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• Advice needed: warm backup solution for SQL Server 2008 Express?

  - by Mikey Cee

  What are my options for achieving a warm backup server for a SQL Server Express instance running a single database? Sitting beside my production SQL Server 2008 Express box I have a second physical box currently doing nothing. I want to use this second box as a warm backup server by somehow replicating my production database in near real time (a little bit of data loss is acceptable). The database is very small and resources are utilized very lightly. In the case that the production server dies, I would manually reconfigure my application to point to the backup server instead. Although Express doesn't support log shipping natively, I am thinking that I could manually script a poor man's version of it, where I use batch files to take the logs and copy them across the network and apply them to the second server at 5 minute intervals. Does anyone have any advice on whether this is technically achievable, or if there is a better way to do what I am trying to do? Note that I want to avoid having to pay for the full version of SQL Server and configure mirroring as I think it is an overkill for this application. I understand that other DB platforms may present suitable options (eg. a MySQL Cluster), but for the purposes of this discussion, let's assume we have to stick to SQL Server.

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• subdomains to different VMs on one IP address

  - by efbenson

  I have a setup at home with an ESXi server Freenas server and several win7 clients. I have a domain refactoringme.com I set the @ and WWW domain record to my (current) IP address. I then forwarded port 80 to my local win2k3 server on my Linksys router and used host name matching to run the 5 test sites I have. That all works. Now I want to use the turnkey machines and move to dedicated VM servers. One for a wiki one for SVN etc. So how do I get www.refactoringme.com to go to one internal IP address and wiki.refactoringme.com to different internal IP address, while they both use the same external IP address? I added the additional record for wiki to my domain and pointed it to @. I figured it had to be involving a real firewall. So I installed PFSense on a VM and set it on the DMZ on my Linksys. From this point I haven't had any luck. I thought that maybe it would be in the DNS Forwarder or maybe in the Rules sections but neither have worked. Am I doing it wrong or on the right track but am missing something. Thanks for all the help.

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• Why does Windows 7 always automatically change the input or keyboard language?

  - by B-Ball

  I am wondering why Windows 7 always automatically changes my input or keyboard language. I've a notebook with an integrated QWERTY keyboard English (United States). Traveling, I use that one but, additionally, I've my own as well as a much better keyboard at home which is a QWERTZ keyboard German (Germany). Thus, being at home, I'd like to use my QWERTZ keyboard. Unfortunately, Windows 7 does not play along at this one. Every time, I start up my notebook, it is usually set to English (United States) but that's not the problem. In case, I'd use my notebook QWERTY keyboard English (United States), that's fine. However, if I start up my notebook and I'd like to use my QWERTZ keyboard German (Germany), I usually press ALT + Left Shift in order to switch from English (United States) to German (Germany) and Windows 7 switches the input language but only for the program that is currently open. If my input language is set to German (Germany) and I, e.g., open NotePad, Windows 7 automatically switches my input language to English (United States). This is very annoying since I've to change the input or keyboard language to German (Germany) every time I open up a new program. Why doesn't Windows 7 stay with one input language if I changed it manually by pressing ALT + Left Shift? Why doesn't the manual change of the input or keyboard language apply for the whole Windows 7? Why does it only affect the currently opened program? Since I've two keyboards with two different layouts, I seriously need to have both of the keyboards languages installed. I tried both of the below settings in order to find a solution for my problem. Currently, I am using the first option, two input languages. First option: two input languages: Second option: two keyboard languages:

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• httpd.config Easy Apache WHM CentOS

  - by jessie

  First let me explain how I got to this situation. I run a Streaming Video Site. Videos are about 100-250MB in size at any given time there are 500 people on the site. So I guess that would make then static. Recently My site started getting really slow and the only way to fix it temporarily was to restart apache. Now there was no change in traffic that could have caused this. My site is not being attacked. My hosting company recomended to implement mpm_mod and suPHP. They did that by using Easy Apache in WHMS. Then everything was working fine but a little slow. I researched around and to my understanding that mpm will do that but be more table. I was told that installing FastCGI would speed things up just enough. Well that made everything worse. The site is slow and time's out. I used WHM and took off fastCGI but its still the same, it seems like everything i do as of now nothing changes. I even did a roll back on the htconfig file but that didn't work. I'm not sure how to fix this. and my hosting network guy wont be able to touch the problem until Tuesday. I have root access.

