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Chapter 2. Architecture and technical overview 41
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
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
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
LED Light Description
Link Off
Green
No link; could indicate a bad cable, not selected, or configuration
error.
Connection established.
Activity On
Off
Data activity.
Idle.
Feature code Description
1993 4.7 GB IDE Slimline DVD-RAM drive
1994 IDE Slimline DVD-ROM drive
1892 VXA-320 160/320 GB Internal Tape Drive
1991 36/72 GB 4 mm Internal Tape Drive
1992 IBM 80/160 GB Internal Tape Drive with VXA Technology
1997 200/400 GB Half High Ultrium 2 Tape Drive