Re: [CentOS] power outage-save / like embedded systems

2014-10-01 Thread Leon Fauster
Am 01.10.2014 um 00:53 schrieb John R Pierce pie...@hogranch.com: On 9/30/2014 3:42 PM, Leon Fauster wrote: Sure, for servers but I am talking about a small 9W-power-consumption appliance that have this requirement:-) I don't think CentOS is the appropriate distribution for that sort of

[CentOS] power outage-save / like embedded systems

2014-09-30 Thread Leon Fauster
I would like to setup a small system based on CentOS6 power outage-save as possible. The hardware will be switch off by pulling the plug. To accomplishing this goal, I would mounting some fs parts readonly (e.g. /usr) and thinking about tmpfs for volatile parts (e.g. lock, run under var).

Re: [CentOS] power outage-save / like embedded systems

2014-09-30 Thread m . roth
Leon Fauster wrote: I would like to setup a small system based on CentOS6 power outage-save as possible. The hardware will be switch off by pulling the plug. To accomplishing this goal, I would mounting some fs parts readonly (e.g. /usr) and thinking about tmpfs for volatile parts (e.g.

Re: [CentOS] power outage-save / like embedded systems

2014-09-30 Thread Valeri Galtsev
On Tue, September 30, 2014 12:08 pm, m.r...@5-cent.us wrote: Leon Fauster wrote: I would like to setup a small system based on CentOS6 power outage-save as possible. The hardware will be switch off by pulling the plug. To accomplishing this goal, I would mounting some fs parts readonly

Re: [CentOS] power outage-save / like embedded systems

2014-09-30 Thread John R Pierce
On 9/30/2014 10:28 AM, Valeri Galtsev wrote: And APC is the best in my experience. (Of course, there will be a couple of brands with hardware on the same level...) actually, I'd take an Eaton Powerware (formerly Best Power) over a APC any day. APC BackUPS grade stuff is strictly cheap

Re: [CentOS] power outage-save / like embedded systems

2014-09-30 Thread Valeri Galtsev
On Tue, September 30, 2014 12:50 pm, John R Pierce wrote: On 9/30/2014 10:28 AM, Valeri Galtsev wrote: And APC is the best in my experience. (Of course, there will be a couple of brands with hardware on the same level...) actually, I'd take an Eaton Powerware (formerly Best Power) over a

Re: [CentOS] power outage-save / like embedded systems

2014-09-30 Thread m . roth
John R Pierce wrote: On 9/30/2014 10:28 AM, Valeri Galtsev wrote: And APC is the best in my experience. (Of course, there will be a couple of brands with hardware on the same level...) actually, I'd take an Eaton Powerware (formerly Best Power) over a APC any day. APC BackUPS grade stuff

Re: [CentOS] power outage-save / like embedded systems

2014-09-30 Thread John R Pierce
On 9/30/2014 11:06 AM, Valeri Galtsev wrote: Is there anything similar to apcupsd for that (preferably open source)? (I do remember ferrups... they have a whole GUI power management package that runs on linux but I tend to use the more basic shell-only stuff. most of the Eatons I've used

Re: [CentOS] power outage-save / like embedded systems

2014-09-30 Thread John R Pierce
On 9/30/2014 11:22 AM, m.r...@5-cent.us wrote: The SmartUPS are... but then, overwhelmingly, mine are rackmount. I have mentioned here, before, though, that at least with the SmartUPS, you can easily, and far less expensively, buy replacement batteries, but they *MUST* be HR (high rate)

Re: [CentOS] power outage-save / like embedded systems

2014-09-30 Thread m . roth
John R Pierce wrote: On 9/30/2014 11:22 AM, m.r...@5-cent.us wrote: The SmartUPS are... but then, overwhelmingly, mine are rackmount. I have mentioned here, before, though, that at least with the SmartUPS, you can easily, and far less expensively, buy replacement batteries, but they *MUST*

Re: [CentOS] power outage-save / like embedded systems

2014-09-30 Thread Valeri Galtsev
On Tue, September 30, 2014 1:23 pm, John R Pierce wrote: On 9/30/2014 11:06 AM, Valeri Galtsev wrote: Is there anything similar to apcupsd for that (preferably open source)? (I do remember ferrups... they have a whole GUI power management package that runs on linux but I tend to use the

Re: [CentOS] power outage-save / like embedded systems

2014-09-30 Thread John R Pierce
On 9/30/2014 11:52 AM, Valeri Galtsev wrote: I was thinking more in line of what apcupsd does: it runs as a daemon, talks to UPS (and puts wall message about events like power loss...), and executes command to cleanly shut down the box if less than (whatever % of battery juice you configured to

