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Purchase Year | Node type | Node Count | Cores per node | CPU factor |
|---|---|---|---|---|
2006 | yili | 25 | 4 | 8.46 |
2008 | fell | 277 | 8 | 11. |
2009 | hequ | 192 152 | 8 | 14.6 |
2009 | orange | 96 | 8 | 10. |
2013 | bullet | 185 179 | 16 | 14. |
Retirement Models
Two models have been considered: strict age cut (eg all machines older than 5 years are retired) and a do not resuscitate model ("DNR" - machines out of Maintech support left to die). The age cut presumably allows better planning of the physical layout of the data center, as the DNR model would leave holes by happenstance. On the other hand, the DNR model leaves useful hardware in place with minimal effort, but does assume that floor space and power are not factors in the cost.
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