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Nonenclosure (decorative) materials must have a flammability rating of V-1 or better. If glass is used
(such as in rack doors), it must be safety glass. If wood shelves are used in the rack/cabinet, they must
be treated with a UL Listed flame-retardant coating.
• The rack or cabinet configuration must comply with all IBM requirements for "safe to service" (contact
your IBM Installation Planning Representative for assistance in determining if the environment is safe).
There must be no unique maintenance procedures or tools that are required for service.
Elevated service installations, where the products to be serviced are installed between 1.5 m and 3.7
m (5 ft and 12 ft) above the floor, require the availability of an OSHA- and CSA-approved nonconductive
step ladder or ladders. If a ladder or ladders are required for service, the customer must supply the
OSHA- and CSA-approved nonconductive step ladder (unless other arrangements are made with the
local IBM Service Branch Office). Some products can have rack installation limitations. Refer to the
specific server or product specifications for any restrictions. Products that are installed over 2.9 m (9
ft) above the floor require a Special Bid to be completed before they can be serviced by IBM service
personnel.
For products not intended for rack-mounting to be serviced by IBM, the products and parts that are
replaced as part of that service must not weigh over 11.4 kg (25 lb) Contact your Installation Planning
Representative if in doubt.
There must not be any special education or training that is required for safe servicing of any of the
products that are installed in the racks. Contact your Installation Planning Representative if you are in
doubt.
Reviewing IBM Storage Scale System Utility Node location guidelines
Consult these guidelines when you plan the location of a utility node and any existing IBM Elastic Storage
System in your environment, including any IBM Storage Scale client or protocol node.
Each utility node cluster consists of the following components:
• One utility node system (requires 2U standard rack units in a rack).
• 1 GbE network switch for management network (requires 1U in rack).
• High-speed InfiniBand or Ethernet network for internode communication (requires 1U space in rack).
Physical installation planning
Before you set up your system environment, you must verify that the prerequisite conditions for the
system are met.
This information applies to the supported hardware components. Answer the following questions before
you start the installation process:
• Does your physical site meet the environment requirements for your system?
The system requires the physical site to meet the environment requirements. For detailed guidelines
about site preparation and physical planning, see the Site preparation and physical planning document.
• Do you have adequate rack space for your hardware?
The system requires two Electronic Industries Alliance (EIA) units for each utility node.
• Do the power circuits that you are planning to use have sufficient capacity and the correct sockets for
your installation?
– A clearly visible and accessible emergency power off switch is required.
– For redundancy, two independent power circuits are required. One circuit connects to each power
supply in each enclosure.
• Have you provided appropriate connectivity by preparing your environment?
The appropriate power requirements for each power supply unit are provided. For more information, see
"Reviewing IBM Storage Scale System Utility Node location guidelines" on page 40.
40 IBM Storage Scale System Utility Node: Hardware Planning and Installation Guide
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