How exactly is this supposed to help when the car is not in operation? The poster above obviously doesn't live in a very cold climate.
You solve it the same way those of us who work in the industrial world do it.
If it's too hot, you ventilate if you can, and barring that put in a heat exchanger. If it's too cold you install a heater. You're going to need a power source for this some way or another (I never said the solution was pretty).
A cheaper way to solve this would be to use a thermistor or thermal cutout which would kill power or at the very least signal an alarm if the temp got too high. You could use a low-temp switch to do the same thing. With some sequencing you could even turn on a heater and wait until the temp hit operating range before powering up.
If you can't do anything else, try creating a 1-disk stripe for each drive. That's what I have to do with my PCI FastTrak card if I want to access non-striped drives.
I didn't have the option. The BIOS let me select one of two possibilities: RAID0 or RAID1+0, each using both drives.
At any rate I'm a bit of an idiot; hde and hdg were both seen by linux even with the BIOS doing this. I am now happily running stable software RAID1 with ext3 in full-journalled mode. It may be slower than ext2 and hardware-assisted RAID but I know my data (mail spools and queue) is pretty damned safe.:-)
I purchased an ECS K7VTA3 3.1 motherboard for our mail server. I wanted to use Linux software raid 1 for the mail spool / queue since I wasn't keen on doing backups for 1.6G of mail.
The motherboard has a Promise PDC20265R. I didn't care about its RAID abilities, just the fact that it had a pair of ATA100 ports.
The goddamned FastTrack Lite BIOS refuses to leave the drives alone! It sets up the RAID array and then Linux sees only/dev/hde (the primary master). I really don't want to use the Promise RAID driver. Does anyone know a way to either tell the driver to back off and let me use hde/hdg in a (stable, standard) software RAID array or how to get the damned FastTrack BIOS to leave the drives alone altogether?
I hope you are joking about airlines banning nail clippers. Have they gone THAT FAR?
Lord, wher have you been?:-) My wife had her clippers confiscated, broken, and then handed back to her by the security people on her trip to OK. Unreal. I'm surprised they let her wear her diamond engagement ring; they'll leave a nasty tear in your face if you get hit with it.
And it is pretty fun thinking about the expressive power of, say (a|b)*a*b*
That is actually a really boring regex. Lots of a's or b's folowed by lots of a's followed by lots of b's. Wow. My brain is fried.
Actually that regexp matches any text at all. * is 0 or more matches, not one or more. Personally I think the really interesting regexps use lookaheads but that's just me.
Re:Now, if only Google would support regexp search
on
Next Generation Regexp
·
· Score: 2
I'm sorry, but
<John.+Doe>
Should not match "JohnDoe", and should match "John Doe". you need one or more characters between John and Doe in that regexp.
John AND Doe doesn't do shit for you in search engines either. I like the NEAR clause when I am searching for information because I often have to find things like "scanPORT specification" and I end up getting pages talking about a module with scanPORT and the specifications for the module, instead of for scanPORT. Having a NEAR clause or even a <scanPORT.{,30}specification> would help.
Say what you like about M$, but WinXP is a damn sight more stable than KDE!
Nah, it's just your Mandrake install.
I've been running KDE (2.x to 3.0 to now 3.1 CVS) on a Slack8-based system for just under a year now and have not crashed anything unless I was really trying to screw with it. CVS sometimes breaks things but I've never had anything in a true release crash or spontaneously give up on me. I cannot say the same for Win2k.
Sure sometimes an application will crash (OpenOffice mostly, but sometimes KMail if I'm screwing around with GPG options) but it's never taken down the system. Win2k is the exact same in this regard.
Umm, minor detail I cap of hat size wouldn't have a very high voltage rating, 500V if you're lucky. Above that, and it'll likely arc across the dielectric letting out the "magic smoke".
You can hit a million volts by placing lots of 'em in series to build up the voltage withstand. Of course, you reduce the capacitance with each series connection, so you make a string long enough to withstand the voltage and then parallel strings to get your capacitance up.
At 1MV, 5F is one *whack* of charge. Wow my mind hurts just thinking about it.
For moving users, enable the LDAP directory service on the Exchange server and you should be able to script (or find) some LDAP-to-LDAP migration tools.
The biggest problem is that the Outlook schema isn't totally documented (at least that I've found when I on and off look for it) -- the LDIF won't give that to you so you will have trouble importing it.
Although X has it's strengths, working well over high-lag, low-bandwidth connections is not one of them.
