NonStop NS1000 Planning Guide (H06.07+)

Installation Facility Guidelines
HP Integrity NonStop NS1000 Planning Guide—542527-003
2-4
Cooling and Humidity Control
you add an R5500 XR UPS to a modular cabinet in the field, the PDU on the right side
is replaced with HP extension bars. The extension bars are oriented inward facing the
components within the rack.
For power information, refer to Model R5500 XR Integrated UPS on page 3-7. For
complete information and specifications on the R5500 XR UPS, contact your HP
representation or refer to the HP UPS R5500 XR Models User Guide available at:
http://h10032.www1.hp.com/ctg/Manual/c00065453.pdf
If you install a UPS other than the HP model R5500 XR UPS in each modular cabinet
of an Integrity NonStop NS1000 system, these requirements must be met to insure the
system can survive a total AC power fail:
•
The UPS output voltage can support the HP PDU input voltage requirements.
•
The UPS phase output matches the PDU phase input. 1-phase and 3-phase output
UPSs are supported. 1-phase and 3-phase input HP PDUs are supported.
•
The UPS output can support the targeted system in the event of an AC power fail.
Calculate each cabinet load to insure the UPS can support a proper ride through
time in the event of a total AC power fail.
If your applications require a UPS that supports the entire system or even a UPS or
motor generator for all computer and support equipment in the site, you must plan the
site’s electrical infrastructure accordingly.
Cooling and Humidity Control
Do not rely on an intuitive approach to cooling design or to simply achieve an energy
balance—that is, summing up to the total power dissipation from all the hardware and
sizing a comparable air conditioning capacity. Today’s high-performance servers use
semiconductors that integrate multiple functions on a single chip with very high power
densities. These chips plus high-power-density mass storage and power supplies are
mounted in ultra-thin server and storage enclosures, which are then deployed into
computer racks in large numbers. This higher concentration of devices results in
localized heat, which increases the potential for hot spots that can damage the
equipment.
Additionally, variables in the installation site layout can adversely affect air flows and
create hot spots by allowing hot and cool air streams to mix. Studies have shown that
above 70°F (20°C), every increase of 18°F (10°C) reduces long-term electronics
reliability by 50%.
Note. A UPS other than the HP model R5500 XR UPS will not be able to utilize the OSM
Power Fail Support function.
Note. A UPS other than the HP model R5500 XR UPS will not be able to utilize the OSM
Power Fail Support function.