Requirements; Site Requirements; Cabling Requirements - EMC CX200-Series Hardware Reference Manual

Installing a CX200-Series DPE2

Requirements

Site Requirements

Cooling
Cabling

Requirements

2-2 EMC CX200-Series DPE2 Hardware Reference
This section explains site, cabling, address, and disk requirements.
For proper operation, the installation site must conform to certain
environmental specifications. These are detailed below and in
Appendix A.
Power To determine an enclosure's power requirements, use the power
rating on the enclosure label. This rating is the maximum power
required for a fully loaded enclosure. The input current, power (VA),
and dissipation per enclosure are based on the maximum capability
of the power supplies and cooling system to provide internally
regulated power. Typical values will be less than the maximum,
depending on the number and manufacturer of disk drives. These
values represent the sum of values shared by the line cords of two
power supplies in the same enclosure. Power cords and supplies
share the power load evenly. If one of the two power supplies in a
standard CX200 fails, the remaining supply and cord support the full
load. You must use a rackmount cabinet with ac power distribution,
and have main branch ac distribution that can handle these values for
the number of components that you will interconnect.
The temperature at the front bezel inlet must meet the ambient
temperature specification described in Appendix A. The site must
have air conditioning of the correct size and placement to maintain
the specified ambient temperature range. The air conditioning must
be able to handle the BTU requirements of the CX200-Series DPE2
and any additional disk enclosure.
The CX200 DPE2 supports copper cable for back-end (BE) connections
to disks it controls (for example, DAE2 disk enclosures). CX200-Series
systems use optical cables for front-end (FE) connections to the
external Fibre Channel environment.
Any copper cables you use must meet the appropriate standards for
2-Gbit FC-AL. Such cables must be fully shielded, twin-axial,
full-duplex cables with High Speed Serial Data Connector (HSSDC)
connectors. Distances greater than 1 meter require equalized cables;
unequalized 1-meter cables are adequate. The DPE2 does not support
cables shorter than 1 meter or longer than 10 meters.