User guide

Hardware architecture 2–11
Hitachi Unified Storage VM Block Module Hardware User Guide
• Command tag queuing
• Industry-standard failover and logical volume management software
• SNMP remote storage system management
The global cache feature in HUS VM enables any fibre-channel port to have
access to any logical unit in the storage system. In the HUS VM, each logical
unit can be assigned to multiple fibre-channel ports to provide I/O path
failover and/or load balancing (with the appropriate middleware support,
such as HGLAM) without sacrificing cache coherency.
The user should plan for path failover (alternate pathing) to ensure the
highest data availability. The logical units can be mapped for access from
multiple ports and/or multiple target IDs. The number of connected hosts is
limited only by the number of FC ports installed and the requirement for
alternate pathing within each host. If possible, the primary path and
alternate paths should be attached to different channel cards.
Systems host platform support
Hitachi Unified Storage VM supports most major open-system operating
systems, such as Microsoft Windows, Oracle Solaris, IBM AIX, Linux, HP-UX,
and VMware. For more complete information on the supported operating
systems, go to: http://www.hds.com/products/interoperability/index.htm.
Each supported platform has a user guide that is included in the HUS VM
documentation set. See the Hitachi Unified Storage VM Product Overview
Guide for a complete list of HUS VM user guides, including the host
configuration guides.
System configuration
After physical installation of the HUS VM has been completed, users can
configure the storage system for open-systems operations with assistance
as needed from the Hitachi Data Systems representative.
Please refer to the following documents for information and instructions on
configuring your HUS VM storage system for open-systems operations:
• The host configuration guides provide information and instructions on
configuring the HUS VM storage system and disk devices for attachment
to the open-systems hosts.
•The Hitachi Storage Navigator User Guide provides instructions for
installing, configuring, and using Storage Navigator to perform resource
and data management operations on the HUS VM .
•The Hitachi Unified Storage VM Block Module Provisioning Guide
describes and provides instructions for configuring the HUS VM for host
operations, including FC port configuration, LUN mapping, host groups,
host modes and host mode options, and LUN Security.
Note: Queue depth and other parameters may need to be adjusted
for the storage system. See the appropriate configuration guide for
queue depth and other requirements.