8
Install - Step 1
Before you begin
Verify storage-system back-end connections
Verify the bus (loop) cabling for the SPE3 and your DAE3Ps.
The CX3-40c SPE3 supports two redundant Fibre Channel back-end (BE) buses. On
each bus, the two independent loops from SP A and SP B are paired, and share access
to the same dual-port disks. BE ports 0 and 1 connect to the link control card (LCC) A
or LCC B primary (PRI) ports on the first DAE3P in their respective loops. The
DAE3P expansion (EXP) ports connect to the next PRI ports in their loops. Each bus
includes up to 8 DAE3Ps (120 disks).
!
!
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!
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EXP PRI
EXP
PRI
#
!
EXP PRI
EXP
PRI
#
A
B
!
!
!
!
!
EXP PRI
EXP
PRI
#
!
EXP PRI
EXP
PRI
#
A
B
!
!
!
!
!
EXP PRI
EXP
PRI
#
!
EXP PRI
EXP
PRI
#
A
B
!
!
!
!
!
EXP PRI
EXP
PRI
#
!
EXP PRI
EXP
PRI
#
A
B
!
!
!
!
!
EXP PRI
EXP
PRI
#
!
EXP PRI
EXP
PRI
#
A
B
!
!
!
!
!
EXP PRI
EXP
PRI
#
!
EXP PRI
EXP
PRI
#
A
B
!
!
!
!
!
EXP PRI
EXP
PRI
#
!
EXP PRI
EXP
PRI
#
A
B
!
!
!
!
!
EXP PRI
EXP
PRI
#
!
EXP PRI
EXP
PRI
#
A
B
S
P A
S
P B
LCC B
LCC A
EMC
3
412
B
us
1
B
us
0
B
us
1
B
us
0
EA0/B
us
0
EA1/B
us
0
EA2/B
us
0
EA
3
/B
us
0
EA0/B
us
1
EA1/B
us
1
EA2/B
us
1
EA
3
/B
us
1
