Table 82 Using a Delta Resync Configuration (continued)
SeeDescriptionTarget
Maintenance or
FailureNo.
(Primary > Remote).
During recovery, the
Cnt Ac-S Z copy pairs
and delta resync pairs
must be deleted and
then recreated.
Operating procedure
during a local site
Suspend Cnt Ac-S Z
copy pairs, and then
Local site storage
system failure
(nonvolatile)
10
storage system failure
(nonvolatile)
change the
configuration to a
2DC configuration
(Primary > Remote).
Operating procedure
during a remote site
After error recovery,
the Cnt Ac-J Z copy
Remote site storage
system failure (volatile)
11
storage system failure
(volatile)
pairs and delta resync
pairs must be deleted
and recreated.
Operating procedure
during a remote site
After error recovery,
resynchronize Cnt Ac-J
Z copy pairs.
Remote site storage
system failure
(nonvolatile)
12
storage system failure
(nonvolatile)
Primary site host
failure
Perform a delta
resync, and then
Primary site host
failure
13
change the
configuration to a
3DC Multi-Target
configuration in which
the operation is
performed from the
local site (Local >
Primary, Local >
Remote).
Operating procedure
during a path failure
Suspend Cnt Ac-S Z
copy pairs, and then
Path failure between
the Primary > Local
storage systems
14
between the primarychange the
site storage systemconfiguration to a
and the local site
storage system
2DC configuration
(Primary > Remote).
NOTE: A volatile storage system failure is one in which the storage system memory enters a
volatile state because of the failure, wherein copy pair information, as well as data, is completely
lost, and the hardware information must be configured.
This section explains the maintenance and troubleshooting procedures for a Delta Resync
configuration.
The figures in the procedures in this section use the following legend:
The itemized lists under the figures in the procedures describe the commands that must be executed
in the procedures.
Using a Delta Resync Configuration 299
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