Power-saving effects

29 Aug

Read­ing time: 3 — 5 minutes

In the last two months, I have made two trips to Asia, vis­it­ing nearly all the major coun­tries in the region.  I was impressed by the growth and the oppor­tu­ni­ties I saw when I vis­ited many of our cus­tomers. A recur­ring theme in all these coun­tries was a grow­ing need to reduce power con­sump­tion in the data center.

2010 Inter­na­tional Energy Out­look report shows that energy con­sump­tion in the region Asia grows with 118% from 2007 to 2035, with energy con­sump­tion in China is expected to sur­pass the United States by 2015. It is not sur­pris­ing, since the pop­u­la­tion in China is four times the pop­u­la­tion in the United States and has recently over­taken Japan as the sec­ond largest econ­omy in the world. Data Cen­ter power require­ments to com­pete with the increas­ing demand from con­sumers for refrig­er­a­tors, air con­di­tion­ing, and other appli­ances to go with an econ­omy so that any reduc­tion in the power require­ments is wel­come news. China seems for­tu­nately has plenty of coal to gen­er­ate electricity.


In Viet Nam, a lot of energy is hydro­elec­tric power sta­tions, but in short sup­ply. Recur­ring brown outs makes it dif­fi­cult to attract for­eign invest­ment. Last year they signed an agree­ment with Japan to build nuclear reac­tors, but the reac­tors will not be on the line until the year 2020. Until then shall they seek ways to make the most effi­cient use of the power they have.

Cus­tomers in Thai­land and Malaysia were a lit­tle bet­ter, but again power saver was at the top of mind. Cus­tomer in Thai­land said that for each watt of power that went to his Data cen­ter took one and a half watt cool due to the hot and humid weather.

When there is time, I would ask vis­its the customer’s data cen­ter. Days when you had to wear a coat to enter data cen­ter floor is over. Air con­di­tion­ing is turned on, and they all seem to run much hot­ter.  A data cen­tre in New Zealand had a sep­a­rate room, which was reached with the water is cooled in par­tic­u­lar racks to Par­lia­ment over thou­sands of servers. Many data cen­ters had built cab­i­nets around their servers and stor­age to dis­trib­ute the air­flow and sep­a­rate hot air exhaust sys­tem from cooler mois­ture con­tent. I saw enclo­sures made of glass, plexi-glass and thick plas­tic strips like the ones you want to see in a meat locker to keep the cold air in most have arranged their rack sys­tems in hot and cold rows rows.

Con­sol­i­da­tion of sys­tems to reduce power con­sump­tion by using server and stor­age vir­tu­al­iza­tion is also high on the list. Most of our USP V cus­tomers use, or is in the process of imple­ment­ing dynamic pro­vi­sion­ing. Dynamic pro­vi­sion­ing which pro­vides thin pro­vi­sion­ing and zero side regain is now a part of the basic oper­at­ing sys­tem license on Vir­tual Stor­age Plat­form (VSP). Hitachi dynamic tran­si­tion seam­less tier­ing (HDT), our new dynamic page level tran­si­tion seam­less tier­ing soft­ware is charge­able, we see it is ordered on more than 40% of our new VSP because it elim­i­nates the need to reserve space for a vol­ume on sev­eral lev­els in order to make the tran­si­tion seam­less tiering.

The great­est attrac­tion of VSP is the use of Small Form Fac­tor, 2.5-inch drive, which uses half the power of 3.5 drive options, and the tight pack­ag­ing which can fit 128 x 2,5-drives in a 19 inch 13 u high mod­ule. In addi­tion to run­ning on sin­gle phase power user this mod­ule tan­dem fans, push and pull air through the mod­ule with a lower rate of spin.  One of the first things that cus­tomers notice of VSP is how quiet fans. The next thing they Notice is the reduc­tion in their power bill.


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