Ethernet Ports; Internal Storage; Internal Media Devices; Internal Hot-Swappable Scsi Disks - IBM REDPAPER 520Q Technical Overview And Introduction

2.6.12 Ethernet ports

The two built-in Ethernet ports provide 10/100/1000 Mbps connectivity over CAT-5 cable for
up to 100 meters. Table 2-9 lists the attributes of the LEDs that are visible on the side of the
jack.
Table 2-9 Ethernet LED descriptions
LED
Link
Activity

2.7 Internal storage

There is one dual channel Ultra320 SCSI controller that is managed by the EADS-X chips,
integrated into the system planar, and that 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 p5-520 and p5-520Q supports two 4-pack disk drives using a 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 p5-520 and p5-520Q provide two slim-line media bays for optional DVD-ROM (FC 1994)
and optional DVD-RAM (FC 1993) and one media bay for a tape drive. Table 2-10 shows all
additional media devices for the systems.
Table 2-10 Available optical and tape drives
Feature code
1993
1994
1892
1991
1992
1997

2.7.2 Internal hot-swappable SCSI disks

The p5-520 and p5-520Q can have up to eight hot-swappable disk drives plugged in the two
4-pack disk drive backplanes. The hot-swappable process is controlled by the SCSI
enclosure service (SES), which is located in the 4-pack disk drives backplane (AIX 5L
Light Description
Off No link; could indicate a bad cable, not selected, or configuration
error.
Green Connection established.
On Data activity.
Off Idle.
Description
4.7 GB IDE Slimline DVD-RAM drive
IDE Slimline DVD-ROM drive
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
200/400 GB Half High Ultrium 2 Tape Drive
Chapter 2. Architecture and technical overview
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