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• Backup data rate on Raspberry Pi maxing out at 5 Mb/s. Why?

  - by bastibe

  I set up my Raspberry Pi as a Time Machine, as documented here. At the moment, the Raspberry Pi is connected to my MacBook Pro using a direct Ethernet cable. Also, an external hard drive (laptop drive) is connected to the Raspberry Pi using the USB port. However, backups are pretty slow. Activity Monitor claims that the Network is transferring a very steady 5 Mb/s, where my Time Capsule is transferring up to 8 Mb/s with a lot of fluctuation. The Raspberry Pi self-reports (top) that its CPU is only half-used, with about equal parts afpd, usb-storage and jbd2/sda1-8. Thus, I think that the processing power of the Raspberry Pi does not seem to be the problem here. To me, this looks like there is some kind of bottleneck that maxes out at 5 Mb/s thus potentially having my backups run at less than their potential speed. To the best of my knowledge, this might be the afp-daemon, the usb-bus or the external hard drive. So, my question is, how could I identify the true culprit and what can I do about it?

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• Windows Bluescreen - atikmpag.sys

  - by Mochan

  Information Name: atikmpag.sys bluescreen (BSOD or BlueScreen of Death) Error code: 0x00000116 Appears when: Playing games, watching videos Can be reproduced: Yes Cause: Graphics Card is the main assumption System Specifications Before we begin - I will inform you of my specifications. OS: Windows 7 x64 Home Edition Model: Dell Inspiron 15R Special Edition (aka Inspiron 7520) (Add 2GB of RAM to the model linked) Hard Drive: 1TB CPU: Intel Quad-Core i7 Sandy Bridge (I think) Processor at 2.10GHz (I think it can be clocked to 3GHz?) RAM: 6GB (I think 1 x 4GB and 1 x 2GB) Display: 15.6" HD (1366x768) Graphics: AMD Radeon HD 7500M 2GB Details So now that you know some basics about my computer, I'll get to the problem. Being an Ubuntu user I hardly use Windows, but occasionally I do. Like to run Skyrim and other games incompatible with Linux and WINE. The new Sims 3 Seasons patch is also now not supported. When playing these two games and other ones, theoretically. I have also heard others saying that while watching HD movies and video series it also happens. While watching the bluescreen as it happens, I see it is the 'atikmpag.sys' error. I have not installed much and nothing significant. I think I have downloaded Skyrim, Firefox and The Sims 3. I haven't done much more... since Ubuntu is definitely the best in comparison! (No hate, just a joke :P). I can reproduce it easily (just by running a game for less than a minute). It is always there each time, but it's never at a specific time or anything. So far I have found that it may be caused by lack of power to the graphics card, or it may be damaged or fried. Since I've had the computer for a mere 4 months (and have had other problems with it also). I have contacted Dell but they are useless beyond belief. Anyone with any information, solutions or details are encouraged to share your knowledge, as it would be immensely appreciated.

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• SQL Server 2005 SP3 on Windows 7 - No Management Studio

  - by Mike Thomas

  I've been trying for a day and a half now to get SQL Server 2005, DEV edition, to work on Windows 7, 64 bit prof. I install from the disk, then run SP 3. I get a failure on the Client Components section of the Installation Progress along with this vague message - Product : Client Components Product Version (Previous): 1399 Product Version (Final) : Status : Failure Log File : C:\Program Files\Microsoft SQL Server\90\Setup Bootstrap\LOG\Hotfix\SQLTools9_Hotfix_KB955706_sqlrun_tools.msp.log Error Number : 1712 Error Description : MSP Error: 1712 One or more of the files required to restore your computer to its previous state could not be found. Restoration will not be possible. I've uninstalled all Visual Studio and tried to make this as clean as possible, and have read a lot of the blog posts, but am really at my wits end about this. I am not a DBA, but I use SQL Server all the time when coding and testing apps. Does anyone have any ideas as to where I can get this sorted out? I've been ati this for a long time and have never encountered an installation as bad as this one. Thanks Mike Thomas

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• How harmful is a hard disk spin cycle?

