUS(Block).

    pairdisplay -g oraHA -fcxe -IH0
  4. On the primary and secondary storage systems, disconnect the quorum disks.

    raidcom disconnect external_grp -ldev_id 0x9999 -IH0
    NoteWhen you disconnect a quorum disk, SIM (def0zz) (quorum disk blockade) might be issued (zz: quorum disk ID). If this SIM is issued, complete the SIM after powering on the storage system and reconnecting the quorum disk.
  5. On the primary and secondary storage systems, verify that the quorum disks have been disconnected.

    raidcom get path -path_grp 1 -IH0
  6. Power off the storage system at the secondary site and the external storage system.

Powering on the secondary and external storage systems

  1. Power on the storage system at the secondary site and the external storage system.

  2. Confirm that the primary and secondary storage systems and the external storage system for the quorum disks do not have any blocked parts.

    If any parts are blocked, recover them.

  3. Check for SIMs about path blockage, and complete the SIMs.

  4. On the primary and secondary storage systems, establish connections to the quorum disks.

    raidcom check_ext_storage external_grp -ldev_id 0x9999 -IH0
  5. On the primary and secondary storage systems, verify that the connections to the quorum disks have been established.

    raidcom get external_grp -external_grp_id 1-1 -IH0
  6. Confirm that the external volumes of the primary and secondary storage systems are recognized as quorum disks.

    raidcom get ldev -ldev_id 0x9999 -IH0
  7. Check for SIMs about quorum disk blockade, and complete the SIMs.

  8. Confirm that the pair status of the P-VOLs of the GAD pairs is PSUS(Local) and that the pair status of the S-VOLs is SSUS(Block).

    pairdisplay -g oraHA -fcxe -IH0
  9. Resynchronize the GAD pairs from the primary storage system by specifying the primary volume.

    pairresync -g oraHA -IH0
  10. Confirm that the pair status of the P-VOLs and S-VOLs of the GAD pairs has changed to PAIR (Mirror (RL)).

    pairdisplay -g oraHA -fcxe -IH0
  11. Using the alternate path software, resume I/O from the servers to the storage system at the secondary site.

Planned power off/on of all GAD storage systems

If you do not set a volume for the quorum disk, you do not need to power off or on the external storage system because you do not use it.

Perform the procedure for Powering off the primary, secondary, and external storage systems, and then perform the procedure for Powering on the primary, secondary, and external storage systems, only when you set a volume for a quorum disk using an external storage system.

Powering off the primary, secondary, and external storage systems

  1. Using the alternate path software, stop server I/O to the primary and secondary storage systems.

  2. On the primary storage system, suspend the GAD pairs.

    pairsplit -g oraHA -IH0
  3. Confirm that the pair status of the P-VOLs of the GAD pairs has changed to PSUS(Local) and that the pair status of the S-VOLs has changed to SSUS(Block).

    pairdisplay -g oraHA -fcxe -IH0
  4. On the primary and secondary storage systems, disconnect the quorum disks.

    raidcom disconnect external_grp -ldev_id 0x9999 -IH0
    NoteWhen you disconnect a quorum disk, SIM (def0zz) (quorum disk blockade) might be issued (zz: quorum disk ID). If this SIM is issued, complete the SIM after powering on the storage system and reconnecting the quorum disk.
  5. On the primary and secondary storage systems, verify that the quorum disks have been disconnected.

    raidcom get path -path_grp 1 -IH0
  6. Power off the primary and secondary storage systems and the external storage system.

Powering on the primary, secondary, and external storage systems

  1. Power on the primary and secondary storage systems and the external storage system.

  2. Confirm that the primary and secondary storage systems and the external storage system for the quorum disks do not have any blocked parts.

    If any parts are blocked, recover them.

  3. Check for SIMs about path blockage, and complete the SIMs.

  4. On the primary and secondary storage systems, establish connections to the quorum disks.

    raidcom check_ext_storage external_grp -ldev_id 0x9999 -IH0
  5. On the primary and secondary storage systems, verify that the connections to the quorum disks have been established.

    raidcom get external_grp -external_grp_id 1-1 -IH0
  6. Confirm that the external volumes of the primary and secondary storage systems are recognized as quorum disks.

    raidcom get ldev -ldev_id 0x9999 -IH0
  7. Check for SIMs about quorum disk blockade, and complete the SIMs.

