User's Manual

The data connections are the interfaces to the disk drive enclosures or loop switches (depending
on your configuration), the other controller, and the fabric. Fiber optic cables link the controllers
to the fabric, and, if an expansion cabinet is part of the configuration, link the expansion cabinet
drive enclosures to the loop es in the main cabinet. Copper cables are used between the controllers
(mirror port) and between the controllers and the drive enclosures or loop switches.
Racks
All storage system components are mounted in a rack. The rack provides the capability for mounting
standard 483 mm (19 in) wide controller and drive enclosures. Each configuration includes two
controller enclosures (the controller pair), drive enclosures, FC loop switches (if required), and an
expansion bulkhead. Each controller pair and all the associated drive enclosures form a single
storage system.
The following racks are available for the EVA8000/8100:
• 36U Rack
• 42U Rack
NOTE:
• Although the 22U, 25U, 33U, and 41U rack configurations are no longer available, existing
storage systems in these racks are still supported.
• Racks and rack-mountable components are typically described using “U” measurements. “U”
measurements are used to designate panel or enclosure heights.
The racks provide the following:
• Unique frame and rail design — Allows fast assembly, easy mounting, and outstanding
structural integrity.
• Thermal integrity — Front-to-back natural convection cooling is greatly enhanced by the
innovative multi-angled design of the front door.
• Security provisions — The front and rear door are lockable, which prevents unauthorized
entry.
• Flexibility — Provides easy access to hardware components for operation monitoring.
• Custom expandability — Several options allow for quick and easy expansion of the racks to
create a custom solution.
Rack configurations
Each system configuration depends on the number of disk enclosures included in the storage system.
For more information about racks and configurations, including expansion and interconnection,
see the HP Enterprise Virtual Array Hardware Configuration Guide.
Power distribution
AC power is distributed to the rack through a dual Power Distribution Unit (PDU) assembly mounted
at the bottom rear of the rack. The characteristics of the fully-redundant rack power configuration
are as follows:
• Each PDU is connected to a separate circuit breaker-protected, 30-A AC site power source
(220–240 VAC ±10%, 50 or 60-Hz, ±5%). Figure 26 (page 53) illustrates the compatible
60-Hz and 50-Hz wall receptacles.
52 Enterprise Virtual Array hardware components