IBM i Series

Towers and Racks 251
Towers and Racks
#5079 1.8m PCI I/O Expansion Tower
The #5079 1.8m PCI I/O Expansion Tower is attached to Models 820, 830, and 840 for adding
up to 90 disk units, up to 22 PCI IOAs, and up to four removable media units. The #5079
includes two #9691 Bus Adapters, two #9739 Optical Bus Adapters, or one each of #9691
and #9739, to provide the HSL interface to the system. The marketing configurator adds two
#9691s to the order. The #5079 1.8m PCI I/O Expansion Tower reports to the system as two
CCIN 5074s.
The #5079 is essentially two #5074 PCI Expansion Towers, with side covers and casters
removed, placed in a 1.8m tower. Each #5079 tower counts as two #5074s toward the system
model maximum number of towers.
The upper and lower enclosures (#5074s) in the #5079 are not
connected with an HSL cable. If both enclosures of the #5079 are to be
placed in the same HSL loop, a #1460 3m Copper HSL cable must be
ordered to connect the upper and lower enclosures. Or, if both
enclosures of the #5079 are to be placed in the same optical HSL loop, a
#1470 6m Optical HSL cable must be ordered to connect the upper and
lower enclosures.
The #5074 is the default when a PCI IOP or IOA is ordered that requires
a PCI expansion unit. The #5079 may be specified on the extra
controllers screen. For each #5079 ordered, a quantity of two #0574
(#5074 Equivalent) specify codes is added to the order. If a #5079 is to
be shared between two systems, one #0574 must be removed from the
original ordering system and added to the sharing system, using a
Record Purpose Only (RPO) change.
Select any two to four of the supported HSL cables for each additional tower. A list of the
supported HSL cables is shown in a table on page 271.
Select two of these SPCN cables per tower:
• #1463 - 2m SPCN cable
• #1464 - 6m SPCN cable
• #1465 - 15m SPCN cable
• #1466 - 30m SPCN cable
• #0369 - 100m Optical SPCN cable
• #1468 - 250m Optical SPCN cable
A #5079 has two #9943 Base PCI IOPs, PCI slots for up to 22 PCI IOAs, and space for up to
90 disk units. The #5079 is capable of controlling Ultra2 SCSI disk units. On new orders,
select two line cords with each #5079 1.8m PCI I/O Expansion Tower.
#5079 1.8m PCI I/O
Expansion Tower