Connecting SAS cables and power cords
Overview
Connecting cables includes the following steps:
1. Reading the “Cabling best practices” Page 34.
2. “Connecting SAS cables to the server or controller enclosure” Page 35.
3. “Connecting SAS cables to cascaded disk enclosures” Page 36.
4. “Connecting power cords” Page 37.
IMPORTANT: The following illustrations demonstrate connecting a disk enclosure to a server
with an installed controller. In your environment, the disk enclosure might connect to a controller
enclosure, which then connects to the host or network. Cabling restrictions may exist for the
different installation environments. For more information, see the user documents for your
controller or controller enclosure.
NOTE: For additional examples of cabling scenarios, see (page 43).
Cabling best practices
• Use supported SAS cables and power cords. A variety of cables and cable lengths are
supported for use with this disk enclosure. For more information, see the QuickSpecs for
the disk enclosure, available on the D3000 website.
• Use the shortest possible cable between devices. Shorter cables reduce the possibility of
signal degradation that might occur over longer distances. In addition, shorter cables are
easier to manage and route along the back of the rack.
• Gather cables in the rear of the disk enclosure to ensure that the cabling in the back of the
rack system does not interfere with system operation or maintenance. Bind cables loosely
with cable ties and route the cables out of the way, along the side of the rack. When the
cables are tied together and routed down the side of the rack, system components and
indicators are easily visible and accessible.
• Bind and support cables in a manner that eliminates stress on connectors and tight bends
of the cables. This prevents damage to the connector and cable, and ensures that the
connector remains fully seated in the port.
• Attach a label near both ends of each cable to identify the device connected to that cable.
Include the device, device name, port, or other useful information.
• Use colored markers to color code both ends of each cable, to help visually identify a
particular cable without having to read or locate the label.
• In multipath configurations, you might want to loosely bind the matching pair of cables
connecting devices.
34 Installation
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