Plugging In The Ac Line Cord - Dell DAE2-ATA Hardware Reference Manual

Installing a DAE2
Figure 2-2
2-6 2-Gigabit Disk-Array Enclosure (DAE2) Hardware Reference
ac
Connector

Plugging in the ac Line Cord

Highly available, write-caching configurations require that you
connect the first disk enclosure (EA 0, loop 0) to a Standby Power
Supply (SPS) for enclosure power. If you do connect a DAE2 to an
SPS (if, for example, the DAE2 is the first disk enclosure in a
CX700-Series or CX600-Series configuration), be sure that you
maintain power/loop integrity; always connect power/cooling
module A to SPS A, and module B to SPS B.
Figure 2-3 shows the power cord connections for a typical
CX700-Series or CX600-Series configuration.
Do not configure an ATA model DAE2 as EA 0, loop 0. ATA enclosures do not
support the boot and SPS requirements of the first disk array in a storage
system.
An integrated disk-and-processor enclosure, such as a CX500, CX400, CX300,
or CX200-Series DPE2, is always the first disk enclosure on the first loop (0,0).
You should not connect the first DAE2 in a DPE2 configuration to an SPS.
Retention
Bail
EMC2778