  8. Confirm that the pair status of the P-VOLs of the GAD pairs is PSUS(Local) and that the pair status of the S-VOLs is SSUS(Block).

    pairdisplay -g oraHA -fcxe -IH0
  9. Resynchronize the GAD pairs from the primary storage system by specifying the primary volume.

    pairresync -g oraHA -IH0
  10. Confirm that the pair status of the P-VOLs and S-VOLs of the GAD pairs has changed to PAIR (Mirror (RL)).

    pairdisplay -g oraHA -fcxe -IH0
  11. Using the alternate path software, resume I/O from the servers to the storage systems at the primary and secondary sites.

Planned outage of storage systems in a GAD 3DC delta resync environment

Perform the procedure for Powering off the GAD+UR primary storage system, and then perform the procedure for Powering on the GAD+UR primary storage system.

Procedures assume that a volume in an external storage system is used as the quorum disk. If you use a disk in a server as the quorum disk, you do not need to install the external storage system for the quorum disk.

For details about storage system support (models, microcode) for GAD+UR operations, see Requirements and restrictions.

Planned power off/on: primary GAD+UR storage system

Powering off the GAD+UR primary storage system

Use the following procedure to power off the primary storage system.

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.

Powering on the GAD+UR primary storage system

Use the following procedure to power on the primary storage system.

Procedure

  1. Power on the primary storage system.

  2. Confirm that the storage systems do not have any blocked parts.

    If any parts are blocked, recover them.

  3. Check for SIMs about path blockage, and complete the SIMs.

  4. On the GAD secondary storage system, resynchronize the GAD pair by specifying the S-VOL (swap resync).

    Command example: pairresync -g oraHA -swaps -IH1

    A volume on the primary storage system changes to an S-VOL, and a volume on the secondary storage system changes to a P-VOL.

  5. Confirm that the pair statuses are changed as shown in the following table.

    Pair type

    Before the GAD pair resync

    After the GAD pair resync

    P-VOL

    S-VOL

    P-VOL

    S-VOL

    GAD pair

    PSUS (Block)

    SSWS (Local)

    PAIR (Mirror(RL))

    PAIR (Mirror(RL))

    UR delta resync pair

    PSUE1

    SSUS2

    PSUE1

    SSUS2

    UR pair

    PAIR

    PAIR

    PAIR

    PAIR

    Notes:

    1. Device Manager - Storage Navigator displays HOLDING.

    2. Device Manager - Storage Navigator displays HOLD.

  6. Keep updating I/O to the P-VOL or GAD S-VOL for two minutes.

    The information on the system configuration is reported among the primary, GAD secondary, and UR secondary storage systems. At the time, the UR delta resync pair status is changed from PSUE to PSUS. The mirror status of the journal is displayed as PJNS. Confirm that no failure SIMs are displayed.

Next steps

NoteThe GAD P-VOL and S-VOL are now reversed compared to the original configuration before the planned outage. To restore the original configuration, reverse the GAD P-VOL and S-VOL.

Planned power off/on: GAD secondary storage system

Perform the procedure for Powering off the GAD secondary storage system, and then perform the procedure for Powering on the GAD secondary storage system.

Powering off the GAD secondary storage system

Use the following procedure to power off the GAD secondary storage system.

Procedure

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

    Direct server I/O to the primary storage system.

  2. On the primary storage system, suspend the GAD pair by specifying the P-VOL.

    Command example: pairsplit -g oraHA -IH0

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

    Pair type

    Before the GAD pair suspension

    After the GAD pair suspension

    P-VOL

    S-VOL

    P-VOL

    S-VOL

    GAD pair

    PAIR (Mirror(RL))

    PAIR (Mirror(RL))

    PSUS (Local)

    PSUS (Block)

    UR pair

    PAIR

    PAIR

    PAIR

    PAIR

    UR delta resync pair

    PSUS1

    SSUS1

    PSUE2

    SSUS1

    Notes:

    1. Device Manager - Storage Navigator displays HOLD.

    2. Device Manager - Storage Navigator displays HOLDING.

  4. Power off the GAD secondary storage system.

Powering on the GAD secondary storage system

Use the following procedure to power on the GAD secondary storage system.

Procedure

  1. Power on the GAD secondary storage system.

  2. Confirm that the primary and secondary storage systems and the external storage system for the quorum disk do not have any blocked parts.

    If any parts are blocked, recover them.