Re: [CentOS] power outage-save / like embedded systems

2014-09-30 Thread Leon Fauster
Am 30.09.2014 um 19:08 schrieb m.r...@5-cent.us: Leon Fauster wrote: I would like to setup a small system based on CentOS6 power outage-save as possible. The hardware will be switch off by pulling the plug. To accomplishing this goal, I would mounting some fs parts readonly (e.g. /usr) and

Re: [CentOS] power outage-save / like embedded systems

2014-09-30 Thread John R Pierce
On 9/30/2014 3:42 PM, Leon Fauster wrote: Am 30.09.2014 um 19:08 schriebm.r...@5-cent.us: Leon Fauster wrote: I would like to setup a small system based on CentOS6 power outage-save as possible. The hardware will be switch off by pulling the plug. To accomplishing this goal, I would mounting

Re: [CentOS] Power-outage

2011-07-07 Thread Lamar Owen
On Wednesday, July 06, 2011 05:23:36 PM John R Pierce wrote: On 07/06/11 2:07 PM, Ljubomir Ljubojevic wrote: This part of the thread is about DC input ATX power supplies, ah. thats not what is commonly referred to as 'the ATX connector', so I was confused. If you looked at the power

Re: [CentOS] Power-outage

2011-07-07 Thread Always Learning
On Wed, 2011-07-06 at 11:23 +0200, Ljubomir Ljubojevic wrote: There are smaller and cheaper 12V solutions Like the picoPSU's: http://www.mini-box.com/picoPSU-160-XT Impressive. Thanks. Just need a 12v something to work the screen :-) -- With best regards, Paul. England, EU. 1 June 2010

Re: [CentOS] Power-outage

2011-07-07 Thread Ljubomir Ljubojevic
Lamar Owen wrote: On Wednesday, July 06, 2011 05:23:36 PM John R Pierce wrote: On 07/06/11 2:07 PM, Ljubomir Ljubojevic wrote: This part of the thread is about DC input ATX power supplies, ah. thats not what is commonly referred to as 'the ATX connector', so I was confused. If you

Re: [CentOS] Power-outage

2011-07-07 Thread Lamar Owen
On Thursday, July 07, 2011 12:05:30 PM Ljubomir Ljubojevic wrote: Well, it is not viable to run PC of the batteries (for long), but hooking it up directly to the battery of the UPS (so UPS charges that battery) is what I intend to do (There is nowhere to purchase them in my country yet :-(

Re: [CentOS] Power-outage

2011-07-06 Thread Emmanuel Noobadmin
On 7/6/11, Marko Vojinovic vvma...@gmail.com wrote: By (b) I mean having computer graphics overlayed on top of real-world scenery (like in Terminator or Robocop movies). I'm just saying that this kind of overlay is impossible to achieve with a regular human eye, except with very bulky

Re: [CentOS] Power-outage

2011-07-06 Thread Ljubomir Ljubojevic
Lamar Owen wrote: On Saturday, July 02, 2011 09:00:54 AM Jason Pyeron wrote: You will either need many different batteries for the different voltages (1.2, 3.3, 5, 12, -12, -5) or a DC ATX power supply (not cheap and not very powerful until the 48V input variety) A company called

Re: [CentOS] Power-outage

2011-07-06 Thread Lamar Owen
On Wednesday, July 06, 2011 05:23:32 AM Ljubomir Ljubojevic wrote: Lamar Owen wrote: We have a number of their -48V input supplies in use. No, the 500W version in 12V input is not cheap. There are smaller and cheaper 12V solutions Like the picoPSU's:

Re: [CentOS] Power-outage

2011-07-06 Thread John R Pierce
On 07/06/11 5:44 AM, Lamar Owen wrote: Sure; we have a couple of small units like that for some solar-powered things we're doing here; however, the max I've seen for those plug-in type small ATX/ITX power supplies has been in the ~200W range (the specific one you linked to is only 160W),

Re: [CentOS] Power-outage

2011-07-06 Thread Rudi Ahlers
On Wed, Jul 6, 2011 at 6:24 PM, John R Pierce pie...@hogranch.com wrote: On 07/06/11 5:44 AM, Lamar Owen wrote: Sure; we have a couple of small units like that for some solar-powered things we're doing here; however, the max I've seen for those plug-in type small ATX/ITX power supplies has

Re: [CentOS] Power-outage

2011-07-06 Thread Lamar Owen
On Wednesday, July 06, 2011 12:24:12 PM John R Pierce wrote: 500 watts at 12VDC is 41 amps. that requires some hefty wiring, and if you have to run it any distances, either the wire is ridiculously heavy (and expensive) or you suffer from voltage drop under load. While not CentOS-specific,

