Unified Computing from a Facilities Perspective
With this latest installment, Doug Alger discusses how the Cisco Unified Computing System will impact strategies for cabling, power and cooling. The conversation then moves onto a broader discussion of addressing power and cooling requirements in a age of dynamic infrastructure.
Posted by Omar Sultan at 01:49PM PST


rjhintz Mar 31, 2009
Some interesting takeaways, if I heard correctly:
—after implementation, expect emptied space, but don’t expect to fill the empty space with more heat/power consuming devices.
This is fine for a non-space constrained, single enterprise facility, but may be less desirable for a facility that charges tenants by the square foot or by the rack. The tenant is going to want to minimize space and jam more devices in the rented space, up to the power/cooling density capabilities of the site
—UCS decreases cable density that enhances ability to manage overhead infratructure
—In the Cisco case, at this point, UCS is going to be considered for new design rather than retrofit. It would be interesting to know what the economic argument would be for retrofitting Richardson. Wait until currently installed equipment is due to be replaced? Would Richardson power/cooling handle UCS (presumably by removing some equipment from racks where UCS was installed).
—average kw/Rack
—10 year old sites: 2.2 kW/cabinet
—Richardson (how old?): 4.4 kW
—newer: 12 kW