User's Manual

M6412 disk enclosures
The M6412 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 disk enclosure I/O modules
• Copper Fibre Channel cables
• Fibre Channel disk drives and drive blanks
• Power supplies
• Fan modules
NOTE: An EVA4400 requires a minimum of one disk shelf with eight disk drives.
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 2 (page
10)). Enclosure status indicators are located at the right of each disk. Figure 3 (page 10) shows
the front and Figure 4 (page 11) shows the rear view of the disk enclosure.
Figure 2 Disk drive bay numbering
Figure 3 Disk enclosure (front view without bezel ears)
4. UID push button1. Rack-mounting thumbscrew
5. Enclosure status LEDs2. Disk drive release
3. Drive LEDs
10 EVA4400 hardware