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
Powering off the primary storage system
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.
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
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
Power off the storage system at the primary site.
Powering on the primary storage system
Power on the storage system at the primary site.
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.
Check for SIMs about path blockage, and delete the SIMs.
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
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
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
Using the alternate path software, resume I/O from the servers to the storage system at the primary site.
If necessary, reverse the primary and secondary volumes.
Planned power off/on: secondary storage system
Powering off the secondary storage system
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.
On the storage system at the primary site, suspend the GAD pairs by specifying the primary volume.
pairsplit -g oraHA -r -IH0
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
Power off the storage system at the secondary site.
Powering on the secondary storage system
Power on the storage system at the secondary site.
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.
Check for SIMs about path blockage, and delete the SIMs.
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
On the storage system at the primary site, resynchronize the GAD pairs by specifying the primary volume.
pairresync -g oraHA -IH0
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
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
Powering off the external storage system, I/O at primary site
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 storage system at the secondary site.
On the storage system at the primary site, suspend the GAD pairs by specifying the primary volume.
pairsplit -g oraHA -r -IH0
Confirm that the pair status of 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
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, delete the SIM after powering on the storage system and reconnecting the quorum disk.On the primary and secondary storage systems, confirm that the quorum disk has been disconnected.
raidcom get path -path_grp 1 -IH0
Power off the external storage system.
Powering on the external storage system, I/O at primary site
Power on the external storage system.
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.
Check for SIMs about path blockage, and delete the SIMs.
On the primary and secondary storage systems, establish the connections to the quorum disks.
raidcom check_ext_storage external_grp -ldev_id 0x9999 -IH0
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
Confirm that the external volumes of the primary and secondary storage systems are recognized as quorum disks.
raidcom get ldev -ldev_id 0x9999 -IH0
Check for SIMs about quorum disk blockade, and delete the SIMs.
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
Resynchronize the GAD pairs on the primary storage system by specifying the primary volume.
pairresync -g oraHA -IH0
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
Using the alternate path software, resume server I/O to the storage system at the secondary site.
Planned power off/on of the external storage system, I/O at secondary site
Powering off the external storage system, I/O at secondary site
Direct server I/O to the storage system at the secondary site.
Using the alternate path software, stop I/O from the servers to the storage system at the primary site.
On the secondary storage system, suspend the GAD pairs to change the pair status of the S-VOLs to SSWS (swap suspension).
pairsplit -g oraHA -RS -IH1
Verify 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
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, delete the SIM after powering on the storage system and reconnecting the quorum disk.On the primary and secondary storage systems, confirm that the quorum disks have been disconnected.
raidcom get path -path_grp 1 -IH1
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.
Power on the external storage system.
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.
Check for SIMs about path blockage, and delete the SIMs.
On the primary and secondary storage systems, establish connections to the quorum disks.
raidcom check_ext_storage external_grp -ldev_id 0x8888 -IH1
Confirm that the external storage system is connected correctly.
(VSP G1x00 and VSP F1500)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 G1000 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
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
Confirm that the external volumes of the primary and secondary storage systems are recognized as quorum disks.
raidcom get ldev -ldev_id 0x8888 -IH1
Check for SIMs about quorum disk blockade, and delete the SIMs.
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
Resynchronize the GAD pairs from the secondary storage system by reversing the primary and secondary volumes (swap resync).
pairresync -g oraHA -swaps -IH1
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
Using the alternate path software, resume I/O from the servers to the storage system at the primary site.
If necessary, reverse the primary and secondary volumes.
Planned power off/on: primary and secondary storage systems
Powering off the primary and secondary storage systems
Stop server I/O to the primary and secondary storage systems.
On the primary storage system, suspend the GAD pairs by specifying the primary volume.
pairsplit -g oraHA -r -IH0
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
Power off the primary and secondary storage systems.
Powering on the primary and secondary storage systems
Power on the primary and secondary storage systems.
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.
Check for SIMs about path blockage, and delete the SIMs.
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
On the primary storage system, resynchronize the GAD pairs by specifying the primary volume.
pairresync -g oraHA -IH0
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
Resume I/O from the servers to the primary and secondary storage systems.
Planned power off/on of the primary and external storage systems
Powering off the primary and external storage systems
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.
