Internal Storage; Internal Media Devices - IBM System p5 550 Technical Overview And Introduction

Table 2-9 Ethernet LED descriptions
LED
Link
Activity

2.7 Internal storage

One dual channel Ultra320 SCSI controller, managed by the EADS-X chips, is integrated into
the system planar and is used to drive the internal disk drives. The eight internal drives plug
into the disk drive backplane, which has two separate SCSI buses with four disk drives per
bus.
The internal disk drive can be used in two different modes based on whether the SCSI RAID
Enablement Card (FC 1976) is installed (see 2.6.3, "Integrated RAID options" on page 36).
The p5-550 or p5-550Q supports a split 8-pack disk drive backplane that is designed for
hot-pluggable disk drives. The disk drive backplane docks directly to the system planar. The
virtual SCSI Enclosure Services (VSES) hot-plug control functions are provided by the
Ultra320 SCSI controllers.

2.7.1 Internal media devices

The p5-550 or p5-550Q provides two slim-line media bays for an optical drives and one media
bay for a tape drive. Table 2-10 summarizes these features.
Table 2-10 Available optical and tape drives
Feature code
1892
1991
1992
1993
1994
1997
Light Description
Off No link; could indicate a bad cable, not selected, or configuration error
Green Connection established
On Data activity
Off Idle
Description
VXA-320 160/320 GB internal tape drive
36/72 GB 4 mm internal tape drive
IBM 80/160 GB internal tape drive with VXA technology
4.7 GB IDE slimline DVD-RAM drive
IDE slimline DVD-ROM drive
200/400 GB half height Ultrium 2 tape drive
Chapter 2. Architecture and technical overview
41