Re: [CentOS] Power-outage

2011-07-06 Thread Keith Roberts
On Wed, 6 Jul 2011, John R Pierce wrote: To: centos@centos.org From: John R Pierce pie...@hogranch.com Subject: Re: [CentOS] Power-outage On 07/06/11 5:44 AM, Lamar Owen wrote: Sure; we have a couple of small units like that for some solar-powered things we're doing here; however

Re: [CentOS] Power-outage

2011-07-06 Thread Timothy Murphy
Ljubomir Ljubojevic wrote: Hook up ethernet, if its not POE, you plug it in, attach all the various usb cables, vga, serial, ps/2, ect ect to the server and let it hang. When your server is unresponsive just go ahead and hit the IP you assigned to your Spider, and you get a full console,

Re: [CentOS] Power-outage

2011-07-06 Thread Ljubomir Ljubojevic
John R Pierce wrote: On 07/06/11 5:44 AM, Lamar Owen wrote: Sure; we have a couple of small units like that for some solar-powered things we're doing here; however, the max I've seen for those plug-in type small ATX/ITX power supplies has been in the ~200W range (the specific one you

Re: [CentOS] Power-outage

2011-07-06 Thread Ljubomir Ljubojevic
Timothy Murphy wrote: Ljubomir Ljubojevic wrote: Hook up ethernet, if its not POE, you plug it in, attach all the various usb cables, vga, serial, ps/2, ect ect to the server and let it hang. When your server is unresponsive just go ahead and hit the IP you assigned to your Spider, and you

Re: [CentOS] Power-outage

2011-07-06 Thread John R Pierce
On 07/06/11 1:41 PM, Ljubomir Ljubojevic wrote: I would/will only use 12V power for direct connection from UPS battery to ATX connector. It reduces conversion losses and power draw. if by ATX connector, you mean the one on the motherboard, a standard ATX mainboard requires REGULATED 12 volts,

Re: [CentOS] Power-outage

2011-07-06 Thread Ljubomir Ljubojevic
John R Pierce wrote: On 07/06/11 1:41 PM, Ljubomir Ljubojevic wrote: I would/will only use 12V power for direct connection from UPS battery to ATX connector. It reduces conversion losses and power draw. if by ATX connector, you mean the one on the motherboard, a standard ATX mainboard

Re: [CentOS] Power-outage

2011-07-06 Thread John R Pierce
On 07/06/11 2:07 PM, Ljubomir Ljubojevic wrote: This part of the thread is about DC input ATX power supplies, and I was referring to 12V input ATX power supply and the length of the cable between 12V source and 12V input PSU. Direct was meant to mean dirrectly from battery of the UPS to DC

Re: [CentOS] Power-outage

2011-07-05 Thread Emmanuel Noobadmin
On 7/5/11, Rajagopal Swaminathan raju.rajs...@gmail.com wrote: rant I was running a shop with two servers as ltsp with about 100 thin clients and a dozen projectors. One 20 KVA UPS powered all of them There was another 25KVS for critical fan light etc. Withing two years at least 20 (out

Re: [CentOS] Power-outage

2011-07-05 Thread John R Pierce
On 07/04/11 11:44 PM, Emmanuel Noobadmin wrote: Otherwise, the single large UPS becomes the single point of failure. the good big ones are fully redundant and every component is hot swappable. but yeah, distributed UPS the way google did it is rather sweet. As long as part of their operating

Re: [CentOS] Power-outage

2011-07-05 Thread John R. Dennison
On Tue, Jul 05, 2011 at 02:44:30PM +0800, Emmanuel Noobadmin wrote: Can people at least pretend to keep this list on-topic? 89 responses for an off-topic post is a little much, don't you think? Item 3 under Guidelines as listed at: http://www.centos.org/modules/tinycontent/index.php?id=16

Re: [CentOS] Power-outage

2011-07-05 Thread Timothy Murphy
Steven Crothers wrote: Hook up ethernet, if its not POE, you plug it in, attach all the various usb cables, vga, serial, ps/2, ect ect to the server and let it hang. When your server is unresponsive just go ahead and hit the IP you assigned to your Spider, and you get a full console, virtual

Re: [CentOS] Power-outage

2011-07-05 Thread Ljubomir Ljubojevic
Timothy Murphy wrote: Steven Crothers wrote: Hook up ethernet, if its not POE, you plug it in, attach all the various usb cables, vga, serial, ps/2, ect ect to the server and let it hang. When your server is unresponsive just go ahead and hit the IP you assigned to your Spider, and you get

Re: [CentOS] Power-outage

2011-07-05 Thread Lamar Owen
On Saturday, July 02, 2011 09:00:54 AM Jason Pyeron wrote: You will either need many different batteries for the different voltages (1.2, 3.3, 5, 12, -12, -5) or a DC ATX power supply (not cheap and not very powerful until the 48V input variety) A company called PowerStream produces DC input

