Expansion shelf cables
Expansion shelves are connected to each other and to the Data Domain controller with
qualified cables. The expansion shelf can be connected to supported Data Domain
systems only by using SAS (serial-attached SCSI) cables. Only a fully populated Data
Domain shelf with qualified disks can be added as an expansion shelf.
Shelves for other Dell EMC product lines look identical. Check the product numbers
when unpacking.
ES30 cables
There are two different types of ES30 cables. One type of cable has the same type of
connector at both ends and is used to connect ES30s to each other or to connect
ES30s to controllers with SAS HBAs. DD990 and DD670 are examples of those
controllers. The other type of cable has a different connector on one end and is used
to connect ES30s to controllers that have SAS I/O Modules. DD2500, DD4200,
DD6300, DD6800, DD7200, DD9300, DD9500, and DD9800 systems are examples of
controllers with the SAS I/O Modules.
The connector on the ES30 is called—mini-SAS. The I/O Module connector is called
—HD-mini-SAS. The cables with HD-mini-SAS at one end are available in 2M, 3M, and
5M lengths.
The available ES30 cables with mini-SAS connectors at both ends are 1M, 2M, 3M and
5M in length.
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The mini-SAS connectors are keyed and labeled with an identifying symbol. Host
port is identifier with symbol and Expander (Expansion) port with symbol.
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The end that is marked with the circle symbol connects to the ES30 controller
port marked with a circle.
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The connector end that is marked with a diamond attaches either to a host SAS
HBA port, or to an ES30 controller port marked with a diamond symbol.
Use the appropriate length for the connection you are making. Refer to the specific
Installation and Configuration Guide for recommended cable lengths. For example, you
might:
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Use the 2-meter host-to-shelf cables to connect a Data Domain controller to the
top or bottom shelf in a shelf set when the host and shelves are in the same rack.
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Use a 3-meter or 5-meter cable to connect a controller-to-shelves when the
shelves are not located in the same rack as the host.
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Use the 1-meter shelf-to-shelf cables to connect shelves to other shelves within a
shelf set in the same rack. Use a 2-meter, 3-meter, or 5-meter cable to connect
shelves to other shelves when the set spans racks.
Installing the Shelves
18 Data Domain ES30 Expansion Shelf and FS15 SSD Shelf Hardware Guide
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