HP Surestore E Disk Array XP256 HP XP P9000 External Storage Access Manager Us - Page 40

Changing Continuous Access Synchronous pairs to ESAM pairs, Requirements, Procedure

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10. Verify that the operation completes successfully (changes to SMPL status). 11. The device identifier for one or both pair volumes changes when the pair is released. Therefore you should enable host recognition of the volumes, using one of the following methods: • Run the device recognition command provided by the operating system on the host. For more information, see the following table. • Reboot the host. Device recognition required for S-VOL P-VOL and S-VOL Determined by • Both volumes are on P9500 • P-VOL is on XP24000 and S-VOL is on P9500. P-VOL is on P9500 and S-VOL is on XP24000. Changing Continuous Access Synchronous pairs to ESAM pairs You can convert a Continuous Access Synchronous pair to an ESAM pair. Requirements Make sure that the following requirements are met to ensure the pair can be changed correctly without errors or failures: • ESAM system requirements must be met. • The microcode version of the primary and secondary storage systems must be DKCMAIN 70-01-62-XX/XX or later. • A quorum disk ID must be registered. • The Continuous Access Synchronous pair must not be registered to a consistency group. • CU Free are specified on the primary and secondary storage systems when the Continuous Access Synchronous pair was created. • The P-VOL is in the primary storage system. If the S-VOL is in the primary storage system, run the horctakeover command on the S-VOL to reverse the P-VOL and the S-VOL of the pair. CAUTION: If this operation fails, check Continuous Access Synchronous pair options to make sure that they have not changed. A failure can cause unexpected changes, for example, the P-VOL fence level could change from Data to Never. Procedure 1. Access the MCU in RWC, then click Actions > Remote Copy > Continuous Access Synchronous > Pair Operation. 2. Make sure that you are in the modify mode. 3. In the Pair Operation window tree, select a CU group, CU, port, or host group where the Continuous Access Synchronous P-VOL belongs. 4. Split the Continuous Access Synchronous pairs that you want to convert to ESAM pairs. 5. On the Pairsplit -r dialog box, specify parameters you want and then click Set. 6. On the Pair Operation window, verify the setting for Preview and click Apply. 7. Verify that the pair status is PSUS. 8. In the list, select and right-click the Continuous Access Synchronous P-VOL, and then click Pairresync. 40 Working with volume pairs

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10. Verify that the operation completes successfully (changes to SMPL status).
11.
The device identifier for one or both pair volumes changes when the pair is released. Therefore
you should enable host recognition of the volumes, using one of the following methods:
•
Run the device recognition command provided by the operating system on the host.
For more information, see the following table.
•
Reboot the host.
Determined by
Device recognition required for
S-VOL
•
Both volumes are on P9500
•
P-VOL is on XP24000 and S-VOL is on P9500.
P-VOL is on P9500 and S-VOL is on XP24000.
P-VOL and S-VOL
Changing Continuous Access Synchronous pairs to ESAM pairs
You can convert a Continuous Access Synchronous pair to an ESAM pair.
Requirements
Make sure that the following requirements are met to ensure the pair can be changed correctly
without errors or failures:
•
ESAM system requirements must be met.
•
The microcode version of the primary and secondary storage systems must be DKCMAIN
70-01-62-XX/XX or later.
•
A quorum disk ID must be registered.
•
The Continuous Access Synchronous pair must not be registered to a consistency group.
•
CU Free are specified on the primary and secondary storage systems when the Continuous
Access Synchronous pair was created.
•
The P-VOL is in the primary storage system. If the S-VOL is in the primary storage system, run
the
horctakeover
command on the S-VOL to reverse the P-VOL and the S-VOL of the pair.
CAUTION:
If this operation fails, check Continuous Access Synchronous pair options to make
sure that they have not changed. A failure can cause unexpected changes, for example, the P-VOL
fence level could change from
Data
to
Never
.
Procedure
1.
Access the MCU in RWC, then click
Actions > Remote Copy > Continuous Access Synchronous
> Pair Operation
.
2.
Make sure that you are in the modify mode.
3.
In the
Pair Operation
window tree, select a CU group, CU, port, or host group where the
Continuous Access Synchronous P-VOL belongs.
4.
Split the Continuous Access Synchronous pairs that you want to convert to ESAM pairs.
5.
On the
Pairsplit -r
dialog box, specify parameters you want and then click
Set
.
6.
On the
Pair Operation
window, verify the setting for
Preview
and click
Apply
.
7.
Verify that the pair status is PSUS.
8.
In the list, select and right-click the Continuous Access Synchronous P-VOL, and then click
Pairresync
.
40
Working with volume pairs