Neat :) Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On May 15, 2016 12:26 AM, "Faisal Imtiaz" <[email protected]> wrote:
> 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 <[email protected]> >> *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 <[email protected]> >> >> *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. >> >> >> >> >> >