Re: [CentOS] Power-outage

2011-07-05 Thread Bowie Bailey
On 7/2/2011 7:34 PM, Marko Vojinovic wrote: I could in principle imagine all that coming in the future, but the monitor == shades thing is just only Fi with no Sci in it. A human eye cannot focus properly on any object which is closer to the eye than 10-15 cm (depending on the eye quality),

Re: [CentOS] Power-outage

2011-07-04 Thread James Matthews
They have cheaper smaller UPS's that should be able to help you. On Fri, Jul 1, 2011 at 7:05 AM, Timothy Murphy gayle...@eircom.net wrote: I have a CentOS-5.6 remote server in a house in Italy, where there are occasional thunder-storms. There was one yesterday, when the electricity went off

Re: [CentOS] Power-outage

2011-07-04 Thread John R Pierce
On 07/01/11 4:05 AM, Timothy Murphy wrote: It seems to me that it should be possible to have a simple, torch-battery operated assuming 'torch' in this context means what us yank's call a flashlight, and that a 'torch battery' is a C or D cell, lets see how much juice we could get out of a

Re: [CentOS] Power-outage

2011-07-04 Thread Timothy Murphy
James Matthews wrote: They have cheaper smaller UPS's that should be able to help you. What UPS's are you suggesting? (I didn't really follow your remark.) -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity

Re: [CentOS] Power-outage

2011-07-04 Thread Rudi Ahlers
On Tue, Jul 5, 2011 at 12:14 AM, Timothy Murphy gayle...@eircom.net wrote: John R Pierce wrote: Nb I didn't say, or mean to say, that I wanted to _make_ a flashlight UPS. My electronic skill is close to zero. Well, that's your first problem - not knowing how todo it :) I was simply

Re: [CentOS] Power-outage

2011-07-04 Thread Ljubomir Ljubojevic
Timothy Murphy wrote: I've been completely convinced that a UPS is what I need, and am trying to source the APC UPS-BE350G, which was recommended. I used APC Back-UPS CS BK500EI in a company that I service and with their app (on Windows) I stretched lower and higher Volt boundary to something

Re: [CentOS] Power-outage

2011-07-04 Thread Les Mikesell
On 7/4/11 5:14 PM, Timothy Murphy wrote: I've been completely convinced that a UPS is what I need, and am trying to source the APC UPS-BE350G, which was recommended. One thing that might not have been mentioned yet: somewhere around three years out, a small UPS will cause an outage you

Re: [CentOS] Power-outage

2011-07-04 Thread John R Pierce
On 07/04/11 3:40 PM, Les Mikesell wrote: One thing that might not have been mentioned yet: somewhere around three years out, a small UPS will cause an outage you wouldn't have otherwise when it fails. Generally replacing the battery will fix this, but by 6-10 years other components will

Re: [CentOS] Power-outage

2011-07-04 Thread Steven Crothers
Hook up ethernet, if its not POE, you plug it in, attach all the various usb cables, vga, serial, ps/2, ect ect to the server and let it hang. When your server is unresponsive just go ahead and hit the IP you assigned to your Spider, and you get a full console, virtual media, mass storage

Re: [CentOS] Power-outage

2011-07-04 Thread Rajagopal Swaminathan
Greetings, On 7/5/11, Les Mikesell lesmikes...@gmail.com wrote: On 7/4/11 5:14 PM, Timothy Murphy wrote: Generally replacing the battery will fix this, but by 6-10 years other components will go too. rant I was running a shop with two servers as ltsp with about 100 thin clients and a

Re: [CentOS] Power-outage

2011-07-03 Thread Timothy Murphy
Steven Crothers wrote: You should invest in a Spider KVM or similar, they hang off the back and don't use any rack space. They can also be POE, so they wont use a plug. That'll provide you out of band management and remote reboots and what not. How exactly would that work? -- Timothy

Re: [CentOS] Power-outage

2011-07-03 Thread Emmanuel Noobadmin
On 7/3/11, Marko Vojinovic vvma...@gmail.com wrote: be a good investment, but still I wonder why there are no offers on the market with a boosted PSU units that can sustain DC power for a couple of seconds during the AC blinks. They don't even need to use a battery, maybe a set of

Re: [CentOS] Power-outage

2011-07-03 Thread Emmanuel Noobadmin
On 7/3/11, Robert Heller hel...@deepsoft.com wrote: (I'm guessing that Google's massive array of battery powered servers use things like Atom processors or some other mobile or embeded processing elements on their custom motherboards, which might be a customized variant of a laptop or embedded