See that's where something like XWT would come in nicely. The home computer has the server and client components and it's fast and indistinguishable from any other app. Hit it from a remote location and it's still zippy since all the widget interaction is done on the client, unlike X.
Five-nine reliability in the airline industry would mean that we'd see a major commercial jetliner crash about every other day.
At first I didn't believe you.
According to this page, there were 10 fatal accidents in 18 million flights in 1998. That is a little worse tthan six nines. Five nines would be 180 flights, or almost exactly every other day.
I'm really glad I checked before spouting off.:-) Did you know that stat or did you pull it out of the air?
Now I'm sure I can be targeted for attacks for these complaints. But my mother uses AIM. My *grandmother* uses AIM. DO you think they'd install Cygwin or pay for Tipic? Why would they do that when AIM works fine for them and all of their "buddies" are there.
Nobody said they had to install the Jabber *server* -- you grab a client and hit one of the smaller free servers or get someone (like you?) to set one up somewhere.
It's kind of like the edonkey thing... you can't get on to any of the servers so you set your own up and connect to it. You still get the benefit of the P2P network but now you don't have any more connection troubles.:-)
What could does it do me to sit on Jabber and talk to myself when I can't communicate with my buddies on AIM (since aim-t was still broken last I checked due to IP blocks by AOL)?
Do what I did; set up your own Jabber server. aim-t and whatnot gets blocked because there are too many people on it and it becomes a target. Setting up a Jabber server isn't all that difficult and takes up next to zero bandwidth. Find a buddy, use a work computer (sell them on the idea of using Jabber for IM)... It's fun, and it works. I run Jabber with aim-t, msn-t and icqv7-t.
Have you ever tried using an HT://dig search? I despise that search tool on the basis that the results it throws back are not ranked all that well and (this is easily fixed) ugly.
It's been a while since I've checked it out, maybe it has improved.
Give OpenOffice (or StarOffice if you need the extra filters or the Access-like component) -- We used Access and Excel in a huge way but now StarOffice has replaced it without causing any of our office staff any trouble. Definately worth a try.
Unfortunately you're absolutely correct about Director and Dreamweaver (although Quanta is showing some real promise). Quark is evil nasty horrible software.
I used to work at a hardware manufacturing place (instrumentation, not computers) where they tested for fan failures. It was called the "Stuck Fan test", and it involved jamming a screwdriver into the fan and holding it there for a set time to see if anything happened.
I assume they were testing for equipment failure do to thermal overload, not fan explosions and the like. Almost all small cooling fans are "muffin" fans and they're impedance protected. You stop the blade and they don't draw tons of current trying to turn it.
Ahhh, that's good design, many motors are fan cooled (the fan being driven by the rotor). In computer fans I assumed a proportion of the airflow from was used to cool the motor.
I thought so too. Unlike "normal" motors, the stator in these little muffin fans is the center and the rotor is the outside. There's a "hoop" of magnetic material which makes up the rotor and then you have your coils and control electronics on a small PCB at the center (stator). I can't see much airflow getting up into that area. These aren't much like the AC industrial motors I play with where the stator is packed against the outside frame and the shaft fan blows air across/through the motor.
In industrial motors e.g. 5kW corporate AirCon units a big fan is attached to the rotor to cool the motor itself. It's assumed that the fan won't fail (same as ships assume propellers won't fail causing overspeed if it does) and that the motor will run with a minimum RPM (otherwise the rotor fan will lose CFM whilst increasing heat is generated by the current through the windings to handle the torque). High resistance windings in 5kW motors to withstand stalling strikes me as very inefficient. I scaled it down to small fans, hmmmmmmm, can still cause a burnt commutator.
Exactly. I used to design AC soft starters so the rotor spinning at anything other than 1450rpm for significant time was rare. (We did some 7 and 14% jogging but we time-limited the operation.) Now that we're into variable frequency drives the norm is to have a much smaller blower motor driving the fan instead of having the fan hang of the rear shaft of the drive motor.
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So, uhm, my point... I'd see if there isn't a jumper you can set to disable the RAID function, and just use them as straight IDE controllers.
I appreciate the imput but this motherboard has no such setting, not on the board itself nor in the BIOS. Oh well. I have it fixed now I think. :-)
How exactly is this supposed to help when the car is not in operation? The poster above obviously doesn't live in a very cold climate.
You solve it the same way those of us who work in the industrial world do it.
