nothing special, dell C2100's.... looks like these settings are getting to be more common in stuff designed for high density data center install.
Regards. Faisal Imtiaz Snappy Internet & Telecom 7266 SW 48 Street Miami, FL 33155 Tel: 305 663 5518 x 232 Help-desk: (305)663-5518 Option 2 or Email: [email protected] > From: "Josh Luthman" <[email protected]> > To: [email protected] > Sent: Sunday, May 15, 2016 12:14:49 AM > Subject: Re: [AFMUG] Data center temperatures > Wow that's cool! What kind of hardware are they? > Josh Luthman > Office: 937-552-2340 > Direct: 937-552-2343 > 1100 Wayne St > Suite 1337 > Troy, OH 45373 > On Sun, May 15, 2016 at 12:13 AM, Faisal Imtiaz < [email protected] > > wrote: >> It would be interesting to note that, we are putting in some new servers, >> and in >> the bios these have a setting that delays a random amount of time between 50 >> - >> 120seconds, before returning to power on state after a power loss ..... >> :) >> Faisal Imtiaz >> Snappy Internet & Telecom >> 7266 SW 48 Street >> Miami, FL 33155 >> Tel: 305 663 5518 x 232 >> Help-desk: (305)663-5518 Option 2 or Email: [email protected] >>> From: "Chuck McCown" < [email protected] > >>> To: [email protected] >>> Sent: Saturday, May 14, 2016 11:40:09 PM >>> Subject: Re: [AFMUG] Data center temperatures >>> I remembering being at a data center on a hot summer day. Power went out, >>> generator started. Things were fine... then all the air conditioners >>> switched >>> on at the same time. Actually stalled the generator. We had to put >>> sequencers >>> on the AC. >>> From: Faisal Imtiaz >>> Sent: Saturday, May 14, 2016 9:20 PM >>> To: [email protected] >>> Subject: Re: [AFMUG] Data center temperatures >>> FYI, Electrical Code (NECA) and most datacenters require the power not to be >>> loaded beyond 80% of breaker capacity... i.e. 16amp draw on a 20amp circuit. >>> Additionally, one also has to have head room on the power circuit to deal >>> with >>> start up draw (current rush). It's not pretty when you have a crap load of >>> servers starting up all together >>> :) >>> Faisal Imtiaz >>> Snappy Internet & Telecom >>> 7266 SW 48 Street >>> Miami, FL 33155 >>> Tel: 305 663 5518 x 232 >>> Help-desk: (305)663-5518 Option 2 or Email: [email protected] >>>> From: "Eric Kuhnke" < [email protected] > >>>> To: [email protected] >>>> Sent: Saturday, May 14, 2016 7:50:22 PM >>>> Subject: Re: [AFMUG] Data center temperatures >>>> How does a 44U cabinet need 208V 60A for storage arrays? >>>> In a 4U chassis the max hard drives (front and rear) is about 60 x 3.5"... >>>> Say each drive is 7.5W TDP, that's 450W of drives. Add another 200W for >>>> controller/motherboard and fans. 650W in 4U. >>>> 44 / 4 = 11 >>>> Multply by 650 >>>> 7150W >>>> More realistically with a normal amount of drives (like 40 per 4U) a >>>> single 208 >>>> 30A is sufficient, >>>> 208 x 30 = 6240W >>>> Run at max 0.85 load on the circuit, so >>>> 6240 x 0.85 = 5304W >>>> In a really dense 2.5" environment all of the above is of course invalid, >>>> you >>>> could probably need up to 7900W per cabinet >>>> Then there's 52U cabinets as well... >>>> On May 13, 2016 6:16 PM, "Paul Stewart" < [email protected] > wrote: >>>>> Yup … general trends on new data centers are pushing those temperatures >>>>> higher >>>>> for efficiency but also with better designs .. >>>>> One of our data centers runs at 78F and have no issues – each cabinet is >>>>> standard 208V 30A as you mention but can go per cabinet much higher if >>>>> needed >>>>> (ie. 208V 60A for storage arrays) >>>>> From: Af [mailto: [email protected] ] On Behalf Of Eric Kuhnke >>>>> Sent: May 11, 2016 5:15 PM >>>>> To: [email protected] >>>>> Subject: Re: [AFMUG] Data center temperatures >>>>> There have been some fairly large data set studies done shown that air >>>>> intake >>>>> temperature for huge numbers of servers, at 77-78F does not correlate >>>>> with a >>>>> statistically significant rate of failure. >>>>> http://www.datacenterknowledge.com/archives/2008/09/18/intel-servers-do-fine-with-outside-air/ >>>>> http://www.datacenterknowledge.com/archives/2012/03/23/too-hot-for-humans-but-google-servers-keep-humming/ >>>>> how/what you do for cooling is definitely dependent on the load. >>>>> Designing a >>>>> colo facility to use a full 208V 30A circuit per cabinet (5.5kW) in a >>>>> hot/cold >>>>> air separated configuration is very different than 'normal' older >>>>> facilities >>>>> that are one large open room. >>>>> On Wed, May 11, 2016 at 1:58 PM, Ken Hohhof < [email protected] > wrote: >>>>>> I’m not sure you can answer the question without knowing the max heat >>>>>> load per >>>>>> cabinet and how you manage airflow in the cabinets. >>>>>> AFAIK it used to be standard practice to keep data centers as cold as >>>>>> possible >>>>>> without requiring people to wear parkas, but energy efficiency is a >>>>>> consideration now. >>>>>> From: That One Guy /sarcasm >>>>>> Sent: Wednesday, May 11, 2016 3:51 PM >>>>>> To: [email protected] >>>>>> Subject: Re: [AFMUG] Data center temperatures >>>>>> apparently 72 is the the ideal for our noc, i set our thermostat to 60 >>>>>> and it >>>>>> always gets turned back to 72, so i just say fuck it, I wanted new gear >>>>>> in the >>>>>> racks anyway >>>>>> On Wed, May 11, 2016 at 3:46 PM, Larry Smith < [email protected] > wrote: >>>>>>> On Wed May 11 2016 15:37, Josh Luthman wrote: >>>>>>> > Just curious what the ideal temp is for a data center. Our really nice >>>>>>> > building that Sprint ditched ranges from 60 to 90F (on a site >>>>>>> > monitor). >>>>>>> I try to keep my NOC room at about 62F, that puts many of the CPU's >>>>>>> at 83 to 90F. Many of the bigger places I visit will generally be 55 to >>>>>>> 60F. >>>>>>> Loads of computers (data center type) are primarily groupings of little >>>>>>> heaters... >>>>>>> -- >>>>>>> Larry Smith >>>>>>> [email protected] >>>>>> -- >>>>>> If you only see yourself as part of the team but you don't see your team >>>>>> as part >>>>>> of yourself you have already failed as part of the team.