Re: [CentOS] Power-outage

2011-07-03 Thread Emmanuel Noobadmin
On 7/3/11, Les Mikesell lesmikes...@gmail.com wrote: If you are facebook, you can design/demand whatever you want, including single-voltage motherboards. Not sure why everyone else put up with the problem for so long. Legacy support and pure economies of scale :D

Re: [CentOS] Power-outage

2011-07-03 Thread Ljubomir Ljubojevic
Rajagopal Swaminathan wrote: Greetings,, On 7/3/11, Robert Heller hel...@deepsoft.com wrote: At Sat, 2 Jul 2011 18:58:14 +0100 CentOS mailing list centos@centos.org wrote: There is (in the SciFi world) the idea that someday 'desktops' in the current / conventional sense may completely

Re: [CentOS] Power-outage

2011-07-03 Thread Ljubomir Ljubojevic
Ljubomir Ljubojevic wrote: Rajagopal Swaminathan wrote: Greetings,, On 7/3/11, Robert Heller hel...@deepsoft.com wrote: At Sat, 2 Jul 2011 18:58:14 +0100 CentOS mailing list centos@centos.org wrote: There is (in the SciFi world) the idea that someday 'desktops' in the current /

Re: [CentOS] Power-outage

2011-07-03 Thread Robert Heller
At Sun, 3 Jul 2011 04:30:37 +0100 CentOS mailing list centos@centos.org wrote: On Sunday 03 July 2011 00:51:29 Robert Heller wrote: There is (in the SciFi world) the idea that someday 'desktops' in the current / conventional sense may completely vanish from the universe, taken over

Re: [CentOS] Power-outage

2011-07-02 Thread Timothy Murphy
Emmanuel Noobadmin wrote: It seems to me that it should be possible to have a simple, torch-battery operated, system which will keep the machine alive long enough to make a graceful exit. Like others have suggested, a cheap UPS is the way to go. I'm convinced. Could you (or anyone) suggest

Re: [CentOS] Power-outage

2011-07-02 Thread Jason Pyeron
-Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Timothy Murphy Sent: Saturday, July 02, 2011 8:52 To: centos@centos.org Subject: Re: [CentOS] Power-outage Emmanuel Noobadmin wrote: It seems to me that it should be possible

Re: [CentOS] Power-outage

2011-07-02 Thread Timothy Murphy
Jason Pyeron wrote: Could you (or anyone) suggest a cheap UPS? This is only a tiny server (HP MicroServer) on a home LAN. http://www.amazon.com/APC-Back-UPS-shutdown-software-UPS- BE350G/dp/B001985SWW/ Thanks, I'll look into that. I'm sure you are right, as I know nothing at all about

Re: [CentOS] Power-outage

2011-07-02 Thread Christopher Chan
On Saturday, July 02, 2011 09:42 PM, Timothy Murphy wrote: Jason Pyeron wrote: Could you (or anyone) suggest a cheap UPS? This is only a tiny server (HP MicroServer) on a home LAN. http://www.amazon.com/APC-Back-UPS-shutdown-software-UPS- BE350G/dp/B001985SWW/ Thanks, I'll look into that.

Re: [CentOS] Power-outage

2011-07-02 Thread Jussi Hirvi
On 1.7.2011 18.49, m.r...@5-cent.us wrote: ah, the smell of fresh plastic outgassing, factory air from China :((( Probably more the smell of fire prevention chemicals outgassing. Be careful! I am sensitized to that smell. - Jussi ___ CentOS mailing

Re: [CentOS] Power-outage

2011-07-02 Thread Jussi Hirvi
On 1.7.2011 18.49, m.r...@5-cent.us wrote: ah, the smell of fresh plastic outgassing, factory air from China :((( Probably more the smell of fire prevention chemicals outgassing. Be careful! As for me, I am sensitized to that smell. - Jussi ___

Re: [CentOS] Power-outage

2011-07-02 Thread Robert Heller
At Sat, 02 Jul 2011 14:52:27 +0200 CentOS mailing list centos@centos.org wrote: Emmanuel Noobadmin wrote: It seems to me that it should be possible to have a simple, torch-battery operated, system which will keep the machine alive long enough to make a graceful exit. Like others

Re: [CentOS] Power-outage

2011-07-02 Thread Robert Heller
At Sat, 02 Jul 2011 15:42:38 +0200 CentOS mailing list centos@centos.org wrote: Jason Pyeron wrote: Could you (or anyone) suggest a cheap UPS? This is only a tiny server (HP MicroServer) on a home LAN. http://www.amazon.com/APC-Back-UPS-shutdown-software-UPS- BE350G/dp/B001985SWW/

Re: [CentOS] Power-outage

2011-07-02 Thread fred smith
On Sat, Jul 02, 2011 at 10:45:13AM -0400, Robert Heller wrote: At Sat, 02 Jul 2011 15:42:38 +0200 CentOS mailing list centos@centos.org wrote: Jason Pyeron wrote: Could you (or anyone) suggest a cheap UPS? This is only a tiny server (HP MicroServer) on a home LAN.

