User Manual

Storage System Hardware Components
81Enterprise Virtual Array 3000 User Guide
I/O Module Power
The I/O module +5 VDC power sensing device protects the modules against
overcurrent conditions. If the +5 VDC current exceeds 2.5 A rms (nominal), the
sensor opens, removing the +5 VDC input from the I/O module, thereby disabling
the module until:
■ The defective I/O module is replaced.
■ The overcurrent condition no longer exists.
Note: A disabled I/O module cannot transfer data and disconnects all the drives in
the enclosure from the loop.
Copper Fibre Channel Cables
Copper Fibre Channel cables are used to connect the drive enclosures to each
other, and to the controller enclosures. The cables are available in 0.6-meter and
2.0-meter lengths. Copper cables provide performance comparable to fiber optic
cables.
Fibre Channel Disk Drives
HP disk drives are hot-pluggable and include the following features:
■ Dual-ported 2 Gbps FC-AL interface that allows up to 120 drives to be
supported per FC-AL pair. Only 56 drives are supported on the Enterprise
Virtual Array 3000.
■ A variety of capacities and spindle speeds:
— 36 GB, 10K and 15K rpm
— 72 GB, 10K and 15K rpm
— 146 GB, 10K rpm
■ Compact, direct-connect design for maximum storage density and increased
reliability and signal integrity.
■ Improved drive cooling essential for high performance.
■ Better vibration damping for improved performance.
■ Greater component commonality throughout the Enterprise Virtual
Array 3000.