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v Main-power cables with the following feature codes must meet specific design
Emergency power-off considerations
The IBM XIV Storage System does not have an emergency power-off (EPO) switch;
however, you can connect the XIV system to a room EPO switch.
Note: National or local building, electrical, fire prevention, safety, and other laws
or regulations might address or control the manner in which information
technology equipment is installed within certain facilities and environments. The
application of those laws or regulations might depend on considerations of factors
beyond the nature or design of the equipment to be installed. It is a customer
responsibility to interpret and identify any laws or regulations applicable to the
installation of information technology in its environment and to inform IBM, IBM
Business Partners, or their designated installers of any actions not identified in this
planning guide that are necessary to install information technology equipment in
the customer facilities in accordance with such applicable laws or regulations.
A room EPO switch can be powered by the XIV system uninterruptible power
supplies for use with non-powered switch circuit breakers. The EPO circuit in the
uninterruptible power supplies is considered a Class 2 circuit (UL, CSA standards)
and a safety extra-low voltage (SELV) circuit (IEC standard). Contact your IBM
service representative for more information about connecting to a room EPO
switch.
Attention: Powering off the XIV system using a room EPO switch results in data
loss and possible loss of configuration. An IBM service representative is required to
recover an XIV system that was turned off using a room EPO switch. If the XIV
system loses ac power but is not powered off using an EPO circuit, data and
configuration are preserved.
Planning for environmental requirements
Ensure that the installation site meets all operating environment requirements for
the XIV system.
– Three-phase wye installations (220 V - 240 V) with ATS feature code 9892
require wall circuit breakers that have a rating of 30 A to 32 A.
– Three-phase delta installations (200 V - 240 V) with ATS feature code 9894
require wall circuit breakers that have a rating of 30 A.
For the most reliable operation, do not use Ground Fault Circuit Interrupter
(GFCI), Earth Leakage Circuit Breaker (ELCB), and Residual Current
Breaker (RCCB) type circuit breakers with XIV systems. The XIV system is
certified for safe operation and is compliant with IEC, EN, UL, CSA 60950-1
standards. However, if leakage detection circuit breakers are required by local
electrical practice, the breakers must be sized for a leakage-current rating of 300
mA or greater to reduce the risk of server outage caused by erroneous and
spurious tripping. For more information, see "Leakage current" on page xiii.
certifications:
– 9891 uses bulk wire that meets UL and CSA safety agency certifications, but
not the EU harmonization certification.
– 9892 uses bulk wire that meets the EU harmonization certification, but not UL
and CSA safety agency certifications.
– 9894 uses bulk wire that meets UL and CSA safety agency certifications, but
not the EU harmonization certification.
Chapter 6. Installation site requirements
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Circuit
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