Re: [CentOS] Power-outage

2011-07-02 Thread Devin Reade
Bowie Bailey bowie_bai...@buc.com wrote: If you don't require a long runtime, then you don't need to get a huge UPS. APC's website has a calculator that can help you determine which UPS will work best based on your equipment and desired runtime. However, give yourself some leeway to allow

Re: [CentOS] Power-outage

2011-07-02 Thread Marko Vojinovic
On Saturday 02 July 2011 15:45:11 Robert Heller wrote: At Sat, 02 Jul 2011 14:52:27 +0200 CentOS mailing list centos@centos.org wrote: Emmanuel Noobadmin wrote: It seems to me that it should be possible to have a simple, torch-battery operated, system which will keep the machine alive

Re: [CentOS] Power-outage

2011-07-02 Thread Jason Pyeron
-Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Marko Vojinovic Sent: Saturday, July 02, 2011 13:10 To: CentOS mailing list Subject: Re: [CentOS] Power-outage On Saturday 02 July 2011 15:45:11 Robert Heller wrote: At Sat, 02

Re: [CentOS] Power-outage

2011-07-02 Thread Jason Pyeron
-Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Marko Vojinovic Sent: Saturday, July 02, 2011 13:10 To: CentOS mailing list Subject: Re: [CentOS] Power-outage On Saturday 02 July 2011 15:45:11 Robert Heller wrote: At Sat, 02

Re: [CentOS] Power-outage

2011-07-02 Thread Marko Vojinovic
On Saturday 02 July 2011 18:21:27 Jason Pyeron wrote: But surely computers actually use DC, so couldn't my torch-battery device just supply the PC components directly? A PC uses several *different* DC voltages: +12, +5, +3.3, and several others and they need to be

Re: [CentOS] Power-outage

2011-07-02 Thread Les Mikesell
On 7/2/11 12:58 PM, Marko Vojinovic wrote: If a laptop can have several *different* and *precise* voltages from a single DC battery, why the desktop cannot? If you are facebook, you can design/demand whatever you want, including single-voltage motherboards. Not sure why everyone else put up

Re: [CentOS] Power-outage

2011-07-02 Thread Robert Nichols
On 07/02/2011 12:07 PM, Devin Reade wrote: There is one flaw that I know of with APC brand UPSes, although I wouldn't be surprised if other UPSes are similar (since APC has traditionally set the standard in the market): There is a small window between the time that the UPS initiates a

Re: [CentOS] Power-outage

2011-07-02 Thread Devin Reade
Ljubomir Ljubojevic off...@plnet.rs wrote: First is to have LAN power controller/switch, can't remember how you call it. It can monitor several inputs like voltage, on/off, etc, and it can be used to cut and restore power, as well as reboot. They have web interface and are accessible via

Re: [CentOS] Power-outage

2011-07-02 Thread Robert Heller
At Sat, 2 Jul 2011 18:10:09 +0100 CentOS mailing list centos@centos.org wrote: On Saturday 02 July 2011 15:45:11 Robert Heller wrote: At Sat, 02 Jul 2011 14:52:27 +0200 CentOS mailing list centos@centos.org wrote: Emmanuel Noobadmin wrote: It seems to me that it should be possible

Re: [CentOS] Power-outage

2011-07-02 Thread Robert Heller
At Sat, 2 Jul 2011 18:58:14 +0100 CentOS mailing list centos@centos.org wrote: On Saturday 02 July 2011 18:21:27 Jason Pyeron wrote: But surely computers actually use DC, so couldn't my torch-battery device just supply the PC components directly? A PC uses several

Re: [CentOS] Power-outage

2011-07-02 Thread Marko Vojinovic
On Saturday 02 July 2011 21:13:59 Robert Heller wrote: I'm using an UPS for my desktop system, but I don't need it for the laptop. If the AC power drops, even for a moment, the laptop battery will kick in and sustain the machine. I just think that the same thing can be implemented for the

Re: [CentOS] Power-outage

2011-07-02 Thread Robert Heller
At Sun, 3 Jul 2011 00:34:18 +0100 CentOS mailing list centos@centos.org wrote: On Saturday 02 July 2011 21:13:59 Robert Heller wrote: I'm using an UPS for my desktop system, but I don't need it for the laptop. If the AC power drops, even for a moment, the laptop battery will kick in

