Performing primary storage system maintenance, Failover – HP XP Racks User Manual

Page 455

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Table 111 Differences in Functionality Between the Commands for Detecting HyperSwaps

Note

Cause of
HyperSwap errors

How to detect
HyperSwaps

To detect HyperSwaps

Command name

(failures or
maintenance)

You need to use a script
to check whether a

Can be
distinguished

Monitor the HyperSwap
completion messages.

Business Continuity
Manager must be

YKCONMSG

HyperSwap has been

running on the same
host as TPC-R.

executed for the target
copy group, because all
copy groups are subject
to the HyperSwap
monitoring operation.

You can specify a copy
group to be monitored.

Cannot be
distinguished

Monitors the status
transitions or the copy
pair or volume.

Business Continuity
Manager does not
need to run on the
same host as TPC-R.

YKEWAIT

To enable Business Continuity Manager to detect HyperSwaps, use either or both of the commands
to monitor the Cnt Ac-S copy pair with the HyperSwap attribute.

For details on the commands, see the HP XP7 for Business Continuity Manager Reference Guide.

In addition, load a route list in which a route from the local storage system to the remote storage
system is defined so that information about the remote storage system can be acquired.

Figure 127 (page 455)

shows an operational image of the 2DC configuration with HyperSwap and

Cnt Ac-J Z.

Figure 127 Operational Image of a 2DC Configuration with HyperSwap and Cnt Ac-J Z

Performing primary storage system maintenance

The following are the procedures for performing primary storage system maintenance.

Failover

To perform a failover:
1.

Use TPC-R on the primary host to execute HyperSwap.

The copy direction of Cnt Ac-S copy pairs with the HyperSwap attribute is reversed, and the
groups are moved from the DUPLEX status to the SWAPPING status.

Using a 2DC configuration with HyperSwap and Continuous Access Journal Z 455

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