If it's too hot, you ventilate if you can, and barring that put in a heat exchanger. If it's too cold you install a heater. You're going to need a power source for this some way or another (I never said the solution was pretty).
A cheaper way to solve this would be to use a thermistor or thermal cutout which would kill power or at the very least signal an alarm if the temp got too high. You could use a low-temp switch to do the same thing. With some sequencing you could even turn on a heater and wait until the temp hit operating range before powering up.
If you can't do anything else, try creating a 1-disk stripe for each drive. That's what I have to do with my PCI FastTrak card if I want to access non-striped drives.
I didn't have the option. The BIOS let me select one of two possibilities: RAID0 or RAID1+0, each using both drives.
At any rate I'm a bit of an idiot; hde and hdg were both seen by linux even with the BIOS doing this. I am now happily running stable software RAID1 with ext3 in full-journalled mode. It may be slower than ext2 and hardware-assisted RAID but I know my data (mail spools and queue) is pretty damned safe. :-)
I purchased an ECS K7VTA3 3.1 motherboard for our mail server. I wanted to use Linux software raid 1 for the mail spool / queue since I wasn't keen on doing backups for 1.6G of mail.
The motherboard has a Promise PDC20265R. I didn't care about its RAID abilities, just the fact that it had a pair of ATA100 ports.
The goddamned FastTrack Lite BIOS refuses to leave the drives alone! It sets up the RAID array and then Linux sees only /dev/hde (the primary master). I really don't want to use the Promise RAID driver. Does anyone know a way to either tell the driver to back off and let me use hde/hdg in a (stable, standard) software RAID array or how to get the damned FastTrack BIOS to leave the drives alone altogether?
I hope you are joking about airlines banning nail clippers. Have they gone THAT FAR?
Lord, wher have you been? :-) My wife had her clippers confiscated, broken, and then handed back to her by the security people on her trip to OK. Unreal. I'm surprised they let her wear her diamond engagement ring; they'll leave a nasty tear in your face if you get hit with it.
An early UID and a quarter still won't buy me a cup of coffee. :)
True, although some slobbering /.er might buy you some warm Bawls. :-)
- And it is pretty fun thinking about the expressive power of, say (a|b)*a*b*
That is actually a really boring regex. Lots of a's or b's folowed by lots of a's followed by lots of b's. Wow. My brain is fried.Actually that regexp matches any text at all. * is 0 or more matches, not one or more. Personally I think the really interesting regexps use lookaheads but that's just me.
I'm sorry, but
<John.+Doe>
Should not match "JohnDoe", and should match "John Doe". you need one or more characters between John and Doe in that regexp.
John AND Doe doesn't do shit for you in search engines either. I like the NEAR clause when I am searching for information because I often have to find things like "scanPORT specification" and I end up getting pages talking about a module with scanPORT and the specifications for the module, instead of for scanPORT. Having a NEAR clause or even a <scanPORT.{,30}specification> would help.
The only guy I know who could beat you that actually posts is Unitrode. Congrats. :-)
Ha! In your face #67146! I'm #1575!
Say what you like about M$, but WinXP is a damn sight more stable than KDE!
Nah, it's just your Mandrake install.
I've been running KDE (2.x to 3.0 to now 3.1 CVS) on a Slack8-based system for just under a year now and have not crashed anything unless I was really trying to screw with it. CVS sometimes breaks things but I've never had anything in a true release crash or spontaneously give up on me. I cannot say the same for Win2k.
Sure sometimes an application will crash (OpenOffice mostly, but sometimes KMail if I'm screwing around with GPG options) but it's never taken down the system. Win2k is the exact same in this regard.
Damn sight more stable my ass...
Umm, minor detail I cap of hat size wouldn't have a very high voltage rating, 500V if you're lucky. Above that, and it'll likely arc across the dielectric letting out the "magic smoke".
You can hit a million volts by placing lots of 'em in series to build up the voltage withstand. Of course, you reduce the capacitance with each series connection, so you make a string long enough to withstand the voltage and then parallel strings to get your capacitance up.
At 1MV, 5F is one *whack* of charge. Wow my mind hurts just thinking about it.
For moving users, enable the LDAP directory service on the Exchange server and you should be able to script (or find) some LDAP-to-LDAP migration tools.
The biggest problem is that the Outlook schema isn't totally documented (at least that I've found when I on and off look for it) -- the LDIF won't give that to you so you will have trouble importing it.
Steltor makes a canned solution. We're evaluating it for our company. Very nice. About the same price as Exchange, though.