  - by Gilles

  It is conventional wisdom¹ that each time you spin a hard disk down and back up, you shave some time off its life expectancy. The topic has been discussed before: Is turning off hard disks harmful? What's the effect of standby (spindown) mode on modern hard drives? Common explanations for why spindowns and spinups are harmful are that they induce more stress on the mechanical parts than ordinary running, and that they cause heat variations that are harmful to the device mechanics. Is there any data showing quantitatively how bad a spin cycle is? That is, how much life expectancy does a spin cycle cost? Or, more practically, if I know that I'm not going to need a disk for X seconds, how large should X be to warrant spinning down? ¹ But conventional wisdom has been wrong before; for example, it is commonly held that hard disks should be kept as cool as possible, but the one published study on the topic shows that cooler drives actually fail more. This study is no help here since all the disks surveyed were powered on 24/7.

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• Why can't I see installed AIR applications in /Applications on Mac OS Lion?

  - by Damir Zekic

  Yesterday I did a clean install of Mac OS Lion, and installed bunch of apps, including HipChat Desktop Application (an Adobe AIR app). I used it for some time and eventually closed it. Today I wanted to start it again, but couldn't find it in Launchpad. I looked in /Applications folder, but I couldn't find it there either (I still don't have ~/Applications). I went back to HipChat website (from where I installed) and a Flash plugin allowed me to run the app immediately. It shows up in my Dock and if I "keep it" there, I can launch it again (it still doesn't appear in my /Applications dir). However, it asks me for confirmation about launching an app that has been downloaded from the Internet (every time I start it, it's annoying). I also see the app in Adobe AIR uninstaller. I then went to my old Snow Leopard installation and found HipChat in my /Applications folder there. Copied it to the Lion disk and it works. Now I have two HipChat entries in Adobe AIR uninstaller. I guess I solved the issue at hand, but I still don't understand where the original app is located and how I can access it and move it to Applications. I couldn't find it anywhere with both Finder search nor find command in terminal (I used $find / -name "HipChat*" -print). So, how does Adobe AIR store the installed applications (on OSX Lion) and is there any way to get them to show up in Launchpad?

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• Missing Data on VMWare Virtual Disk

  - by Lachlan McDonald

  Evening all, I've got a considerable problem I'm hoping to get some resolution on. I had two VMWare 6.5 virtual machines, one running Ubuntu 9.10 and the other Ubuntu 10.04. I used 9.10 as a testing server, so I could install a LAMP environment to prepare some code. Over the months I took a number of snapshots of this VM just in case something went wrong, and did a full copy of the entire VM a month ago. I created the 10.04 VM when Lucid Lynx launched so I could continue development on a fresh install. To get the files over, I simply added the 9.10 virtual disk into the 10.04 VM, grabbed some of the files I needed, and dismounted it. Unknown to me at the time, the changes to the 9.04 virtual disk meant that I could no longer boot it with the 9.10 VM. I'd always get the "The parent virtual disk has been modified since the child was created." error. I decided this was a good time to backup all the critical files, but now whenever I open the 9.04 disk to get the data it isn't in the same state as it was earlier. My question is; is it possible when I'm mounting the virtual disk that I'm not seeing the most recent snapshot, or in my blundering, have I lost the virtual disk. Cheers

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• Configuration for Router Behind Uverse 2Wire

  - by Nori

  I have a 2Wire Uverse router(RG). I'm not particularly fond of it and want to use it as a modem only. I have a Linksys router with Tomato firmware on it and want that to be configured as the router. Most of the "guides" I've seen in my searches has been to enable DMZ Plus mode, but I don't see a way to make that work while my router has a static IP address. I played with it for quite some time yesterday and didn't see a way to get it to work. Then I ran across a setting in broadband for configuring another network. I played with that for a little bit but ran out of time and couldn't get it to work. So my question is for anyone out there who has Uverse and successfully setup a Tomato based firmware router behind the RG. How did you get it configured? I'm sure if I continued playing with it I could get it to work, but if someone out there already has it working then that would make my life easier. Thoughts? Thanks.