  3. Check for SIMs about path blockage, and complete the SIMs.

  4. On the primary storage system, resynchronize the GAD pairs by specifying the P-VOL.

    Command example: pairresync -g oraHA -IH0

  5. Confirm that the pair statuses are changed as shown in the following table.

    Pair type

    Before the GAD pair resync

    After the GAD pair resync

    P-VOL

    S-VOL

    P-VOL

    S-VOL

    GAD pair

    PSUS (Local)

    PSUS (Block)

    PAIR (Mirror(RL))

    PAIR (Mirror(RL))

    UR pair

    PAIR

    PAIR

    PAIR

    PAIR

    UR delta resync pair

    PSUE1

    SSUS2

    PSUE1

    SSUS2

    Notes:

    1. Device Manager - Storage Navigator displays HOLDING.

    2. Device Manager - Storage Navigator displays HOLD.

  6. Keep updating I/O to P-VOL or GAD S-VOL for two minutes.

    The information on the system configuration is reported among the primary, GAD secondary, and UR secondary storage systems. At the time, the UR delta resync pair status is changed from PSUE to PSUS. The mirror status of the journal is displayed as PJNS. Confirm that no failure SIMs are displayed.

Planned power off/on: UR secondary storage system

Perform the procedure for Powering off the UR secondary storage system, and then perform the procedure for Powering on the UR secondary storage system.

Powering off the UR secondary storage system

Use the following procedure to power off the UR secondary storage system.

Procedure

  1. On the primary storage system, suspend the UR pairs by specifying the P-VOL.

    Command example: pairsplit -g oraREMOTE -IH0

  2. Confirm that the pair statuses are changed as shown in the following table.

    Pair type

    Before the GAD pair suspension

    After the GAD pair suspension

    P-VOL

    S-VOL

    P-VOL

    S-VOL

    GAD pair

    PAIR (Mirror(RL))

    PAIR (Mirror(RL))

    PAIR (Mirror(RL))

    PAIR (Mirror(RL))

    UR pair

    PAIR

    PAIR

    PSUS

    PSUS

    UR delta resync pair

    PSUS1

    SSUS1

    PSUE2

    SSUS1

    Notes:

    1. Device Manager - Storage Navigator displays HOLD.

    2. Device Manager - Storage Navigator displays HOLDING.

  3. Power off the UR secondary storage system.

Powering on the UR secondary storage system

Use the following procedure to power on the UR secondary storage system.

Procedure

  1. Power on the UR secondary storage system.

  2. Confirm that the primary and secondary storage systems and the external storage system for the quorum disk do not have any blocked parts.

    If any parts are blocked, recover them.

  3. Check for SIMs about path blockage, and complete the SIMs.

  4. On the primary storage system, resynchronize the UR pairs by specifying the P-VOL.

    Command example: pairresync -g oraREMOTE -IH0

  5. Confirm that the pair statuses are changed as shown in the following table.

    Pair type

    Before the GAD pair resync

    After the GAD pair resync

    P-VOL

    S-VOL

    P-VOL

    S-VOL

    GAD pair

    PAIR (Mirror(RL))

    PAIR (Mirror(RL))

    PAIR (Mirror(RL))

    PAIR (Mirror(RL))

    UR pair

    PSUS

    PSUS

    PAIR

    PAIR

    UR delta resync pair

    PSUE1

    SSUS2

    PSUE1

    SSUS2

    Notes:

    1. Device Manager - Storage Navigator displays HOLDING.

    2. Device Manager - Storage Navigator displays HOLD.

  6. Keep updating I/O to P-VOL or GAD S-VOL for two minutes.

    The information on the system configuration is reported among the primary, GAD secondary, and UR secondary storage systems. At the time, the UR delta resync pair status is changed from PSUE to PSUS. The mirror status of the journal is displayed as PJNS. Confirm that no failure SIMs are displayed.

Planned power off/on: external storage system, I/O at primary site (GAD+UR)

If you do not set a volume for the quorum disk, you do not need to power off or on the external storage system because you do not use it.

Perform the procedure for Powering off the external storage system, I/O at primary site (GAD+UR), and then perform the procedure for Powering on the external storage system, I/O at primary site (GAD+UR), only when you set a volume for a quorum disk using an external storage system.

Powering off the external storage system, I/O at primary site (GAD+UR)

Use the following procedure to power off the external storage system when server I/O continues to the primary storage system.

