HP XP P9500 Storage - Manual (Page 140)

are also used to copy volumes in server failover configurations and to restore the volumes to their
original state after a server failover has been recovered.
•
Pair creation command: Creates a new volume pair. Volume pairs can be created in units of
volume or group.
•
Pair splitting command: Splits a volume pair and allows read and write access to the secondary
volume.
•
Pair resynchronization command: Resynchronizes a split volume pair based on the primary
volume. The primary volume remains accessible during resynchronization.
◦ Swaps(p) option (Continuous Access Synchronous only). Swaps volume from the
S-VOL(P-VOL) to the P-VOL(S-VOL) when the S-VOL(P-VOL) is in the suspended state and
resynchronizes the NEW_S-VOL based on the NEW_P-VOL. At the result of this operation,
the volume attributes of the host of reference (local host) are used as the attributes for the
NEW_P-VOL(S-VOL).
•
Event waiting command: Used to wait for the completion of volume pair creation or
resynchronization and to check the pair status.
•
Pair status display and configuration confirmation command: Displays the pair status and
configuration of the volume pairs and is used for checking the completion of pair creation or
pair resynchronization.
Figure 50 Continuous Access Synchronous remote system configuration
Legend
•
HORCM: The manager is a daemon process, executes multiple commands,
charges to a storage system through itself. Among the managers are connected
by UDP, remotely execute a command among the servers mutually.
•
Command: A command provisioned by RAID Manager.
Continuous Access Synchronous local commands
Continuous Access Synchronous local system configuration (page 141) illustrates a Continuous
Access Synchronous local configuration. The RAID Manager Continuous Access Synchronous local
commands assist the system operation with volume backups among UNIX servers and their operating
system management functions. The Continuous Access Synchronous local commands perform the
same functions as the remote commands but within the same RAID storage system instead of
between two RAID storage systems.
140 Data replication operations with RAID Manager