Although X has it's strengths, working well over high-lag, low-bandwidth connections is not one of them.
See that's where something like XWT would come in nicely. The home computer has the server and client components and it's fast and indistinguishable from any other app. Hit it from a remote location and it's still zippy since all the widget interaction is done on the client, unlike X.
Five-nine reliability in the airline industry would mean that we'd see a major commercial jetliner crash about every other day.
At first I didn't believe you.
According to this page, there were 10 fatal accidents in 18 million flights in 1998. That is a little worse tthan six nines. Five nines would be 180 flights, or almost exactly every other day.
I'm really glad I checked before spouting off. :-) Did you know that stat or did you pull it out of the air?
while SIMPLE is basically all talk.
um, isn't that the point? :-)
Now I'm sure I can be targeted for attacks for these complaints. But my mother uses AIM. My *grandmother* uses AIM. DO you think they'd install Cygwin or pay for Tipic? Why would they do that when AIM works fine for them and all of their "buddies" are there.
Nobody said they had to install the Jabber *server* -- you grab a client and hit one of the smaller free servers or get someone (like you?) to set one up somewhere.
It's kind of like the edonkey thing... you can't get on to any of the servers so you set your own up and connect to it. You still get the benefit of the P2P network but now you don't have any more connection troubles. :-)
Gaim? No thank you, I've got Psi - WAY better. I can actually get messages instead of chats, it's slim, trim and Jabber-oriented. Themable, too.
Available for Linux, Win32 and MacOS-X. The developer is really cool too; he's integrated a couple of my ideas and accepts bugfixes.
What could does it do me to sit on Jabber and talk to myself when I can't communicate with my buddies on AIM (since aim-t was still broken last I checked due to IP blocks by AOL)?
Do what I did; set up your own Jabber server. aim-t and whatnot gets blocked because there are too many people on it and it becomes a target. Setting up a Jabber server isn't all that difficult and takes up next to zero bandwidth. Find a buddy, use a work computer (sell them on the idea of using Jabber for IM)... It's fun, and it works. I run Jabber with aim-t, msn-t and icqv7-t.
Ventura is a far better program for multicolor prepress work.
Yeah, what he said. :-)
Have you ever tried using an HT://dig search? I despise that search tool on the basis that the results it throws back are not ranked all that well and (this is easily fixed) ugly.
It's been a while since I've checked it out, maybe it has improved.
MS office is still superior
Give OpenOffice (or StarOffice if you need the extra filters or the Access-like component) -- We used Access and Excel in a huge way but now StarOffice has replaced it without causing any of our office staff any trouble. Definately worth a try.
Unfortunately you're absolutely correct about Director and Dreamweaver (although Quanta is showing some real promise). Quark is evil nasty horrible software.
I used to work at a hardware manufacturing place (instrumentation, not computers) where they tested for fan failures. It was called the "Stuck Fan test", and it involved jamming a screwdriver into the fan and holding it there for a set time to see if anything happened.
I assume they were testing for equipment failure do to thermal overload, not fan explosions and the like. Almost all small cooling fans are "muffin" fans and they're impedance protected. You stop the blade and they don't draw tons of current trying to turn it.
Ahhh, that's good design, many motors are fan cooled (the fan being driven by the rotor). In computer fans I assumed a proportion of the airflow from was used to cool the motor.
I thought so too. Unlike "normal" motors, the stator in these little muffin fans is the center and the rotor is the outside. There's a "hoop" of magnetic material which makes up the rotor and then you have your coils and control electronics on a small PCB at the center (stator). I can't see much airflow getting up into that area. These aren't much like the AC industrial motors I play with where the stator is packed against the outside frame and the shaft fan blows air across/through the motor.
In industrial motors e.g. 5kW corporate AirCon units a big fan is attached to the rotor to cool the motor itself. It's assumed that the fan won't fail (same as ships assume propellers won't fail causing overspeed if it does) and that the motor will run with a minimum RPM (otherwise the rotor fan will lose CFM whilst increasing heat is generated by the current through the windings to handle the torque). High resistance windings in 5kW motors to withstand stalling strikes me as very inefficient. I scaled it down to small fans, hmmmmmmm, can still cause a burnt commutator.
Exactly. I used to design AC soft starters so the rotor spinning at anything other than 1450rpm for significant time was rare. (We did some 7 and 14% jogging but we time-limited the operation.) Now that we're into variable frequency drives the norm is to have a much smaller blower motor driving the fan instead of having the fan hang of the rear shaft of the drive motor.