HP 3000 Enterprise Virtual Array - Manual (Page 23)

• Fibre Channel drive enclosure—Holds disk drives, power supplies, blowers , Input/Output (I/O)
modules, transceivers, and an Environmental Monitoring Unit (EMU).
• Fibre Channel loop switch—Provides twelve-port central interconnect for Fibre Channel Arbitrated
Loops ( FC-AL ) following the ANSI FC-AL standard.
• HSV Controller—Manages communications between host systems and other devices. A pair of
controllers is included in the Enterprise Virtual Array.
• Rack—A variety of floor-standing racks are available.
NOTE:
Your Enterprise Virtual Array may consist of one or more of the above hardware elements, depending
on your configuration.
Physical layout of the storage system
The Enterprise Virtual Array consists of a pair of controllers and an array of disk drives. The basic
physical components are shown in Figure 4 . The disk drives are installed in drive enclosures, which
connect to Fibre Channel (FC) loop switches. The controller pair also connects to the FC loop switches.
A backplane in the drive enclosures distributes commands and data to the drives. The EVA3000 does
not use FC switches on the back end.
1
3
3
2
CXO7941A
Figure 4 Storage system hardware components
1. Controller pair
2. FC loop switch (not used in the EVA3000)
3. Drive enclosures
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