User Guide
2. Components
2.8 CMA
2.8
CMA
Figure 30:
Ultrastar Data102 CMA
The cable management assembly (CMA) protects
and manages the cables connected to the PSU
ports, SAS ports, and Ethernet ports. It prevents
damage to the port connectors and the cables
throughout the full travel of the enclosure as it is
pulled out of the rack for servicing. This motion
ensures that the cables contained by the CMA arm
do not snag or get pulled out of the ports as the
enclosure moves.
The Ultrastar Data102 CMA is a two-arm design that
separates the connections to the two sides of the
enclosure. The lower arm supports the cables that
connect to the dual SAS ports and Ethernet on the
right hand side of the unit as viewed from the rear,
as well as the lower PSU power cord. The upper
arm supports the left hand ports and the upper PSU
power cord. Each arm is attached to the Ultrastar
Data102 by one clip at the elbow and two at the
other end. The cables are secured to the arms by
plastic clips called baskets that can be opened
at the top to adjust, add, or remove cables. The
arms can also be moved into a service position by
unclipping them from the elbow end of the arm and
swinging them away from the enclosure when the
enclosure is fully inserted in a rack. This provides
access to connections and components at the rear
of the system without having to remove the CMA or
disconnect any of the cabling.
2.8.1
CMA Specifications
Specification
Value
Extension Range
0 - 36 in.
Number per Enclosure
1 assembly (2 arms)
CMA Arms (Dual) Part Number
1EX0437
CMA Arm (Single) Part Number
1EX1174
Cable Tray Part Number
1EX1119
Hot Swappable?
No
12 SAS Cables
2 Power Cords
Maximum Number of
Cables (with dual arms)
2 Ethernet Cables
FRU or CRU?
CRU
49