HP XP Racks - Manual (Page 63)

•
MU# for Continuous Access Synchronous/Continuous Access Journal: Defines the mirror unit
number (0 - 3) if using redundant mirror for the identical LU on Continuous Access
Synchronous/Continuous Access Journal. 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" to identify identical LUs as the mirror descriptor for Cnt Ac-J. The MU# for
Continuous Access Synchronous can be specified "0" only. The mirror description for
Continuous Access Synchronous 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 refer to 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:
•
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.
Sample configuration definition files 63