HP XP P9500 Storage User Manual
Page 538
Table 113 Using a 4x4x4 Delta Resync configuration
See:
Description
Target
Maintenance or
failure
No.
Execute Delta Resync, and then change the configuration to a
4x4 configuration that originates from the local site (Local ->
Remote).
Primary site
storage system
maintenance
Maintenance
1
Suspend Cnt Ac-S Z copy pairs by using the Cnt Ac-S Z
Consistency Preservation Function, and then change the
Local site
storage system
maintenance
2
configuration to a 4x4 configuration that originates from the
primary site (Primary -> Remote).
Suspend Cont AC-J Z copy pairs (Primary -> Remote), and then
change the configuration to a 4x4 configuration that originates
from the primary site (Primary -> Local).
Remote site
storage system
maintenance
3
Execute Delta Resync, and then change the configuration to a
4x4x4 Delta Resync configuration that originates from the local
site (Local -> Primary and Local -> Remote).
Primary site host
maintenance
4
--
Operation in a 4x4x4 Delta Resync configuration is not affected.
Local site host
maintenance
5
--
Operation in a 4x4x4 Delta Resync configuration is not affected.
Remote site host
maintenance
6
Execute Delta Resync, and then change the configuration to a
4x4 configuration that originates from the local site (Local ->
Primary site
storage system
Failure
7
Remote). During recovery, the Cont AC-J Z copy pairs for the
failed volume must be deleted and re-created.
failure (with
information lost
from memory)
Execute Delta Resync, and then change the configuration to a
4x4 configuration that originates from the local site (Local ->
Remote).
Primary site
storage system
failure (with no
8
information lost
from memory)
Suspend Cnt Ac-S Z copy pairs by using the Cnt Ac-S Z
Consistency Preservation Function. During recovery, the Cnt Ac-S
Local site
storage system
9
Z copy pairs and Cont AC-J Z copy pairs for the failed volume
must be deleted and re-created.
failure (with
information lost
from memory)
Suspend Cnt Ac-S Z copy pairs by using the Cnt Ac-S Z
Consistency Preservation Function, and then resynchronize the
Cnt Ac-S Z copy pair.
Local site
storage system
failure (with no
10
information lost
from memory)
After error recovery, delete the Cont AC-J Z copy pairs (Primary
-> Remote and Local -> Remote) whose S-VOL is located in the
Remote site
storage system
11
storage system in which the failure occurred, and then re-register
the EXCTG.
failure (with
information lost
from memory)
After error recovery, resynchronize the Cnt Ac-J Z copy pairs
(Primary -> Remote and Local -> Remote) whose S-VOL is located
in the storage system in which the failure occurred.
Remote site
storage system
failure (with no
12
information lost
from memory)
538 Maintenance and troubleshooting operations