User guide

3 Enterprise Virtual Array hardware components
This chapter describes the Enterprise Virtual Array hardware components.
Fibre Channel drive enclosures
The drive enclosure contains the disk drives used for data storage. A storage system includes
multiple drive enclosures. The major components of the enclosure are:
• 3U enclosure
• Dual redundant, active-to-active 2 Gbps FC loops
• 2.125-Gb, dual loop, 14-drive enclosure
• Dual 2 Gbps FC I/O modules (A and B loops)
• Copper Fibre Channel cables
• Fibre Channel disk drives and drive blanks
• Dual redundant power supplies
• Dual redundant blowers
• Cache batteries
• Environmental Monitoring Unit (EMU)
Enclosure layout
The disk drives mount in bays in the front of the enclosure. The bays are numbered sequentially
from left to right. A drive is referred to by its bay number. Enclosure status indicators are located
in the lower-right, front corner. Figure 6 (page 26) shows the front and rear views of the FC drive
enclosure.
Figure 6 FC drive enclosure—front and rear views
2. Drive bay 141. Drive bay 1
4. I/O module B3. EMU
6. Power supply 15. Blower 1
8. Power supply 27. Blower 2
10. Status indicators (EMU, enclosure power, enclosure
fault)
9. I/O module A
26 Enterprise Virtual Array hardware components