HP XP P9500 Storage - Manual (Page 387)

Operating procedure during a path failure between the storage systems at the primary
site and remote site 1, or at the primary site and remote site 2
The following are the operating procedures that must be performed when a path failure occurs
between the storage systems at the primary site and remote site 1, or at the primary site and remote
site 2.
Preparing
If a path failure occurs between the storage systems at the primary site and remote site 1 or at the
primary site and remote site 2, perform the same preparatory procedure as the one used when a
volatile failure occurs in the storage system at remote site 1 or remote site 2. See
“Preparing”
(page 376) in “Operating procedure during a storage system failure (volatile) at remote site 1 or
2” (page 376) .
Recovering
If a path failure occurs between the storage systems at the primary site and remote site 1 or at the
primary site and remote site 2, perform the same recovery procedure as the one used when a
volatile failure occurs in the storage system at remote site 1 or remote site 2. See
“Recovering”
(page 376) in “Operating procedure during a storage system failure (volatile) at remote site 1 or
2” (page 376) .
Using a Delta Resync Configuration
Table 102 (page 387) describes maintenance and troubleshooting operations for a delta resync
configuration.
Table 102 Using a Delta Resync Configuration
See Description Target
Maintenance or
Failure
No.
“Performing Primary
Site Storage System Perform a delta
resync, and then Primary site storage
system maintenance Maintenance 1
Maintenance”
(page 389) change the
configuration to a
2DC configuration
(Local
→ Remote).
“Performing Local Site
Storage System Suspend Cnt Ac-S Z
copy pairs, and then Local site storage
system maintenance 2
Maintenance”
(page 395) change the
configuration to a
2DC configuration
(Primary
→ Remote).
“Performing Remote
Site Storage System Suspend Cnt Ac-J Z
copy pairs, and then Remote site storage
system maintenance 3
Maintenance”
(page 397) change the
configuration to a
2DC configuration
(Primary
→ Local).
“Performing Primary
Site Host Perform a Delta
Resync, and then Primary site host
maintenance 4
Maintenance”
(page 399) change the
configuration to a
Delta Resync
configuration in which
operation is performed
from the local site
(Local
→ Primary,
Local
→ Remote).
Using a Delta Resync Configuration 387