Determining Sas Cable Length - VERITAS NetBackup 5330 Appliance Hardware Installation Manual

Storage shelves and disk drives

Hide thumbs Also See for NetBackup 5330:

Table of Contents

Hardware pre-installation requirements

Determining SAS cable length

Best practices for hardware installation are as follows:

When you install the rails, be sure to use complete RUs. Do not use holes from

■

different RUs.

The storage shelves are much heavier than the compute node and should be

■

installed as close to the bottom of the rack as possible.

The compute node should always be installed above the storage shelves.

■

Do not leave any spaces between the compute node and a storage shelf, or

■

between two storage shelves.

When you add a second Expansion Shelf to an operational appliance system,

■

turn off the compute node, the Primary Shelf, and the existing Expansion Shelf.

To determine rack locations for the hardware

Determine the total number of rack units (RUs) that you need as follows:

Compute node (2RU) and Primary Storage Shelf (4RU)

■

Systems that contain these two units require a total of six RUs.

Compute node (2RU), Primary Storage Shelf (4RU), Expansion Storage

■

Shelf (4RU)

Systems that contain these three units require a total of ten RUs.

Use the Rack Templates that are provided with the hardware to determine RU

locations.

Record the rack positions to help you locate them easily when mounting the

hardware.

See "Installing a Primary Shelf or an Expansion Shelf" on page 34.

Before you add an Expansion Shelf, be sure to verify that the location of the shelf

accommodates the length of the SAS cables. Each SAS cable is 1 meter (3.28 feet)

long. A 2 meter (6.56 feet) SAS cable is available separately. Contact Veritas

Technical Support, if needed.

Table of Contents