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• Installation of gearmand fails on libevent dependency

  - by PeeHaa

  I've installed the PostgreSQL yum repo and have PostgreSQL running for some time now, but now when I try to install gearmand I get the following errors: Transaction Check Error: file /usr/bin/event_rpcgen.py from install of compat-libevent14-1.4.13-1.rhel6.x86_64 conflicts with file from package libevent-devel-2.0.12-1.rhel6.x86_64 file /usr/lib64/libevent_core.a from install of compat-libevent14-1.4.13-1.rhel6.x86_64 conflicts with file from package libevent-devel-2.0.12-1.rhel6.x86_64 file /usr/lib64/libevent_core.so from install of compat-libevent14-1.4.13-1.rhel6.x86_64 conflicts with file from package libevent-devel-2.0.12-1.rhel6.x86_64 file /usr/lib64/libevent_extra.a from install of compat-libevent14-1.4.13-1.rhel6.x86_64 conflicts with file from package libevent-devel-2.0.12-1.rhel6.x86_64 file /usr/lib64/libevent_extra.so from install of compat-libevent14-1.4.13-1.rhel6.x86_64 conflicts with file from package libevent-devel-2.0.12-1.rhel6.x86_64 This is because the libevent is coming from the postgresql repository, so I thought I just disable the postgresql repository and try again: yum --disablerepo=pgdg91 install gearmand Error: Package: gearmand-0.14-3.el6.2.x86_64 (epel) Requires: libevent-1.4.so.2()(64bit) Available: libevent-1.4.13-1.el6.x86_64 (base) libevent-1.4.so.2()(64bit) Installed: libevent-2.0.12-1.rhel6.x86_64 (@pgdg91) Not found Is there a way to keep the libevent version used by postgresql and at the same time install gearmand (with the correct libevent version)?

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• High latency issue for web service call from amazon aws ec2 to local server

  - by SibzTer

  We have a legacy web application that is running in our data center on premises located in Houston. We have a developed a new .net 4 based web application in order to provide new features to customers. The new web application is hosted in amazon aws ec2 environment (N. Virginia region us-east-1b zone). In order to get seamlessly integrate with the legacy application the new web application makes web service calls to retrieve data. We are seeing an unusually high latency time in the order of 5+ seconds for these web service calls. The exact same web service call returns in less than a second on our local PCs (which makes sense given physical proximity to the actual server). The weird part is that we have developers in California who also have the same milliseconds response time. We are testing the web service response using third party tools such as SoapUI, Google Chrome extensions such as Advanced REST Client, Postman REST Client, etc. As if this wasnt weird enough, we have noticed the same low latency from certain other ec2 instances while testing which are in the same region and availability zone as well. If we experienced the high latency consistently from all the ec2 instances I could understand. But there is something else going on. Comparing the various stats and results between the low latency and high latency ec2 servers do not show any significant differences: ping (constant 40ms), tracert, winmtr, etc. We have instances that are in the VPC as well. So I tried both the public and private IP address of the web service host server and that didnt make a difference either for the above results. We need to resolve this latency issue as this is causing the resulting web pages to load very slowly (almost 15+ seconds which is simply unacceptable). The ec2 instances have Windows Server Datacenter 64 bit. Let me know if there is any other infor I can provide to help diagnose this.

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• Is it possible to have a wireless in-house NAS with wireless data transfer rates of equivalent to SATA speeds?

  - by techaddict

  Basically I would like to know, if it is possible to set up an NAS in my house to be accessed wirelessly, that can reach equivalent real-life data transfer speeds to USB 3.0 or an internal SATA hard drive. I have been wanting to do this for some time ( a couple of years now). Basically, this is what I want to do: Plug in a number of hard drives in an array, somewhere in my house, to be left plugged in and never have to be monitored. Ideally several terabytes. Whenever I am home, to have my computer and laptop configured to automatically find the NAS, as easy as plugging in an external hard drive - except completely wirelessly. Data transfer needs to be as seamless and quick as having added another internal hard drive in my laptop. Moreover, data should be able to accessed without having to copy it over - I should be able to wirelessly access the NAS and browse files, and open files directly from the NAS. For example, say I wanted to open a video - I should be able to play the video that is located on the NAS, directly from the NAS, completely wirelessly. If I wanted to open a .pdf file, I should be able to open it and read it directly from the NAS, as if it were located on my physical internal hard drive. Cost is important as well. Please tell me what equipment I need for this to be possible. I know you geniuses out there who can tell me if this is possible.

