what did you learn today?
- Thread starter chalex
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At least for ESXi the first update has already been released. They incremented the build number but didn't increment the release number.
Of course, no change log is available.
Of course, no change log is available.
Between CA and the location, I'm starting to suspect you work where I used to.
What I learned today, or at least recently:
Apache 1.3 uses libraries that have a file descriptor limit of 1024 per process. When you have a set of test servers with separate environments for each engineer (sometimes multiple each), this limit is a bit of a problem.
I also learned something interesting about round-robin DNS, but that's a more extensive writeup that'll probably go in Networking in a day or two.
Yeah, I got that yesterday (probably over the weekend but do not check work email then, especially on a holiday). Kind of funny that so many large companies were apparently running an EOL engine that was an N-2 version to boot.
I learnt today that I really need to pay attention to my first rule of troubleshooting - "Check the physical."
Case in point - I have a stack of HP 6730s laptops on my desk, and only the top one is plugged in and turned on. The BIOS would post, no keystrokes would register, Windows would chime to indicate that it was starting, and the screen would go black. Move the mouse, tap on the keys, add an external keyboard, nothing would wake it up. I'd do something, and suddenly it would wake up - at least one of these wake-ups was me lifting the laptop to move it elsewhere, and putting it back down didn't blank the screen again.
Long story short, someone else came over after I'd been fighting this for a few hours, and got intrigued by it, and lifted the laptop up, moved it around, twisted it etc.
It turned out, that if the stack was perfectly aligned, the bloody magnet it the lid BELOW the open laptop caused the sensor to register that the laptop lid was closed.
*twitch*
I damn near threw those laptops out the window.
Case in point - I have a stack of HP 6730s laptops on my desk, and only the top one is plugged in and turned on. The BIOS would post, no keystrokes would register, Windows would chime to indicate that it was starting, and the screen would go black. Move the mouse, tap on the keys, add an external keyboard, nothing would wake it up. I'd do something, and suddenly it would wake up - at least one of these wake-ups was me lifting the laptop to move it elsewhere, and putting it back down didn't blank the screen again.
Long story short, someone else came over after I'd been fighting this for a few hours, and got intrigued by it, and lifted the laptop up, moved it around, twisted it etc.
It turned out, that if the stack was perfectly aligned, the bloody magnet it the lid BELOW the open laptop caused the sensor to register that the laptop lid was closed.
*twitch*
I damn near threw those laptops out the window.
After the nth time suggesting using both NTFS and File Share permissions to provide the same level of access control both locally and over the network is an exercise in frustration and watching your coworkers beat their heads off a wall until the penny finally drops is completely demoralising.
It's especially bad when one of them spits through his teeth when you suggest only relying on NTFS permissions is akin to "letting the whole world have access to the files!"
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It's especially bad when one of them spits through his teeth when you suggest only relying on NTFS permissions is akin to "letting the whole world have access to the files!"
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--Originally posted by Pangenitor:
After the nth time suggesting using both NTFS and File Share permissions to provide the same level of access control both locally and over the network is an exercise in frustration and watching your coworkers beat their heads off a wall until the penny finally drops is completely demoralising.
It's especially bad when one of them spits through his teeth when you suggest only relying on NTFS permissions is akin to "letting the whole world have access to the files!"
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Dear god. Fairly certain that MS has a document somewhere that says, for fileshares, to set Share permissions to Change for Auth Users unless it really should be read-only, and then do everything through NTFS.
Check the weight capacity of your data center floor before buying a SAN rack that weighs 1800 pounds.
Oh, yeah. That's definitely a good idea. The HP 12K array we have for one of our customers weighs in a just over 2000 lbs/rack (IIRC) when fully populated. I'm gonna have to put supports under the floor tiles where the legs sit. -- -- And they told us solid-state stuff would be much lighter. Screw it -- let's go back to tubes! lol
-- And they told us solid-state stuff would be much lighter. Screw it -- let's go back to tubes! lolCurious minds want to know, did the rack actually tip over or fall through the floor? Pictures or it didn't happen --
--Today, I learned that the "upgrade" to vSphere 4 was actually a downgrade: unless we shell out about 5 time te price we paid for our current license, we're not able to hot-add disks to VM any more. The consequence is that our VM backup system, which depends on being able to dynamically adding and removing virtual disks to VMs, wouldn't work any more.
Glad someone is amused. I was in a wicked foul mood while working with those laptops.
I just learned that I should periodically check for new versions of my netapp documentation. v4.4 only had 75 pages while v4.5.2 has 95 pages.
Thanks for the heads up.
Blackberries (well, the Curve model at least) and iPhones have a litmus paper water sensor inside, so when a user claims their device suddenly "stopped working" I can check to see if they actually drowned the device (and cleaned it off) and I can bust them in their little scam.
On a BB Curve, it's under the trackball... now I get to sit back and laugh at the user who tried to pull a fast one. Perhaps they'll learn that when the company is handing over a $500 item for your use (replacement cost), you better treat it with a bit more care than a cheap little cell phone.
