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U41271-J-Z156-2-76
Features
Introduction
1.1
Features
System Board
The features of the system board can be found in the technical manual of the
system board for the hardware and in the BIOS Setup for the firmware (see
“Related publications” on page 85).
The HDD Subsystem
SCSI hard disk drives are exclusively installed in the H250 servers. The HDD
subsystem can accommodate up to 12 hard disk drive modules and up to two
SCSI backplanes.
Each hard disk drive module can accommodate a SCSI hard disk drive with an
SCA (Single Connector Attachment) interface and a maximum height of 1 inch.
The module is connected to the SCSI backplane without cables via the SCA
interface. This allows hard disk drives to be simply plugged in or pulled out.
The HDD subsystem is designed for Ultra-3-SCSI. The hard disk drives can be
controlled by the onboard controller (default) or by a RAID controller. If the
server is equipped with a RAID controller, defective hard disk drives can also be
replaced during operation (hot swap). For details, please see section
“Replacement of the HDD Module During Operation” on page 75.
Accessible Drives
The H250 is equipped with a floppy disk drive and a CD-ROM/DVD drive. Two
additionally drives (e. g. tape drives for saving data) can be installed (optional).
For details, please see section “Accessible Drives” on page 78.
Power Supply
Only in its basic configuration level the server has a fixed power supply unit.
Corresponding to the system configuration a second or a third hot plug power
supply unit can be added to achieve redundant power supply. In a redundant
configuration, if one power supply unit fails, the other power supply units
ensures unimpaired continued operation. The defective power supply unit can
be replaced during operation (hot-plug power supply units).