HP StorageWorks P9000 User Manual page 18

Table 1 General system requirements (continued)
Item
Supported mainframe host
platforms
Data path
Volumes
Maximum number of pairs
Supported previous models
Supported RAID groups
Supported volumes
Cache and Nonvolatile Storage
(NVS)
Host failover software
18 Requirements and specifications
Requirement
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.
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
Continuous Access Journal Z operations between P9500 and previous models are
supported.
See "Planning for previous models " (page
RAID1, RAID5, RAID6 can co-exist in the data volumes and journal volumes.
Virtual LVI volume is supported.
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
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.
"Maximum number of pairs allowed " (page
36).
30).