On the secondary storage system, swap and suspend the GAD pairs (swap suspension).
pairsplit -g oraHA -RS -IH1
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
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, delete the SIM after powering on the storage system and reconnecting the quorum disk.On the primary and secondary storage systems, verify that the quorum disks have been disconnected.
raidcom get path -path_grp 1 -IH1
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.
Power on the storage system at the primary site and the external storage system.
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.
Check for SIMs about path blockage, and delete the SIMs.
On the primary and secondary storage systems, establish connections to the quorum disks.
raidcom check_ext_storage external_grp -ldev_id 0x8888 -IH1
Confirm that the external storage system is connected correctly.
(VSP G1x00 and VSP F1500)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 G1000 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
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
Confirm that external volumes of the primary and secondary storage systems are recognized as quorum disks.
raidcom get ldev -ldev_id 0x8888 -IH1
Check for SIMs about quorum disk blockade, and delete the SIMs.
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
Resynchronize GAD pairs from the secondary storage system by reversing the primary and secondary volumes (swap resync).
pairresync -g oraHA -swaps -IH1
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
Using the alternate path software, resume I/O from the servers to the storage system at the primary site.
If necessary, reverse the primary and secondary volumes.
Planned power off/on of the secondary and external storage systems
Powering off the secondary and external storage systems
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.
On the primary storage system, suspend the GAD pairs by specifying the primary volume.
pairsplit -g oraHA -r -IH0
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
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, delete the SIM after powering on the storage system and reconnecting the quorum disk.On the primary and secondary storage systems, verify that the quorum disks have been disconnected.
raidcom get path -path_grp 1 -IH0
Power off the storage system at the secondary site and the external storage system.
Powering on the secondary and external storage systems
Power on the storage system at the secondary site and the external storage system.
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.
Check for SIMs about path blockage, and delete the SIMs.
On the primary and secondary storage systems, establish connections to the quorum disks.
raidcom check_ext_storage external_grp -ldev_id 0x9999 -IH0
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
Confirm that the external volumes of the primary and secondary storage systems are recognized as quorum disks.
raidcom get ldev -ldev_id 0x9999 -IH0
Check for SIMs about quorum disk blockade, and delete the SIMs.
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
Resynchronize the GAD pairs from the primary storage system by specifying the primary volume.
pairresync -g oraHA -IH0
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
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
Powering off the primary, secondary, and external storage systems
Using the alternate path software, stop server I/O to the primary and secondary storage systems.
On the primary storage system, suspend the GAD pairs.
pairsplit -g oraHA -r -IH0
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
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, delete the SIM after powering on the storage system and reconnecting the quorum disk.On the primary and secondary storage systems, verify that the quorum disks have been disconnected.
raidcom get path -path_grp 1 -IH0
Power off the primary and secondary storage systems and the external storage system.
Powering on the primary, secondary, and external storage systems
Power on the primary and secondary storage systems and the external storage system.
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.
Check for SIMs about path blockage, and delete the SIMs.
On the primary and secondary storage systems, establish connections to the quorum disks.
raidcom check_ext_storage external_grp -ldev_id 0x9999 -IH0
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
Confirm that the external volumes of the primary and secondary storage systems are recognized as quorum disks.
raidcom get ldev -ldev_id 0x9999 -IH0
Check for SIMs about quorum disk blockade, and delete the SIMs.
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
Resynchronize the GAD pairs from the primary storage system by specifying the primary volume.
pairresync -g oraHA -IH0
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
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
You can perform planned outages of storage systems in a GAD 3DC delta resync (GAD+UR) environment.
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
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.
On the GAD secondary storage system, suspend the GAD pairs by specifying the S-VOL (swap suspension).
Command example:
pairsplit -g oraHA -RS -IH1Confirm 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:
- Device Manager - Storage Navigator displays HOLDING.
- Device Manager - Storage Navigator displays HOLD.
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
Power on the primary storage system.
Confirm that the storage systems do not have any blocked parts.
If any parts are blocked, recover them.
Check for SIMs about path blockage, and delete the SIMs.
On the GAD secondary storage system, resynchronize the GAD pair by specifying the S-VOL (swap resync).
Command example:
pairresync -g oraHA -swaps -IH1A volume on the primary storage system changes to an S-VOL, and a volume on the secondary storage system changes to a P-VOL.
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:
- Device Manager - Storage Navigator displays HOLDING.
