IBM zEnterprise EC12 Installation Manual page 65

A frame
U
U U
Customer water hose connectors
1 2 3
S R S
U E U
T
P P
P U
P
L R L
Y N Y
B W B
L H L
I
A A
C T C
K E K
The water hoses are installed through the I/O cable tailgate at the rear of the A frame. This significantly
reduces the space available for I/O cable exit from the A frame. One option to alleviate this situation is to
consider routing some of the I/O cables from the rear of the A frame to the front of the frame. Another
possibility is top exit I/O towers. If your facility has or is considering overhead cabling, the use of top
exit I/O helps to solve the crowding of too many cables exiting the bottom of the frames.
The following illustration shows two water facilities: the upper diagram represents a typical chilled water
installation where the supply and return runs are connected to a single chilled water source. To assure
maximum, uninterrupted cooling, you may want to consider a high availability approach to the water
supply. This would mean running a pair of supply and return lines from each of two different chilled
water sources, as shown in the lower diagram. This would insure that, if one source should become
unavailable, the other would continue to cool the server, with no degradation.
Rear view
Z frame
J1
Pb
BATTERY ENBLD BATTERY ENBLD
(CB Must be on) (CB Must be on)
J1
Pb
BATTERY ENBLD
(CB Must be on) (CB Must be on)
IBM AC/DC AC/DC
Converter Converter
IBF PWR IBF PWR /0 /I
J01 J01 unlock/off unlock/off lock/on BPR enbld BPR enbld
IBM AC/DC AC/DC
Converter Converter
IBF PWR IBF PWR /0 /I
J01 J01
unlock/off unlock/off lock/on BPR enbld BPR enbld
IBM AC/DC AC/DC
Converter Converter
IBF PWR IBF PWR /0 /I
J01 J01
unlock/off unlock/off lock/on BPR enbld BPR enbld
IBM AC/DC AC/DC
Converter Converter
IBF PWR IBF PWR
/0 /I
J01 J01 unlock/off unlock/off lock/on BPR enbld BPR enbld
IBM
AC/DC AC/DC
Converter Converter
IBF PWR IBF PWR
/0 /I
J01 J01 unlock/off unlock/off lock/on BPR enbld BPR enbld
IBM AC/DC AC/DC
Converter Converter
IBF PWR IBF PWR /0 /I
J01 J01
unlock/off unlock/off lock/on BPR enbld BPR enbld
U
J01 J02 J02 J03 J04 J04 UEPO PWR SE J05 J05 J06 J06 J07 J07 J08 J09 J10 J11
N N O O Y B Y B P P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
R R P P W W . . . . . . . . . . . . . . . . . . . .
A M A M S A S A R R . . . . . . . . . . . . . . . . . . . . P B B P
L L S S CMPLT STBY STBY GOOD GOOD C C
J09 J10
J01 J02 J03 J04 J05 J06 J06 J07 J08 J08 . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . B B
P P C C
GOOD
J09 J10
J01 J02 J03 J04 J05 J06 J06 J07 J08 J08 . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . P B P B
C C
GOOD
4
R
E
T
U
R
N
W
H
I
T
E
Chapter 3. Models and physical specifications
Level 01f
51