ProLiant ML530 Servers Maintenance and Service Guide

Removal and Replacement Procedures 2-41
Hot-Plug Power Supplies
Compaq ProLiant ML530 servers use a hot-plug 450-watt power supply. Only one power
supply is required on a system having a single six-bay SCSI hard drive cage. The power supply
must be located in the primary bay. A second power supply is considered redundant for a single
hard drive cage configuration, but necessary for a two hard drive cage configuration. When two
hard drive cages are used, a third power supply is supported as an option for redundancy. The
location of the power supplies is shown in Figure 2-34 and described in Table 2-8.
3 2 1
Figure 2-34. Power supply bay configuration
Table 2-8
Power Supply Bay Configuration
Bay Description
Primary hot-plug power supply
Optional hot-plug power supply
n Redundant with one six-bay SCSI hard drive cage
n Necessary with two six-bay SCSI hard drive cages
Optional hot-plug power supply (redundant for all configurations)