Re: [CentOS] Power-outage

2011-07-02 Thread Jason Pyeron
-Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Devin Reade Sent: Saturday, July 02, 2011 15:51 To: CentOS mailing list Subject: Re: [CentOS] Power-outage Ljubomir Ljubojevic off...@plnet.rs wrote: First is to have LAN power

Re: [CentOS] Power-outage

2011-07-02 Thread Rajagopal Swaminathan
Greetings,, On 7/3/11, Robert Heller hel...@deepsoft.com wrote: At Sat, 2 Jul 2011 18:58:14 +0100 CentOS mailing list centos@centos.org wrote: There is (in the SciFi world) the idea that someday 'desktops' in the current / conventional sense may completely vanish from the universe,

Re: [CentOS] Power-outage

2011-07-02 Thread Marko Vojinovic
On Sunday 03 July 2011 00:51:29 Robert Heller wrote: There is (in the SciFi world) the idea that someday 'desktops' in the current / conventional sense may completely vanish from the universe, taken over progressably by laptops, tablets, smart phones, wearable computers (motherboard ==

Re: [CentOS] Power-outage

2011-07-02 Thread Drew
Robert Heller suggested that UPS architecture matters: AC-DC::DC Batteries::DC-AC Where input AC is electrically decoupled from output AC. Not many adverts for UPS's explain whether this is the case with their UPS. APC's SmartUPS line, Liebert, and Eaton Powerware are all true-sine wave

Re: [CentOS] Power-outage

2011-07-02 Thread 夜神 岩男
On Sat, 2011-07-02 at 03:03 +0800, Emmanuel Noobadmin wrote: On 7/1/11, Timothy Murphy gayle...@eircom.net wrote: It seems to me that it should be possible to have a simple, torch-battery operated, system which will keep the machine alive long enough to make a graceful exit. A

Re: [CentOS] Power-outage

2011-07-02 Thread Steven Crothers
You should invest in a Spider KVM or similar, they hang off the back and don't use any rack space. They can also be POE, so they wont use a plug. That'll provide you out of band management and remote reboots and what not. On Fri, Jul 1, 2011 at 7:05 AM, Timothy Murphy gayle...@eircom.net wrote:

[CentOS] Power-outage

2011-07-01 Thread Timothy Murphy
I have a CentOS-5.6 remote server in a house in Italy, where there are occasional thunder-storms. There was one yesterday, when the electricity went off 3 times, for a second or so on each occasion. My server, an HP MicroServer, came back (re-booted) on 2 of the 3 occasions, but not on the

Re: [CentOS] Power-outage

2011-07-01 Thread John Hodrien
On Fri, 1 Jul 2011, Timothy Murphy wrote: I have a CentOS-5.6 remote server in a house in Italy, where there are occasional thunder-storms. There was one yesterday, when the electricity went off 3 times, for a second or so on each occasion. snip Just buy a really basic UPS. I don't know

Re: [CentOS] Power-outage

2011-07-01 Thread Rudi Ahlers
On Fri, Jul 1, 2011 at 1:05 PM, Timothy Murphy gayle...@eircom.net wrote: I have a CentOS-5.6 remote server in a house in Italy, where there are occasional thunder-storms. There was one yesterday, when the electricity went off 3 times, for a second or so on each occasion. My server, an HP

Re: [CentOS] Power-outage

2011-07-01 Thread Robert Heller
At Fri, 1 Jul 2011 12:26:10 +0100 (BST) CentOS mailing list centos@centos.org wrote: On Fri, 1 Jul 2011, Timothy Murphy wrote: I have a CentOS-5.6 remote server in a house in Italy, where there are occasional thunder-storms. There was one yesterday, when the electricity went off 3

Re: [CentOS] Power-outage

2011-07-01 Thread Ryan Wagoner
On Fri, Jul 1, 2011 at 7:05 AM, Timothy Murphy gayle...@eircom.net wrote: I have a CentOS-5.6 remote server in a house in Italy, where there are occasional thunder-storms. There was one yesterday, when the electricity went off 3 times, for a second or so on each occasion. My server, an HP

Re: [CentOS] Power-outage

2011-07-01 Thread John Hodrien
On Fri, 1 Jul 2011, Robert Heller wrote: With a non-Linux compatable UPS, you can use a old analog serial modem as a power sensor. If the machine has a serial port (RS-232), you can plug the modem into the wall outlet and connect it to the computer's serial port. When the power goes out, the

Re: [CentOS] Power-outage

2011-07-01 Thread Ljubomir Ljubojevic
Robert Heller wrote: At Fri, 1 Jul 2011 12:26:10 +0100 (BST) CentOS mailing list centos@centos.org wrote: On Fri, 1 Jul 2011, Timothy Murphy wrote: I have a CentOS-5.6 remote server in a house in Italy, where there are occasional thunder-storms. There was one yesterday, when the

