Cooling Take a look at heat pumps for local heat dumps. Do not run your ac on UPS
Peak shaving Run your generators during peak loads Use the heat from your gen set to cool the datacenter (continuous-cycle absorption cooling) http://www.nh3tech.org/absorption.html Use solar / wind to recharge the battery bank.
smart non data center power use turn off elevators/automatic doors during peak usage use efficient low level/low power (led) lighting.
Have your users pay a heat tax per 100wt
Look not only at the cost upfront but the total cost over the life of the data center. There are a whole bunch more, but it depends on your needs/design/issues.
the I-RAM2 is gonna come out Q1 2006, 300 G/ps sata, stick in a 5.25 drive bay,perhaps with external power, 8 slots and ddr2.
http://vr-zone.com/?i=3052 (the good stuff so we do not crash the vr-zone server)
Gigabyte for the first time has unveiled the specifications of their upcoming i-RAM 2 during HKEPC Tech-day. The i-RAM 2 will be using DDR2 memories instead of DDR1 and the data transfer interface is SATA 3Gb/s double of the current SATA 1.5 Gb/s. It will be externally housed with by means of an external case or fitted into the 5.25" bay with eSATA interfaces. The number of memory slots are expected to double to 8 and you can have up to 16GB max memory. The expected announcement of i-RAM 2 is targeted for February next year.
we see that in the 32 bit land, 2003E is the only thing that starts to come close to using that amount of memory. and its 1-2k (USD)
so assuming i'm made of money, and have stuffed my box with $5k of memory and i want to get a little more boost out of it, i can go 15k rpm SAS (with extra cost, and heatloads) or i can go 6x I-RAM2, raid 0. 96 gig of space at 1200 G/s throughput.
other programs like, mail servers, proxies, web servers, and Photoshop requires lots of fast swap space, and most people are unable to use more than 4 gigs of memory, (those running 32 bit windows).
Its a nice product, IF you have maxed out the 4gb limit for your o/s and/or you have to have ubber fast swap/cache.
back when i was at a CDN this would have been a no brainier to raid up in an external chassis (I-RAM1) and connect to a 16/24 port sata controller. We would not have cared that it was only as big as the large sata drive and cost as much as a new car,it got the job done.
There is a place for silicon drives that do not cost as much as a car, if you do not see the need for yourself, great. I would rather wait for I-RAM2 to come out and use it where it makes sense,wherever i need a huge honken bit of fast space.
My backup server is a good example. I have a few boxes dumping deltas as fast as they can across a couple gigE ports to a backup server, so that server can toss them to LTO.
my backups are only as fast as the slowest device, having a I-RAM2 raid 0, works for me. the other boxes are waiting on their local/network issues, not on my backup servers slow large raid. (the x-fer to the slow raid can happen whenever, as long as i have enough space in the I-RAM2 array for the next dump.
right now disk is the slow part in the local box,this addresses the issue
Slashdot Mirror
Heat source managementA /id.300/.f efficiency %95A /id.417/.f efficiency %97
e _right_power/page3.html and http://www.tomshardware.com/2005/07/11/how_thg_tes ts_power_supplies/page3.html for more info.
Do not put large transformers in HVAC space.
Encourage the use of dc power supplies. (12 24 48 72)
http://www.mini-box.com/s.nl/sc.8/category.13/it.
http://www.mini-box.com/s.nl/sc.8/category.13/it.
this is only %70 at full load http://www.powerstream.com/DC-PC-48V.htm other units can be %30-%75 see http://www.tomshardware.com/2004/01/22/getting_th
Cooling
Take a look at heat pumps for local heat dumps.
Do not run your ac on UPS
Peak shaving
Run your generators during peak loads
Use the heat from your gen set to cool the datacenter (continuous-cycle absorption cooling) http://www.nh3tech.org/absorption.html
Use solar / wind to recharge the battery bank.
smart non data center power use
turn off elevators/automatic doors during peak usage
use efficient low level/low power (led) lighting.
Have your users pay a heat tax per 100wt
Look not only at the cost upfront but the total cost over the life of the data center. There are a whole bunch more, but it depends on your needs/design/issues.
this is SO lastyear for /.
/RAM_Drive/Gigabyte/I-RAM/index.htm
http://www.tomshardware.com/2005/09/07/can_gigabyt e/page8.html
look at 2 cards in raid0
the I-RAM2 is gonna come out Q1 2006, 300 G/ps sata, stick in a 5.25 drive bay,perhaps with external power, 8 slots and ddr2.
http://vr-zone.com/?i=3052
(the good stuff so we do not crash the vr-zone server)
Gigabyte for the first time has unveiled the specifications of their upcoming i-RAM 2 during HKEPC Tech-day. The i-RAM 2 will be using DDR2 memories instead of DDR1 and the data transfer interface is SATA 3Gb/s double of the current SATA 1.5 Gb/s. It will be externally housed with by means of an external case or fitted into the 5.25" bay with eSATA interfaces. The number of memory slots are expected to double to 8 and you can have up to 16GB max memory. The expected announcement of i-RAM 2 is targeted for February next year.
http://www.cluboverclocker.com/reviews/hard_drives
review of I-RAM1
so assuming that I-RAM2 scales as well as I-RAM1,2 of these should get 500 G/sec or so.not bad for a 64gb drive.
now WHY are people doing this, and not just adding memory?well, assuming i have a nifty MB such as
http://www.iwill.net/product_2.asp?p_id=102
i can have up to 32 gb of memory on the MB if we look at the o/s selection guide for windows...
32-bit 64-bit
XP Pro 4 GB / 1-2 CPUs 128 GB / 1-2 CPUs
2003, Standard 4 GB / 1-4 CPUs 32 GB / 1-4 CPUs
2003, Enterprise 32 GB / 1-8 CPUs 1 terabyte / 1-8 CPUs
2003 SP1, Ent 64 GB / 1-8 CPUs 1 terabyte / 1-8 CPUs
2003, Datacenter 64 GB / 1-32 CPUs 1 terabyte / 1-64 CPUs
2003 SP1, Data 128 GB/ 1-32 CPU 1 terabyte / 1-64 CPUs
we see that in the 32 bit land, 2003E is the only thing that starts to come close to using that amount of memory. and its 1-2k (USD)
so assuming i'm made of money, and have stuffed my box with $5k of memory and i want to get a little more boost out of it, i can go 15k rpm SAS (with extra cost, and heatloads) or i can go 6x I-RAM2, raid 0. 96 gig of space at 1200 G/s throughput.
other programs like, mail servers, proxies, web servers, and Photoshop requires lots of fast swap space, and most people are unable to use more than 4 gigs of memory, (those running 32 bit windows).
Its a nice product, IF you have maxed out the 4gb limit for your o/s and/or you have to have ubber fast swap/cache.
back when i was at a CDN this would have been a no brainier to raid up in an external chassis (I-RAM1) and connect to a 16/24 port sata controller. We would not have cared that it was only as big as the large sata drive and cost as much as a new car,it got the job done.
There is a place for silicon drives that do not cost as much as a car, if you do not see the need for yourself, great. I would rather wait for I-RAM2 to come out and use it where it makes sense,wherever i need a huge honken bit of fast space.
My backup server is a good example. I have a few boxes dumping deltas as fast as they can across a couple gigE ports to a backup server, so that server can toss them to LTO.
my backups are only as fast as the slowest device, having a I-RAM2 raid 0, works for me. the other boxes are waiting on their local/network issues, not on my backup servers slow large raid. (the x-fer to the slow raid can happen whenever, as long as i have enough space in the I-RAM2 array for the next dump.
right now disk is the slow part in the local box,this addresses the issue