User guide

1 EVA6400/8400 hardware
The EVA6400/8400 contains the following hardware components:
• HSV controllers—Contains power supplies, cache batteries, fans, and an operator control
panel (OCP)
• Fibre Channel disk enclosure—Contains disk drives, power supplies, fans, midplane, and I/O
modules
• Fibre Channel Arbitrated Loop cables—Provides connectivity to the HSV controllers and the
Fibre Channel disk enclosures
• Rack—Several free standing racks are available
M6412A disk enclosures
The M6412A disk enclosure contains the disk drives used for data storage; a storage system
contains multiple disk enclosures. The major components of the enclosure are:
• 12-bay enclosure
• Dual-loop, Fibre Channel drive enclosure I/O modules
• Copper Fibre Channel cables
• Fibre Channel disk drives and drive blanks
• Power supplies
• Fan modules
Enclosure layout
The disk drives mount in bays in the front of the enclosure. The bays are numbered sequentially
from top to bottom and left to right. A drive is referred to by its bay number (see Figure 1 (page
9)). Enclosure status indicators are located at the right of each disk. Figure 2 (page 9) shows
the front and Figure 3 (page 10) shows the rear view of the disk enclosure.
Figure 1 Disk drive bay numbering
Figure 2 Disk enclosure front view without bezel ears
4. UID push button1. Rack-mounting thumbscrew
5. Enclosure status LEDs2. Disk drive release
3. Drive LEDs
M6412A disk enclosures 9