Re: [CentOS] Power-outage

2011-07-01 Thread m . roth
Ryan Wagoner wrote: On Fri, Jul 1, 2011 at 7:05 AM, Timothy Murphy gayle...@eircom.net wrote: I have a CentOS-5.6 remote server in a house in Italy, where there are occasional thunder-storms. There was one yesterday, when the electricity went off 3 times, for a second or so on each

Re: [CentOS] Power-outage

2011-07-01 Thread m . roth
Ljubomir Ljubojevic wrote: Robert Heller wrote: At Fri, 1 Jul 2011 12:26:10 +0100 (BST) CentOS mailing list centos@centos.org wrote: On Fri, 1 Jul 2011, Timothy Murphy wrote: I have a CentOS-5.6 remote server in a house in Italy, where there are occasional thunder-storms. There was one

Re: [CentOS] Power-outage

2011-07-01 Thread John Hodrien
On Fri, 1 Jul 2011, m.r...@5-cent.us wrote: *shrug* I think all the UPSs I've seen for consumers in the last five years seem to have a USB port to go to the computer. That, and apcupsd, are all you need. Only if it speaks the right language which doesn't seem to be guaranteed. apcupsd didn't

Re: [CentOS] Power-outage

2011-07-01 Thread Ljubomir Ljubojevic
John Hodrien wrote: On Fri, 1 Jul 2011, m.r...@5-cent.us wrote: *shrug* I think all the UPSs I've seen for consumers in the last five years seem to have a USB port to go to the computer. That, and apcupsd, are all you need. Only if it speaks the right language which doesn't seem to be

Re: [CentOS] Power-outage

2011-07-01 Thread John Hodrien
On Fri, 1 Jul 2011, Ljubomir Ljubojevic wrote: John Hodrien wrote: On Fri, 1 Jul 2011, m.r...@5-cent.us wrote: *shrug* I think all the UPSs I've seen for consumers in the last five years seem to have a USB port to go to the computer. That, and apcupsd, are all you need. Only if it speaks

Re: [CentOS] Power-outage

2011-07-01 Thread m . roth
Ljubomir Ljubojevic wrote: John Hodrien wrote: On Fri, 1 Jul 2011, m.r...@5-cent.us wrote: *shrug* I think all the UPSs I've seen for consumers in the last five years seem to have a USB port to go to the computer. That, and apcupsd, are all you need. Only if it speaks the right language

Re: [CentOS] Power-outage

2011-07-01 Thread Brent L. Bates
apcupsd is only suppose to work with APC's UPS's and the apcupsd developer will not deal with complaints about UPS's from other manufacturers. If your non-APC UPS works with apcupsd, then count yourself lucky. If you want to use another manufacturer's UPS, check out NUT

Re: [CentOS] Power-outage

2011-07-01 Thread Fajar Priyanto
On Fri, Jul 1, 2011 at 7:05 PM, Timothy Murphy gayle...@eircom.net wrote: It seems to me that it should be possible to have a simple, torch-battery operated, system which will keep the machine alive long enough to make a graceful exit. A full-blown UPS would be excessive, I think, as I only

Re: [CentOS] Power-outage

2011-07-01 Thread Colin Coles
On Friday 01 July 2011 12:05, Timothy Murphy wrote: Any advice or suggestions gratefully received. If you are thinking of the UPS route a caveat: I have several HP servers and most of them will not work on cheap UPS's as they do not produce the pure sine wave modern HP machines require but

Re: [CentOS] Power-outage

2011-07-01 Thread Nicolas Thierry-Mieg
Colin Coles wrote: On Friday 01 July 2011 12:05, Timothy Murphy wrote: Any advice or suggestions gratefully received. If you are thinking of the UPS route a caveat: I have several HP servers and most of them will not work on cheap UPS's as they do not produce the pure sine wave modern HP

Re: [CentOS] Power-outage

2011-07-01 Thread m . roth
Nicolas Thierry-Mieg wrote: Colin Coles wrote: On Friday 01 July 2011 12:05, Timothy Murphy wrote: Any advice or suggestions gratefully received. If you are thinking of the UPS route a caveat: I have several HP servers and most of them will not work on cheap UPS's as they do not produce the

Re: [CentOS] Power-outage

2011-07-01 Thread Colin Coles
On Friday 01 July 2011 15:25, Nicolas Thierry-Mieg wrote: Colin Coles wrote: On Friday 01 July 2011 12:05, Timothy Murphy wrote: Any advice or suggestions gratefully received. If you are thinking of the UPS route a caveat: I have several HP servers and most of them will not work on

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