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• System32 files can be deleted in Windows 2008 but not in Windows 2003 [closed]

  - by Harvey Kwok

  I have been using Windows 2003 for a long time. There is a wonderful feature. I don't know the name of it but the feature is like this. You can rename or delete some important files inside C:\windows\system32. e.g. kerberos.dll. After a while, the deleted files will be automatically recovered. I think this is because those files are criticl enough that Windows cannot survive without them. However, in Windows 2008, this feature is gone. Instead, all the files in System32 are owned by TrustedInstaller. However, as a administrator, I can still take the ownserhip of the files and then delete them. Windwos 2008 won't recover the deleted files and hence the system is screwed next time it's reboot. So, I wonder why Windows 2008 dropping that wonderful feature. Was that auto-recovery feature also suffer from some issues? Does Windows 2008 have some other features that can prevent this type of disaster from happening?

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• Setup a new domain controller over a temporary VPN, but now Windows delays startup?

  - by Kris Anderson

  I'm migrating servers from colo locations to Amazon's VPC EC2 instances. If anyone hasn't worked with Amazon VPC before, VPN is a pain in the arse! Anyways, I setup a new server that acts as the domain controller for our Amazon VPC. In order to migrate all the user accounts from our existing domain controllers I manually connected to our colo VPN using my user account on the new Amazon EC2 machine. I was able to join the domain and the new Amazon server became another domain controller on our network. So far so good. The problem I'm having is that when booting the EC2 domain controller (which is no longer connected to the VPN so it can't communicate with the existing controllers), it takes a good 6-8 minuted before I can remote into the server (instead of the 1-2 minutes it should take). Also, during this time most of the services we also run (like IIS) also give 404 errors until the 6-8 minutes have passed. It's almost like the domain controller is attempting to reach the other domain controllers first and after 6-8 minutes it falls back to the one located on the local machine? I don't think that's what's happening though, because Server 2008 R2 doesn't have primary and backup domain controllers. They're all equal as far as Windows is concerned. For my network adapter I have only one DNS listed, 127.0.0.1, so it should be looking up the local domain controller and not the other domain controllers it connected to over VPN when VPN was enabled. In the server logs I'm seeing these warnings pop up during a reboot: The winlogon notification subscriber is taking long time to handle the notification event (CreateSession). The winlogon notification subscriber took 409 second(s) to handle the notification event (CreateSession). Any ideas on what's happening here? I would try removing the existing domain controllers from the new Amazon EC2 machine, but I still need to connect over VPN a few times to migrate some data between the servers, and I don't want that change being reflected back to the other domain controllers in our colo locations.

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• Excel file growing huge (>150 MB)

  - by Josh

  There is one particular Excel file that is used by a number of employees at my company. It is edited from both Excel 2003 and 2007, with the "Sharing" feature turned on to allow multiple writers at once. The file has a decent amount of data on several sheets with some basic formatting, and used to be about 6MB, which seems reasonable for its content. But after a few weeks of editing, the file grew to 10, then 20 MB, and eventually skyrocketed to more than 150 MB, even though it still has about the same amount of data as before. It now takes 5-10 minutes to open it, and that much time again to save it. The first time this happened, I copied the content of each sheet into a new, blank workbook, and saved the new workbook; this brought it back down to about 6MB. Now, it has blown up again. The workbook uses the "Data Validation" feature to limit the values in certain columns to the contents of a few named ranges. Copying all the data into a new workbook means re-setting up all the data validation, which is a pain and not something that we want to do every month. As a troubleshooting step, I tried saving the file in "XML Spreadsheet 2003" format, hoping to get some insight into what was being stored. Sure enough, the file was almost a gig, and almost all of the 10 million lines look like this: <NamedCell ss:Name="Z_21D5114F_E50C_46AC_AA4F_C3FF540C717F_.wvu.FilterData"/> <NamedCell ss:Name="Z_1EE2BA5E_3011_4F9A_8ACD_E58835250FC4_.wvu.FilterData"/> <NamedCell ss:Name="Z_1E3BDCEA_6A72_4ECC_BF4F_7B03CC66181E_.wvu.FilterData"/> I've seen a few VBScripts online to manage and enumerate named cells that are hidden in Excel's built-in interface, though I wonder how they'd handle my 10 million named cells. What I really need, though, is an understanding of why this keeps happening. What actions in excel could be causing this?

