VERITAS NetBackup 5330 Appliance Hardware Installation Manual page 52

52 Hardware installation procedures
Connecting one Expansion Shelf to a Primary Shelf
If you are installing a compute node, a Primary Shelf, and an Expansion Shelf at
the same time, keep the power off to all devices until all of the cabling is complete.
Use the provided sequence to turn on the devices.
Caution: Be sure to install the SAS cables correctly before you turn on the
Expansion Shelf. If you need to disconnect and reconnect cables on an operational
Expansion Shelf, there is a risk that the Primary Shelf cannot recognize the new
configuration.
Prerequisites for adding an Expansion Shelf
Be sure that you have 4U of rack space for each new shelf. One shelf must be
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close to the Primary Shelf.
Refer to the following section to verify that cable lengths are adequate for your
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rack installation.
See "Determining SAS cable length" on page 30.
Be sure that you have 220VAC power input for the storage shelf.
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Verify that the compute node and the Primary Shelf are connected correctly.
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Compute node
Primary Storage Shelf
A
B