- Device Manager - Storage Navigator displays HOLD.
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
Planned power off/on: GAD secondary storage system
Powering off the GAD secondary storage system
Use the following procedure to power off the GAD secondary storage system.
Procedure
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.
On the primary storage system, resynchronize the GAD pair by specifying the P-VOL.
Command example:
pairresync -g oraHA -IH0Confirm 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:
- Device Manager - Storage Navigator displays HOLD.
- Device Manager - Storage Navigator displays HOLDING.
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
Power on the GAD secondary storage system.
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.
Check for SIMs about path blockage, and delete the SIMs.
On the primary storage system, resynchronize the GAD pairs by specifying the P-VOL.
Command example:
pairresync -g oraHA -IH0Confirm 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:
- Device Manager - Storage Navigator displays HOLDING.
- Device Manager - Storage Navigator displays HOLD.
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
Powering off the UR secondary storage system
Use the following procedure to power off the UR secondary storage system.
Procedure
On the primary storage system, suspend the UR pairs by specifying the P-VOL.
Command example:
pairsplit -g oraREMOTE -IH0Confirm 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:
- Device Manager - Storage Navigator displays HOLD.
- Device Manager - Storage Navigator displays HOLDING.
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
Power on the UR secondary storage system.
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.
Check for SIMs about path blockage, and delete the SIMs.
On the primary storage system, resynchronize the UR pairs by specifying the P-VOL.
Command example:
pairresync -g oraREMOTE -IH0Confirm 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:
- Device Manager - Storage Navigator displays HOLDING.
- Device Manager - Storage Navigator displays HOLD.
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)
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
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.
On the primary storage system, resynchronize the GAD pair by specifying the P-VOL.
Command example:
pairresync -g oraHA -IH0Confirm 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:
- Device Manager - Storage Navigator displays HOLD.
- Device Manager - Storage Navigator displays HOLDING.
On the primary and GAD secondary storage systems, disconnect the quorum disks.
Command example:
raidcom disconnect external_grp -ldev_id 0x9999 -IH0NoteWhen you disconnect a quorum disk, SIM (def0zz) (quorum disk blockade) might be issued (zz: quorum disk ID). If this SIM is issued, delete the SIM after powering on the storage system and reconnecting the quorum disk.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
Power on the external storage system.
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.
Check for SIMs about path blockage, and delete the SIMs.
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 -IH0On 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 -IH0Confirm 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 -IH0On the primary and GAD secondary storage systems, check for SIMs about quorum disk blockade, and delete the SIMs.
Resynchronize the GAD pairs on the primary storage system by specifying the P-VOL.
Command example:
pairresync -g oraHA -IH0Confirm 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:
- Device Manager - Storage Navigator displays HOLDING.
- Device Manager - Storage Navigator displays HOLD.
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 secondary site (GAD+UR)
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
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.
On the GAD secondary storage system, suspend the GAD pairs by specifying the S-VOL (swap suspension).
Command example:
pairsplit -g oraHA -RS -IH1Confirm 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:
- Device Manager - Storage Navigator displays HOLDING.
- Device Manager - Storage Navigator displays HOLD.
On the primary and GAD secondary storage systems, disconnect the quorum disks.
Command example:
raidcom disconnect external_grp -ldev_id 0x8888 -IH1NoteWhen you disconnect a quorum disk, SIM (def0zz) (quorum disk blockade) might be issued (zz: quorum disk ID). If this SIM is issued, delete the SIM after powering on the storage system and reconnecting the quorum disk.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
Power on the external storage system.
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.
Check for SIMs about path blockage, and delete the SIMs.
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 -IH1Confirm that the external storage system is connected correctly.
(VSP G1x00 and VSP F1500)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 G1000 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
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 -IH1Confirm 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 -IH1On the primary and GAD secondary storage systems, check for SIMs about quorum disk blockade, and delete the SIMs.
Resynchronize the GAD pairs on the GAD secondary storage system by specifying the S-VOL (swap resync).
Command example:
pairresync -g oraHA -swaps -IH1A volume on the primary storage system changes to an S-VOL, and a volume on the secondary storage system changes to a P-VOL.
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:
- Device Manager - Storage Navigator displays HOLDING.
- Device Manager - Storage Navigator displays HOLD.
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.
Next steps