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Chapter 1
Introduction
Detailed hp rp7405/rp7410 Description
14
Mass Storage (Disk) Backplane
Internal mass storage connections (to disks) are routed on the mass storage backplane, having connectors and
termination logic. All disks are hot pluggable. The hp rp7405/rp7410 accommodates one internal removable
media device. Therefore, only one power connector for a removable media device is required on the mass
storage backplane. The mass storage backplane incorporates a circuit that allows power to the internal
removable media device to be programmatically cycled.
Package Description
Dimensions
The dimensions of the hp rp7405/rp7410 are as follows:
• Width: 44.45 cm (17.5 inches), constrained by EIA standard 19 inch racks.
• Depth: Defined by cable management constraints to fit into standard 36 inch deep racks (Rittal/Compaq,
Rosebowl I):
25.5 inches from front rack column to PCI connector surface:
26.7 inches from front rack column to MP Core I/O connector surface
30 inches overall package dimension, including 2.7 inches protruding in front of the front rack columns.
• Height: 10U – 5.4 cm = 43.91 cm (17.287 inches). This is the appropriate height for a product that
consumes 10U of rack height while allowing adequate clearance between products directly above and
below this product. Fitting four server units per 2 m rack and upgrade of current 10U height products in
the future are the main height constraints.
System Chassis
The mass storage section located in the front allows access to removable mass storage devices without
removal of the bezel (not shown.) This is especially helpful when the system is mounted in the lowest position
in a rack. The mass storage bay accommodates one 5.25-inch removable media device and up to four 3.5-inch
hard drives. The front panel display board, containing LEDs and the system power switch, is located directly
above the 5.25-inch removable media bay.
Below the mass storage section and behind a removable bezel are two PCI DC-to-DC power converters.
The bulk power supply section is partitioned by a sealed metallic enclosure located in the bottom of the
package. This enclosure houses the 2N fully redundant BPSs.