What was installed:
Cluster support group added the following:
- 1 new storage node added
Business Systems group added the following:
- No new systems
What was removed:
Cluster support group removed the following:
- No Systems
Business Systems group removed the following:
- No systems
November average Power Usage Effectiveness (PUE): unknown
- Average Power Consumption:
- 350kW IT
- 1kw Lighting
- 24.1kw Building and IT Losses
- xxxkw Cooling Power
- Average Cooling Load: 99 tons
No pie chart this month due to software error
Data Center Efficiency Progress:
The DOE national average PUE for data centers is 1.75. 50B-1275 data center has evolved from an average PUE of 1.65 (calculated in 2009) to today’s 1.47. Getting there, staying there, and further improving the PUE is an ongoing effort.
Key highlights for this month include:
- Average room temperature was raised this month. With many cabinets on the business systems side of the room now empty due to virtualization, cold air was coming up through openings now void of cables. The additional cold air was keeping the average room temperature in the 68 degree range. By plugging the opening, the room temperature in isle ways and unused areas rose to 72 to 74 degrees. Cold air at top of racks in active areas remained within server inlet temperature ranges.
- CPU energy use has continued to decrease during the month due to drop in CPU utilization, dropping the total IT energy use to about 2007 levels.
- The new VFD software to automatically control the Air Handler air flow was installed mid month. To enable testing we turned on all the air handlers. For these reasons the PUE has gone up considerably, which is expected during testing. By month end we were seeing large swings in CRAC energy use, indicating a possible problem with the software.
- One temperature sensor used to calculate chiller energy use failed at the start of the month. The sensor provided erroneous data used for calculating the PUE.
