HP XP P9500 Storage User Manual
Page 18
Table 1 General system requirements (continued)
Requirement
Item
Supported mainframe host
platforms
•
MVS
•
OS/390
•
z/OS
•
z/VM
•
z/Linux
Also, please observe 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.
Contact HP Technical Support for the latest information.
Fibre channel.
Data path
Volumes
•
P-VOL and S-VOL must be equal in size.
•
P-VOL and S-VOL must be of same emulation type.
•
One Continuous Access Journal Z P-VOL may be copied to one S-VOL only.
•
When Continuous Access Synchronous Z is cascaded with Continuous Access
Journal Z, a data volume may be copied to multiple data centers.
Limited per P9500 system. See
“Maximum number of pairs allowed ” (page 29)
.
Maximum number of pairs
Continuous Access Journal Z operations between P9500 and previous models are
supported.
Supported previous models
See
“Planning for previous models ” (page 35)
.
RAID1, RAID5, RAID6 can co-exist in the data volumes and journal volumes.
Supported RAID groups
Virtual LVI volume is supported.
Supported volumes
•
Can be used for data and journal volumes.
•
S-VOL capacity must equal P-VOL capacity.
Cache Residency volume is supported as follows:
•
Data volume: yes
•
Journal volume: no
Must be operable for primary and secondary systems to insure pair creation success.
The remote system cache should be configured to adequately support Continuous
Cache and Nonvolatile Storage
(NVS)
Access Journal Z remote-copy workloads, as well as local workload activity. In
general, cache capacity should be increased 25 percent for Continuous Access
Journal Z. Also, an additional GB should be added for each journal on the system.
Required for disaster recovery.
Host failover software
Extended consistency groups
(EXCTG)
•
A system can have a maximum of four EXCTGs.
•
An EXCTG can contain a maximum of 16 registered journals.
18
Requirements and specifications