#power-consumption

[sevennet-blog]

How to: Why does unpartitioned Hitachi HDS5C3020 drive start consuming 50% more power 15 minutes after boot? #solution #computers #programming

How to: Why does unpartitioned Hitachi HDS5C3020 drive start consuming 50% more power 15 minutes after boot? #solution #computers #programming

Why does unpartitioned Hitachi HDS5C3020 drive start consuming 50% more power 15 minutes after boot?

In a Debian 6.0.6 system there are 74 pieces of 2TB Toshiba DT01ABA200 drives. These drives are identified as Hitachi HDS5C3020BLE630 drives running firmware revision MZ4OAAB0. 64 Drives attached via HP SAS expander cards to an LSI 2008 SAS controller, another 5 drives are connected directly to…

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[sevennet-blog]

How to: Will spinning down hard disks create Linux Raid problems? #fix #dev #answer

How to: Will spinning down hard disks create Linux Raid problems? #fix #dev #answer

Will spinning down hard disks create Linux Raid problems?

I’m setting up a server that will need to be accessible 24/7 but will be rarely accessed (archive storage). To save heat/power, I’m thinking of setting hard disks to spin down using hdparm.

However, I wondered if this could cause unreliability as the storage is a Linux RAID 10 array. i.e. could delay in spinning up cause a drive to be…

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[stackcopybiz]

Fix: Does installing larger RAM means consuming more energy? #solution #computers #development

Fix: Does installing larger RAM means consuming more energy? #solution #computers #development

Does installing larger RAM means consuming more energy?

Since every bit of a dynamic memory module needs to be refreshed to keep it’s data, does that mean that if I install a module with more capacity than the current one on my laptop, more energy will be consumed?

And how big will the difference in energy consumption be?

Answer [by William Hilsum]: Does installing larger RAM means consuming…

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[stackcopybiz]

Solution: How can I calculate power consumption of my PC in Watt? #dev #fix #development

Solution: How can I calculate power consumption of my PC in Watt? #dev #fix #development

How can I calculate power consumption of my PC in Watt?

How can I calculate power consumption of my PC in Watts, to prove my House owner (I live on rent), my PC doesn’t consume much power? He blames me for huge power bills even though he uses a Fridge, A.C. etc and his son watches the TV all the time.

We both share one power meter so for bill we pay 50%-50% but he is saying I use PC all the time…

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[goodanswerbiz]

Fixed: Which is better - 30 AMP 220V circuit or 60 AMP 120V circuit #computers #development #it

Fixed: Which is better – 30 AMP 220V circuit or 60 AMP 120V circuit #computers #development #it

Which is better – 30 AMP 220V circuit or 60 AMP 120V circuit

I’m looking for advice on which electrical service I should have run to a rack that I have in a data center.

The price is the same for either a 30 AMP 220V circuit or a 60 AMP 120V curcuit.

I realize that these two curcuits are delivering effectivly the same amount of usable power, however I’m curious if one is better than the other. I…

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[sevennet-blog]

Answer: Which is better - 30 AMP 220V circuit or 60 AMP 120V circuit #solution #fix #it

Answer: Which is better – 30 AMP 220V circuit or 60 AMP 120V circuit #solution #fix #it

Which is better – 30 AMP 220V circuit or 60 AMP 120V circuit

I’m looking for advice on which electrical service I should have run to a rack that I have in a data center.

The price is the same for either a 30 AMP 220V circuit or a 60 AMP 120V curcuit.

I realize that these two curcuits are delivering effectivly the same amount of usable power, however I’m curious if one is better than the other. I…

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[goodanswerbiz]

Fixed: How do I calculate cooling cost per server? #fix #programming #it

Fixed: How do I calculate cooling cost per server? #fix #programming #it

How do I calculate cooling cost per server?

I’m attempting to figure out the power/cooling draw for some old servers that I’d virtualized.

Starting with info in this question, I’ve taken the 880W the old boxes appeared to be drawing (according to the APC logs), and gotten 2765 BTUs/hr, or 1 ton of cooling every 4.34 hours.

At this point I’m scratching my head as to how to figure the cost for…

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[sevennet-blog]

Resolved: How do I calculate cooling cost per server? #it #solution #answer

Resolved: How do I calculate cooling cost per server? #it #solution #answer

How do I calculate cooling cost per server?

I’m attempting to figure out the power/cooling draw for some old servers that I’d virtualized.

Starting with info in this question, I’ve taken the 880W the old boxes appeared to be drawing (according to the APC logs), and gotten 2765 BTUs/hr, or 1 ton of cooling every 4.34 hours.

At this point I’m scratching my head as to how to figure the cost for…

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