Procedure

  1. On the primary and GAD secondary storage systems, disconnect the quorum disks.

    Command example: raidcom disconnect external_grp -ldev_id 0x9999 -IH0

    NoteWhen you disconnect a quorum disk, SIM (def0zz) (quorum disk blockade) might be issued (zz: quorum disk ID). If this SIM is issued, complete the SIM after powering on the storage system and reconnecting the quorum disk.
  2. Confirm that the quorum disks are disconnected on the primary and secondary storage systems.

    Command example: raidcom get path -path_grp 1 -IH0
  3. Power off the external storage system.

Powering on the external storage system, I/O at primary site (GAD+UR)

Use the following procedure to power on the external storage system when server I/O continues to the primary storage system.

Procedure

  1. Power on the external storage system.

  2. Confirm that the primary and secondary storage systems and the external storage system for the quorum disk do not have any blocked parts.

    If any parts are blocked, recover them.

  3. Check for SIMs about path blockage, and complete the SIMs.

  4. On the primary and GAD secondary storage systems, establish the connections to the quorum disks.

    Command example: raidcom check_ext_storage external_grp -ldev_id 0x9999 -IH0

  5. On the primary and GAD secondary storage systems, confirm that the connections to the quorum disks have been established.

    Command example: raidcom get external_grp -external_grp_id 1-1 -IH0

  6. Confirm that the external volumes of the primary and GAD secondary storage systems are recognized as quorum disks.

    Command example: raidcom get ldev -ldev_id 0x9999 -IH0

  7. On the primary and GAD secondary storage systems, check for SIMs about quorum disk blockade, and complete the SIMs.

Planned power off/on: external storage system, I/O at secondary site (GAD+UR)

If you do not set a volume for the quorum disk, you do not need to power off or on the external storage system because you do not use it.

Perform the procedure for Powering off external storage system, I/O at secondary site (GAD+UR), and then perform the procedure for Powering on external storage system, I/O at secondary site (GAD+UR), only when you set a volume for a quorum disk using an external storage system.

Powering off external storage system, I/O at secondary site (GAD+UR)

Use the following procedure to power off the external storage system when server I/O continues to the GAD storage system.

Procedure

  1. On the primary and GAD secondary storage systems, disconnect the quorum disks.

    Command example: raidcom disconnect external_grp -ldev_id 0x8888 -IH1

    NoteWhen you disconnect a quorum disk, SIM (def0zz) (quorum disk blockade) might be issued (zz: quorum disk ID). If this SIM is issued, complete the SIM after powering on the storage system and reconnecting the quorum disk.
  2. Confirm that the quorum disks are disconnected on the primary and secondary storage systems.

    Command example: raidcom get path -path_grp 1 -IH0
  3. Power off the external storage system.

Powering on external storage system, I/O at secondary site (GAD+UR)

When using GAD pairs, you should know how to properly power on the external storage system when server I/O continues to the GAD storage system.

Procedure

  1. Power on the external storage system.

  2. Confirm that the primary and secondary storage systems and the external storage system for the quorum disk do not have any blocked parts.

    If any parts are blocked, recover them.

  3. Check for SIMs about path blockage, and complete the SIMs.

  4. On the primary and GAD secondary storage systems, establish the connections to the quorum disks.

    Command example: raidcom check_ext_storage external_grp -ldev_id 0x8888 -IH1

  5. Confirm that the external storage system is connected correctly.

    (VSP 5000 series)
    raidcom get path -path_grp 1 -IH1
    PHG GROUP STS CM IF MP# PORT WWN PR LUN PHS Serial# PRODUCT_ID LB PM
    1 1-2 NML E D 0 CL5-C 50060e8007823521 1 0 NML 333333 VSP 5000 series N M
    (VSP Gx00 models and VSP Fx00 models)
    raidcom get path -path_grp 1 -IH1
    PHG GROUP STS CM IF MP# PORT WWN PR LUN PHS Serial# PRODUCT_ID LB PM
    1 1-2 NML E D 0 CL5-C 50060e8007823521 1 0 NML 433333 VSP Gx00 N M
  6. On the primary and GAD secondary storage systems, confirm that the connections to the quorum disks have been established.

    Command example: raidcom get external_grp -external_grp_id 1-2 -IH1

  7. Confirm that the external volumes of the primary and GAD secondary storage systems are recognized as quorum disks.

    Command example: raidcom get ldev -ldev_id 0x8888 -IH1

  8. On the primary and GAD secondary storage systems, check for SIMs about quorum disk blockade, and complete the SIMs.