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• Macbook Pro won't boot from DVD with SSD

  - by Adam Carr

  Here's the timeline of events. Had a running MBP 17 Early 2011 Thunderbolt with OWC Mercury Extreme Pro SSD 115GB drive. Installed Windows 7 via bootcamp. I have done this multiple times before and every time I need to format the bootcamp partition before installing. I think this time I actually deleted the partition and then selected the freespace to install. This worked fine for the most part but I wasn't able to boot the boot camp partition using vmware fusion. I gave up and used the boot camp assistant to revert back to one mac partition. I was getting some odd behavior so I rebooted the machine. It then came up with a message saying no bootable partiton. This made me think (and still does) that the windows install using the free space versus the boot camp partition caused the windows MBR boot loader to get installed incorrectly and mucked up the OS X installation. Ok, fine, I can just reinstall. I can't seem to boot from the original MBP installation DVD. I hold down c on boot but I never get past the all grey screen. I hear the DVD drive spin up but it eventually stops. I put the original HD back in it and everything works fine but when I put the SSD in, I can't boot from the DVD drive. I have already set up an RMA with OWC to send back the drive but considering the order of events, I feel as though it isn't a hardware issue but can't seem to figure out how to fix it. I can always send it back in but figured I would check and see if anyone could offer some guideance/assistence before doing so.

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• Active directory Kerberos OSX problems

  - by Temotodochi

  I'll try to keep this short, but informative. I'm currently unable to bind OSX lion (10.7.4) machines to our AD. OSX kerberos (heimdal) is unable to locate the KDC service. However i can bind linux & windows machines to the AD without any problems in the same network AD controls the domain DNS and all the relevant _kerberos._tcp.x.domain.com and _kpasswd SRV DNS records are there and resolve fine when tried from OSX machines. Defined ports are open for service and manually accessible from OSX. When i try kinit in the OSX, i can get the first auth through (wrong passwords fail instantly), but when supplied with correct password, kinit fails after some waiting with "unable to reach KDC". All machines run NTP and have correct time. During testing, network is not firewalled between the machines Linux and windows machines have no problems whatsoever I have tried with and without /etc/krb5.conf - OSX by default does not need it in the krb5.conf i used a working config from one of our linux machines. dsconfigad fails with simple "connection failed to the directory server" I'm a bit baffled with this. OSX is like the KDC is nowhere to be found and at the same time my test machines with windows 7 and some linux (centos 6 & debian 6) machines have no problems whatsoever. Same network, same configurations. I'm missing some vital piece of configuration somewhere, and i can't find out what it is.

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• How harmful is a hard disk spin cycle?

  - by Gilles

  It is conventional wisdom¹ that each time you spin a hard disk down and back up, you shave some time off its life expectancy. The topic has been discussed before: Is turning off hard disks harmful? What's the effect of standby (spindown) mode on modern hard drives? Common explanations for why spindowns and spinups are harmful are that they induce more stress on the mechanical parts than ordinary running, and that they cause heat variations that are harmful to the device mechanics. Is there any data showing quantitatively how bad a spin cycle is? That is, how much life expectancy does a spin cycle cost? Or, more practically, if I know that I'm not going to need a disk for X seconds, how large should X be to warrant spinning down? ¹ But conventional wisdom has been wrong before; for example, it is commonly held that hard disks should be kept as cool as possible, but the one published study on the topic shows that cooler drives actually fail more. This study is no help here since all the disks surveyed were powered on 24/7.

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• Is there any limit to AIX 5.3 pipe size ?

