OCPRF100 MP Server System Technical Product Specification
Revision 1.0
8. Peripheral Bay Backplane Board
This chapter describes the features and functionality of the peripheral bay backplane board, which is also referred to as the backplane. The backplane is designed in compliance with the SCSI Command Set For Enclosure Services Document Specification, and SCSI Accessed Fault- Tolerant Enclosures Interface Specification.
FeaturesThe backplane supports the following features:
•Single channel maximum of two
•Single connector attachment
•Insertion and removal of hard drives during power on (hot swap).
•LED indicators for each drive.
•Field effect transistor (FET) power control for each hard drive.
•FET short protection.
•Microcontroller to monitor enclosure services.
•I2C bus for management information.
•Flash memory for upgrading firmware.
•Temperature sensing.
•Programmable logic device (PLD) reprogrammability.
•SCSI accessed
•Tolerant of baseboard management controller (BMC) failure.
•Supports
•LVD/SE multimode support.
•IDE/FD connections on board.
8.1Peripheral Bay Backplane Overview
The backplane will be an LVDS SCSI design. The single backplane has one channel with SAF- TE and microcontroller with a capacity of two drives maximum, either 1.0 or 1.6 inches tall and 3.5 inches wide.
The backplane incorporates indicator LEDs. These LEDs will indicate drive power (green), drive activity (green), and drive fault (yellow). A light pipe will transmit the LED indicators from the backplane to the front bezel.
90