HP XP7 Storage User Manual
Page 17
Table 1 General system requirements (continued)
Requirement
Item
Continuous Access Journal Z
•
Must be installed on primary and secondary XP7 systems.
•
License keys required.
•
Cnt Ac-J and Cnt Ac-J Z can coexist in the same storage system.
•
For information on expired licenses or exceeding licensed capacity, see the HP
XP7 Remote Web Console User Guide.
Other licenses required
•
Continuous Access Synchronous Z is required, whether or not Cnt Ac-S Z volumes
are shared with Cnt Ac-J Z.
•
Disaster Recovery Extended. Used for 3DC configurations and Cnt Ac-J Z
operations in multiple primary and secondary storage systems.
•
Dynamic Provisioning. DP-VOLs are required for journal volumes.
Interfaces
•
Remote Web Console:
Must be LAN-attached to the primary system.
◦
◦
Not required on the secondary system, but recommended in order to change
Cnt Ac-J Z parameters and access the S-VOL for disaster recovery and
maintenance.
◦
The following roles are required:
Storage Administrator (Remote Copy), to perform pair operations
Storage Administrator (System Resource Management), to configure settings
•
Business Continuity Manager
◦
- Optional
◦
- Command device required
The track format for the P-VOL and S-VOL must meet the following requirements:
Disk Track Format
•
The Cnt Ac-S Z P-VOL and S-VOL must have the same track format.
•
Record zero (R0) must be standard format, with key length of zero and data
length of eight. The primary system aborts the initial copy operation if R0 is not
standard format.
•
The CCHH (logical cylinder address and logical head address) of R0 must be
identical to the physical cylinder address and physical head address of the
track.
•
The CCHH of each user record in a track must be unique.
For supported OS versions, see the HP SPOCK website:
for the latest information.
Supported mainframe host
platforms
Also, note the following:
•
Optional error report communications (ERC) function requires MVS/DFP 3.2.0
or later.
•
If the primary and/or secondary systems consist of several CPU complexes, a
SYSPLEX timer is required to provide a common time reference for the host I/O
time stamping function. However, the z/Linux operating system does not support
a SYSPLEX timer. As a result, I/O from the z/Linux host is not consistent. Also,
journal consistency is not maintained.
Fibre channel with either direct and switch connections.
Data path
When both systems are XP7, you can use multiple path groups. This is done by
registering path groups with multiple path group IDs in the same storage system.
But note that only one path group can be specified for a mirror. Up to eight paths
can be registered in one path group.
System requirements
17