NAS appliances?
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Posted by Ken on June 26, 2008, 2:06 pm
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>> >> I'm using a Mini-ITX system. It use only 25 Watt. >> http://tekniken.se/docs/pcny30gb.html >
> > Interesting. I had often thought about battery power for a couple > of Epia based systems I had here, but they are running with the > standard DC-DC converter that came with the (Morex) case whose > documentation was none-existent. I see that here you are doing it > with a special automotive unit which presumably has a greater > voltage tolerance. > > Are you sure about that backup time though? A 75Ah car battery > should theoretically power a 25W system for 36 _hours_, not minutes, > assuming a nominal 12V. Something seems to be amiss there. It is possible to run this as long as I want, but the DC/DC-converter has some configurable timing settings for automatic shut down 5s, 30s, 30 min, 3 hours or no shut down. 30 minutes is perfect for me. http://resources.mini-box.com/online/PWR-M1-ATX/PWR-M1-ATX-manual.pdf | |||||||||||||||||||||||||||||||||||||||||||||||||
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Posted by Stephen Howard on June 25, 2008, 8:30 am
Please log in for more thread options >> Indeed, I still have an old Celeron (500-odd MHz) on i810
>> motherboard from Compaq or HP that refuses to die. I put a >> couple RAID cards and a GbE card in it, transplated that >> mATX board to a full tower case to hold 8 drives and it's >> never had a problem (knock on wood). >> >> For a basic NAS you wouldn't even need to tweak Win2k very >> much, for few concurrent users in a home use it wouldn't >> even need have more than about 128MB memory. >> >> For someone who doesn't have a spare old system for this >> there are a number of surplus sites that have reasonably >> priced systems including OS license. For example, >> http://www.geeks.com/details.asp?invtid=IBMNVPIV18-20B&cat=SYS >> http://clearancezone.directron.us/item.php?list=492 >> though I don't think OS being included is very important, on >> any hardware made in the last ten years one can just use a >> plain vanilla linux server install, not needing to try for >> some ultra small footprint FreeNAS/etc build >
>Thanks for the responses so far, but I had in mind one of the >dedicated NAS units. This machine is going to be running 24/7. >Andrew Smallshaw touched upon size and noise which is certainly a >consideration but I'm very concerned about power consumption with the >state of electric prices at the moment. Surely a dedicated unit would >be lower than a full blown machine, and they can't all be truly awful? It's a valid concern - but I was kinda hoping to take advantage of things like Wake on Lan etc. or a scheduled startup time. I suppose 'green' is the byword these days - but I'm pretty sure an old 'recycled' W2K box has more credentials than a brand-new NAS box, particularly if it can be made to be largely fanless in operation. Regards, -- Stephen Howard - Woodwind repairs & period restorations www.shwoodwind.co.uk Emails to: showardshwoodwindcouk | |||||||||||||||||||||||||||||||||||||||||||||||||
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Posted by kony on June 25, 2008, 1:14 pm
Please log in for more thread options On Wed, 25 Jun 2008 12:30:59 +0000, Stephen Howard
>>Thanks for the responses so far, but I had in mind one of the
>>dedicated NAS units. This machine is going to be running 24/7. >>Andrew Smallshaw touched upon size and noise which is certainly a >>consideration but I'm very concerned about power consumption with the >>state of electric prices at the moment. Surely a dedicated unit would >>be lower than a full blown machine, and they can't all be truly awful? >
>It's a valid concern - but I was kinda hoping to take advantage of >things like Wake on Lan etc. or a scheduled startup time. >I suppose 'green' is the byword these days - but I'm pretty sure an >old 'recycled' W2K box has more credentials than a brand-new NAS box, >particularly if it can be made to be largely fanless in operation. > >Regards, Some old systems can run ok from one exhaust fan on the PSU, but completely fanless would be bad for a typical old system as well as for a typical modern standalone NAS. | |||||||||||||||||||||||||||||||||||||||||||||||||
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Posted by Stephen Howard on June 26, 2008, 4:49 am
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>On Wed, 25 Jun 2008 12:30:59 +0000, Stephen Howard
> > >>>Thanks for the responses so far, but I had in mind one of the
>>>dedicated NAS units. This machine is going to be running 24/7. >>>Andrew Smallshaw touched upon size and noise which is certainly a >>>consideration but I'm very concerned about power consumption with the >>>state of electric prices at the moment. Surely a dedicated unit would >>>be lower than a full blown machine, and they can't all be truly awful? >>
>>It's a valid concern - but I was kinda hoping to take advantage of >>things like Wake on Lan etc. or a scheduled startup time. >>I suppose 'green' is the byword these days - but I'm pretty sure an >>old 'recycled' W2K box has more credentials than a brand-new NAS box, >>particularly if it can be made to be largely fanless in operation. >> >
>Some old systems can run ok from one exhaust fan on the PSU, >but completely fanless would be bad for a typical old system >as well as for a typical modern standalone NAS. I have a couple of PIII 600Mhz boxes that are fanless ( excepting the PSU, naturally ) - not sure I'd want to chance it with anything much faster than that. Regards, -- Stephen Howard - Woodwind repairs & period restorations www.shwoodwind.co.uk Emails to: showardshwoodwindcouk | |||||||||||||||||||||||||||||||||||||||||||||||||
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Posted by kony on June 26, 2008, 12:42 pm
Please log in for more thread options On Thu, 26 Jun 2008 08:49:36 +0000, Stephen Howard
>
>>On Wed, 25 Jun 2008 12:30:59 +0000, Stephen Howard
>> >> >>>>Thanks for the responses so far, but I had in mind one of the
>>>>dedicated NAS units. This machine is going to be running 24/7. >>>>Andrew Smallshaw touched upon size and noise which is certainly a >>>>consideration but I'm very concerned about power consumption with the >>>>state of electric prices at the moment. Surely a dedicated unit would >>>>be lower than a full blown machine, and they can't all be truly awful? >>> >>>It's a valid concern - but I was kinda hoping to take advantage of >>>things like Wake on Lan etc. or a scheduled startup time. >>>I suppose 'green' is the byword these days - but I'm pretty sure an >>>old 'recycled' W2K box has more credentials than a brand-new NAS box, >>>particularly if it can be made to be largely fanless in operation. >>> >>
>>Some old systems can run ok from one exhaust fan on the PSU, >>but completely fanless would be bad for a typical old system >>as well as for a typical modern standalone NAS. >
>I have a couple of PIII 600Mhz boxes that are fanless ( excepting the >PSU, naturally ) - not sure I'd want to chance it with anything much >faster than that. > >Regards, It's fairly possible a bit higher, using P3 or Celeron Coppermine/Tualatin, or something from Via. Beyond a certain point it would need a duct from the PSU to pull more air over a fairly large heatsink. There might not be much point to it though, as you can now find socket A sinks for cheap, maybe $6, that allow using a 80x25mm fan. The processors produce low enough heat levels that such a fan can run well under 1000 RPM and be inaudible outside of the case. | |||||||||||||||||||||||||||||||||||||||||||||||||
| Similar Threads | Posted |
| NAS appliances? | June 23, 2008, 11:22 am |
>>> complete with hard drive and optical drive often only has a 60W
>>> supply. That is a maximum requirement under load - idling ISTR I
>>> have seen figures in the 30W region bandied about.