NonStop NS16000 Planning Guide (H06.08+)

Modular System Hardware
HP Integrity NonStop NS16000 Planning Guide—529567-009
5-14
Logical Synchronization Unit (LSU)
The LSU module consists of two types of FRUs:
•
LSU logic board (accessible from the front of the LSU enclosure)
•
LSU optics adapters (accessible from the rear of the LSU enclosure)
•
AC power assembly (accessible from the rear of the LSU enclosure)
This illustration shows an example LSU configuration as viewed from the rear of the
enclosure and equipped with four LSU optics adapter PICs in positions 20 through 23:
This illustration shows an example LSU configuration as viewed from the front of the
enclosure and equipped with four LSU logic boards in positions 50 through 53:
Caution. To maintain proper cooling air flow, blank panels must be installed in all slots that do
not contain logic adapter PICs or logic boards.
LSU
Enclosure
(back)
VST208.vsd
J set in I/O positions 20 - 23 for
logical processors 0 through 7
K set in I/O positions 24 - 27 for
logical processors 8 through 15
LSU Optics
Adapter PIC
B
A
Y
X
C
B
A
Y
X
C
B
A
Y
X
C
B
A
Y
X
C
20 27262524232221
B
A
Y
X
C
LSU Optics Adapter PIC Positions (Slots) 20 - 27
Green LED
(power)
Amber LED
(reset, fault)
Green LEDs
(link status)
LSU
Enclosure
(front)
VST09.vsd
5057 56 55 54 53 55 51
K set in LSU positions 54-57 for
logical processors 8 through 15
J set in LSU positions 50-53 for
logical processors 0 through 7
LSU Logic Board Positions (Slots) 50 - 57
Green LED
Amber LED