Power Cabling; Power Cord Locations - IBM TotalStorage DS4300 Installation, User's, And Maintenance Manual

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Power cabling

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Controller A
Ethernet port
Figure 70. Ethernet and serial port locations
Important: The serial interface ports are intended to be used by service technicians
to perform diagnostic operations on the storage subsystem. Inappropriate use will
result in loss of system availability, loss of data, or both.
The DS4300 dual-controller storage subsystem (Model 60U/60X) uses two standard
power cords, and the single-controller storage subsystem (Model 6LU/6LX) uses
only one.
You can connect the power cords to a primary power unit inside the rack, such as a
properly grounded ac distribution unit, or to an external source, such as a properly
grounded electrical outlet.
If you have not already done so, attach the power cords, using the following
illustration for the location of the component parts.
Lever
AC power Strain-relief - AC power
connector clamp
switch
Figure 71. Power cord locations
Complete the following steps to attach the power cords:
1. Wrap the strain-relief clamp around the power cord approximately 20 cm (8 in.)
from the power supply connection end.
2. Attach the power-supply nut, and tighten it securely.
3. Connect the power cord to the power supply.
4. Plug the power cord into a properly grounded electrical outlet.
Note: To maintain power redundancy on the DS4300 dual-controller storage
subsystem (Model 60U/60X), plug the storage subsystem's right and the
left power supplies into two independent external power circuits through
Controller A Controller B
Serial port Ethernet port
Chapter 3. Cabling the storage subsystem
Controller B
Serial port
85