HP XP P9500 Storage - Manual (Page 62)

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MU# for HORC/Continuous Access Journal: Defines the mirror unit number (0 - 3) of one of
four possible HORC/Cnt Ac-J bitmap associations for an LDEV. If this number is omitted, it is
assumed to be zero (0). The Continuous Access Journal mirror description is described in the
MU# column by adding “h” in order to identify identical LUs as the mirror descriptor for Cnt
Ac-J. The MU# for HORC must be specified “blank” as “0”. The mirror description for HORC
is only one, but Cnt Ac-J will have four mirrors, as shown below.
S-VOL P-VOL SMPL State/
Feature
MU#h1 - h3 MU#0 MU#h1 - h3 MU#0 MU#h1 - h3 MU#0
Not Valid Valid Not Valid Valid Not Valid Valid Continuous Access
Synchronous
Valid Valid Valid Valid Valid Valid Continuous Access
Journal
(4) HORCM_INST
The instance parameter (HORCM_INST) defines the network address (IP address) of the remote
server (active or standby). It is used to see or change the status of the paired volume in the remote
server (active or standby). When the primary volume is shared by two or more servers, there are
two or more remote servers using the secondary volume. Thus, it is necessary to describe the
addresses of all of these servers.
The following values are defined in the HORCM_INST parameter:
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dev_group: The server name described in dev_group of HORC_DEV.
•
ip_address: The network address of the specified remote server.
•
service: The port name assigned to the HORCM communication path (registered in the
/etc/services file). If a port number is specified instead of a port name, the port number is
used.
When HORCM has two or more network addresses on different subnets for communication, the
ip_address of HORCM_MON must be NONE. This configuration for multiple networks can be
found using raidqry -r <group> command option on each host. The current network address of
HORCM can be changed using horcctl -NC <group> on each host.
Figure 14 Configuration for multiple networks
For example:
62 Sample configuration definition files