EMC Symmetrix DMX-3, Руководство по эксплуатации продукта

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Symmetrix DMX-3 architecture 57
Symmetrix DMX-3 Hardware
The Symmetrix DMX systems require certain board types to occupy
particular slot locations within the card cage. Adhering to the
configurations stated for each model type ensures that the physical
routing of the serial signals minimizes contention for memory
resources, maximizes bandwidth within the system, and maintains
total redundancy to the same memory location through two
completely different hardware paths. Termination of TTL and GTLP
signals occurs at the adapters in the end slot locations.
DMX-3 slot
configuration The Symmetrix DMX-3 midplane provides eight slots in the center of
the midplane reserved for global memory directors and the
remaining 16 slots are reserved for channel directors and disk
directors (eight to the left and eight to the right of memory).
Figure 10
on page 57 shows the card cage layout for the global memory
directors, the Front-End (FE) and Back-End (BE) designations for the
Fibre Channel directors, and the FE designations for the ESCON
directors, FICON directors, iSCSI, or GigE Remote directors.
Figure 10 Symmetrix DMX-3 card cage configurations (front)
Dir
T ype
BE
Dir
T ype
FE
Dir
T ype
BE
Dir
T ype
FE
Dir
ype
FE
Dir
T ype
BE
Dir
T T ype
FE
or
Dir
Type Type Type
BE
Dir
T T ype
BE
Dir
FE
Dir
ype
BE
Dir Dir
Dir
BE
M0 M1 M7 M6 M5 M4 M 3 M2
FE *
or
FE *
or or
FE * FE *
BE FE
1 8 7 6 5 4 3 2
9
16 1 3
12 11 10
Dir
Type
14
Dir
Type
15
S YM-0000 8 5
FE
Type
FE
Type
Glo ba l memory director s
M0 thro u gh M7
Director p a ir s
Glo ba l memory Director p a ir s
* Note: The s e s lot s (Director s 5, 6, 11, a nd 12) in the midpl a ne c a n b e config u red with either front-end or ba ck-end director s .