Requirements And Restrictions - Hitachi G1000 User Manual

Requirements and restrictions

The following table lists the requirements and restrictions for global-active
device operations.
Storage systems at the
primary and secondary
sites
External storage system
(for quorum disk)
Licensed capacity
Host server platforms
Physical paths connecting
the primary and
secondary storage
systems
Remote paths and path
groups
2-2
Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide
Item
• Model. Virtual Storage Platform G1000 is required at the
primary and secondary sites.
• Microcode. Microcode (DKCMAIN) version
80-01-4x-00/00 or later is required on the primary and
secondary systems.
• Global-active device. The GAD feature must be
installed and enabled on the primary and secondary
systems.
• Controller emulation type. The controller emulation
type of the primary and secondary systems must be
same.
• Shared memory. Additional shared memory is required
in the primary and secondary storage systems.
• The storage system must be supported for attachment to
the VSP G1000 using Universal Volume Manager.
For details, see the Hitachi Universal Volume Manager
User Guide.
• The maximum distance between the external storage
system and the primary site and secondary site is 1,500
km.
The licensed capacity is restricted as follows:
• The page size assigned to the virtual volume is counted
as a licensed capacity for GAD.
• If the actual licensed capacity exceeds the available
licensed capacity, GAD can be used as usual for 30 days.
After 30 days, only pair split and pair delete operations
are allowed.
Refer to the Hitachi Data Systems interoperability matrix:
http://www.hds.com/products/interoperability
• A maximum of 8 physical paths is supported.
• The 16FC8 package is required for the ports that connect
the primary and secondary storage systems.
• The ports that connect the primary and secondary
storage systems must be configured as Initiator ports
and RCU target ports.
• The maximum distance between the primary and
secondary storage systems is 1,000 km.
• Fibre-channel interface is required.
• A maximum of 8 remote paths can be registered in a
path group.
• A maximum of 64 path groups can be set in a storage
system (sum of the path groups used by TrueCopy,
Universal Replicator, and Universal Replicator for
Mainframe).
System requirements
Requirements and restrictions