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EMC Symmetrix DMX-3 Product Guide
Symmetrix DMX-3 Hardware
Figure 15 Communication to directors
Environmental
control functions
The XCM monitors and logs environmental events across all critical
components (Figure 16 on page 91) and reports any operational
problems. Critical components include channel and disk directors,
global memory directors, power supplies, power line input modules,
fans, and various on/off switches. The XCM environmental control is
capable of monitoring each component’s local voltages ensuring
optimum power delivery. Temperature of directors and memory are
also continuously monitored. The AC power main is checked for:
◆ AC failures
◆ Transfer to auxiliary
◆ DC failures
◆ Current sharing between DC supplies
◆ DC output voltage
◆ Specific notification of overvoltage condition
◆ Current from each DC supply
Serial
Managed
Ethernet
Switch
PowerP
C
860DP
L a p t o p
T r a n s c e i v e r
I n t e r f a c e
CC
M
Managed
Ethernet
fabric
Director 1
Managed
Ethernet
fabric
Node
Director 16
R
e
d
u
n
d
a
n
t
L
i
n
k
R
e
d
u
n
d
a
n
t
L
i
n
k
Managed
Ethernet
fabric
KVM
T r a n s c e i v e r
I n t e r f a c e
XCM0
XCM1
100 Base-T
Node
Node
Node
Node
Node
Node
Node
Customer
phone line
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