Dell EMC Data Domain DS60 - DD4200, DD4500, and DD7200 Cabling

Refer to the table and associated information in Shelf cabling rules and guidelines on
page 21 for shelf configuration restrictions. See the cabling instructions in this section
that apply to your Data Domain system.
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DD4200, DD4500, and DD7200 systems - up to two DS60 expansion shelves per
set (chain)
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DD6300 systems - only support one DS60
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DD6800 and DD9300 systems - can support up to four shelves per set (chain)
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DD9500 and DD9800 systems - up to four DS60 expansion shelves per set (chain)
Besides the set limitations documented above for a Data Domain system, the following
guidelines provide further recommendation for combing shelves:
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Data Domain recommends a shelf set consist of either all DS60 or all ES30
shelves. A set with a mixture of DS60 and ES30 shelves is more complex to cable,
and requires special cables. If you mix shelves in a set, the maximum number of
mixed shelves in a set is five and there should be a maximum of three DS60
shelves in the set.
Note
For redundancy, a shelf set is connected to two separate SAS I/O modules on the
Data Domain controller, and all of the shelves within a set are connected to each other
via dual paths.
DD4200, DD4500, and DD7200 cabling
There are a few rules that must be followed when adding a mixture of DS60 and other
shelf types to your system.
CAUTION
If a system does not follow all these rules, it is not a legitimate configuration.
Prerequisites:
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You cannot exceed the maximum amount of usable capacity displayed in cabling
table for each system.
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You cannot exceed the maximum number of shelves displayed in cabling table for
each system.
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You cannot connect more than two DS60 shelves in a single set.
Table 12
Minimum and maximum configurations
System Appliance maximum Minimum appliance shelf
count
DD4200 192 TB 1
DD4500 288 TB 1
DD7200 384 TB 1
Mixing DS60, ES30, and ES20 shelves:
The non-Extended Retention versions of these systems all support four chains.
Extra planning and reconfiguration may be required to add DS60 shelves to system
with ES20 shelves, ES30 SATA shelves, or a combination of shelves.
Installing the Shelves
DD4200, DD4500, and DD7200 cabling 27