P
[email protected]
- Jan 1, 1970
- 0
http://www.infoworld.com/article/09/01/14/02TC-dc-power_1.html
While I am not fundamnetally opposed to using DC, the power system I would
rather have in a data center building would be:
480Y/277 AC from utility to transfer switch(es)
480Y/277 AC from generator(s) to transfer switch(es)
480Y/277 AC to DC conversion unit in each rack cabinet
Short term (2 minute) battery backup in each rack cabinet
12VDC from power conversion unit to each blade or board
DC conversion to component power performed on board
The above would utilize the custom 12VDC-only computer board, such as those
suggest by Google. This eliminates a separate PSU for each computer or
blade group.
If commodity computers are to be used, then I would do:
416Y/240 AC from utility to transfer switch(es)
416Y/240 AC from generator(s) to transfer switch(es)
240 AC to each rack
IEC or Schuko power strips in each rack
240 AC to each computer PSU
While I am not fundamnetally opposed to using DC, the power system I would
rather have in a data center building would be:
480Y/277 AC from utility to transfer switch(es)
480Y/277 AC from generator(s) to transfer switch(es)
480Y/277 AC to DC conversion unit in each rack cabinet
Short term (2 minute) battery backup in each rack cabinet
12VDC from power conversion unit to each blade or board
DC conversion to component power performed on board
The above would utilize the custom 12VDC-only computer board, such as those
suggest by Google. This eliminates a separate PSU for each computer or
blade group.
If commodity computers are to be used, then I would do:
416Y/240 AC from utility to transfer switch(es)
416Y/240 AC from generator(s) to transfer switch(es)
240 AC to each rack
IEC or Schuko power strips in each rack
240 AC to each computer PSU