On a BB Curve, it's under the trackball... now I get to sit back and laugh at the user who tried to pull a fast one. Perhaps they'll learn that when the company is handing over a $500 item for your use (replacement cost), you better treat it with a bit more care than a cheap little cell phone.
I learned today that it's a really good idea to double-check all BIOS settings after installing another physical CPU in a Dell server. We've found that the Intel VT setting gets defaulted back to "off" with this sort of change, and that meant that none of the 64-bit guests came back online when VMWare fired up.
no, I was smart enough to look at the actual packing list and noticed the weight before the movers started bringing it into the data center.Originally posted by gradster:
Curious minds want to know, did the rack actually tip over or fall through the floor? Pictures or it didn't happen --
Originally posted by gchapman:
no, I was smart enough to look at the actual packing list and noticed the weight before the movers started bringing it into the data center.Originally posted by gradster:
Curious minds want to know, did the rack actually tip over or fall through the floor? Pictures or it didn't happen --
As much as I wanted to see some pictures, I'm glad you didn't have to deal with the nightmare that would have been.
After about 30 days those turn due to simple pulling moisture out of the air. Seriously, we have 300+ BB's and every single 8820 we are turning in has changed color. In fact we often have to fight with AT&T because they see the color change on premi-death units that are still very much under warranty. Btw we've seen ~20% DOA/premi death on the Bold's which is not quite as bad as our first run 8820's but it's still really, really bad.
I can vouch for the humidity changing the color of the liquid test. I live in a pretty humid area but it can happen in drier areas by leaving your phone in the bathroom while you take a hot shower.
Ahh, good to know, thanks! I'll have to pull mine apart to see what the indicator shows, mine has definitely not seen any scuba action!
Originally posted by V_Max:
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Are you saying you've never done it? Really? I think almost everyone who's owned a cellphone for more than 6 months probably has at some point.
I don't really take my phone in the shower/bathroom either. Not like I'm going to reach out of the shower to answer it, so having it close by is not a real attractive ides to me.
After hearing how my company's CFO managed to send both his cell phone and 2 way pager (this was 5+ years ago) into a just used, unflushed toilet, I tend to keep portable electronics out of the kitchen/bathroom areas if I can help it.
After hearing how my company's CFO managed to send both his cell phone and 2 way pager (this was 5+ years ago) into a just used, unflushed toilet, I tend to keep portable electronics out of the kitchen/bathroom areas if I can help it.
Moisture sensors in Southern Louisiana are worthless. I've seen them go off on SAN packaging inside boxes just from being outside for a few minutes.
I worked on boats for a few years and AT&T tried to tell my that I had dunked my phone. Despite the fact that I had to buff out corrosion on the inside of the phone to get it working again, no, I did not submerge it.
Nope. I also do not answer the bathroom while taking a crap, which apparently is not a "line" that my coworkers worry about crossing :/
I have answered the phone while urinating. Mind you, I was in a bar. And the person who was calling me was also urinating. I hang out with a lot of drunks, because, well, I drink a lot.
It is also nice to have the netapp ESX host utilities on your ESX hosts, even if they are NFS.
Quite a difference between the pisser and the crapper. Sure, you can mute between splashes, but I do not want to hear you grunt or the strain in your voice.
Originally posted by V_Max:
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I’ve taken calls while I was in the shower, assuming one my hands isnÂ’t all soapy. Normally I do this just so people will hang up and leave me alone until I get into work, but didnÂ’t stop the marketing director.
Me: This is twdog, sorry about the noise IÂ’m in the shower ... (then I pause for a couple of seconds so they can apologize and say theyÂ’ll call back later) ...
Her: Glad youÂ’re up! So the problem is ... blah, blah, blah ... Can you see the outlook error on my screen?
Me: Um, no, IÂ’m in the shower (then I paused again).
Her: Oh, so youÂ’re still in it? So do think the issue with the recipient? Or maybe ... blah, blah, blah ...
I learned I need to invent something that will allow you to kill people through the phone.
I’m a flabby, pasty, out of shape geek talking a shower and the phone has a camera. I think that could kill someone.
I once spent days trying to understand the cause of the excess interrupt load that a SparcStation 20 was experiencing (it had 2 S-Bus fibre cards (pre Fibre Channel technology at 25MB/sec IIRC) a fast wide SCSI card, and a 100mbit half duplex network card). This was maybe £20,000 worth of Sparcstation 20.
Eventually, I concluded there was a hardware fault and walked down the 3 flights of stairs to start swapping modules out, only to find someone had dropped something on the keyboard, and it was responding to several keys being held down. :-((.
That moving alot of users from Exchange 2003 to 2007 can actually fill up your 30GB log drive for one of the Storage Groups Databases which of course causes it to unmount. Here's to SAN based storage, Diskpart and the wonderful Extend command
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