  - by snowflake

  Hello, I'm in trouble while performing cat/tail/head operation on large files on Aix 5.3. When asking for a cat of several 1Go file redirected to another one: cat file1 file2 file3 > outputfile The outputfile is limited to 2Go (cat: output error and result file is 2147483647 bytes) Filesystem is jfs2. I successfully uploaded through ftp 10Go files on the filesystem without problem. I found nothing relevant in etc/security/limits: default: fsize = -1 core = 2097151 cpu = -1 data = 262144 rss = 65536 stack = 65536 nofiles = 20000 ulimit -a core file size (blocks) unlimited data seg size (kbytes) 245759 file size (blocks) unlimited max memory size (kbytes) unlimited open files 2000 pipe size (512 bytes) 64 stack size (kbytes) 32768 cpu time (seconds) unlimited max user processes 2048 virtual memory (kbytes) 278527 The problem does not occur on another AIX 5.3 server, I'm just looking for a different configuration that might be the source of the problem. /etc/security/limits on the server without the problem: default: fsize = -1 core = 2097151 cpu = -1 data = 262144 rss = 65536 stack = 65536 nofiles = 20000 ulimit -a on the server without the problem: core file size (blocks, -c) 1048575 data seg size (kbytes, -d) 131072 file size (blocks, -f) unlimited max memory size (kbytes, -m) 32768 open files (-n) 20000 pipe size (512 bytes, -p) 64 stack size (kbytes, -s) 32768 cpu time (seconds, -t) unlimited max user processes (-u) 262144 virtual memory (kbytes, -v) unlimited

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• Tomcat deployment overwrites context.xml

  - by Kristoffer

  Hi, I'm pretty new to Tomcat in general, so please point out if got anything wrong. My question is regarding updates to already deployed apps, using the Tomcat manager. But first thing first. I'm using the META-INF/Context.xml for storing connection info for the database connections, so this is unique to every server the application is deployed to. I'm not sure if this is optimal but it's the only way I know. So, when updating the application, it's important that this file doesn't get modified, because I don't want to have to go in and remake all changes every time I update my app. For updating, I'm using the Tomcat Manager, and I've tried different approaches but everything seems to build on the process of undeploy, then deploy the new version. This way, the Context.xml gets removed/replaced by an empty Context.xml file. So my question is basically, how do I update a running webapp, and at the same time having the Context.xml left untouched? Btw, I'm running Tomcat 6.0.24.

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• Failed to connect from slave to master with error "error connecting to master (1045)"

  - by Victor Lin

  I try to setup replication from slave to the master. CHANGE MASTER TO MASTER_HOST = 'master', MASTER_PORT = 3306, MASTER_USER = 'repl', MASTER_PASSWORD = 'xxx'; And I did grant privileges to the user on master. I can connect with mysql command from slave machine to the master mysql -h master -u repl -p mysql> show grants; GRANT RELOAD, SUPER, REPLICATION SLAVE, CREATE USER ON *.* TO 'repl'@'xxx' IDENTIFIED BY PASSWORD 'xxx' mysql> select 1; +---+ | 1 | +---+ | 1 | +---+ 1 row in set (0.04 sec) As you can see, privileges are correct, connection works fine, but however, the connection for replication to master always failed. mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Connecting to master Master_Host: master Master_User: repl Master_Port: 3306 Connect_Retry: 60 Master_Log_File: Read_Master_Log_Pos: 4 Relay_Log_File: slave-replay-bin.000002 Relay_Log_Pos: 4 Relay_Master_Log_File: Slave_IO_Running: Connecting Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 0 Relay_Log_Space: 107 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: NULL Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 1045 Last_IO_Error: error connecting to master 'repl@master:3306' - retry-time: 60 retries: 86400 Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 0 1 row in set (0.00 sec) Is this caused by different version of MySQL server? The version of master is 5.0.77, and the slave is 5.5.13. But all articles I could find tell me that it's okay to replicate from a newer slave to old master. How to solve this problem? -- Update -- I even try to upgrade the old MySQL, but still, the problem is not solved. mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Connecting to master Master_Host: master Master_User: repl Master_Port: 3306 Connect_Retry: 60 Master_Log_File: master-bin.000007 Read_Master_Log_Pos: 107 Relay_Log_File: slave-replay-bin.000001 Relay_Log_Pos: 4 Relay_Master_Log_File: master-bin.000007 Slave_IO_Running: Connecting Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 107 Relay_Log_Space: 107 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: NULL Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 1045 Last_IO_Error: error connecting to master 'repl@master' - retry-time: 60 retries: 86400 Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 0 1 row in set (0.00 sec)

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• Set scheduled task last result to 0x0 manually

  - by Rogier

  Every night a task runs that checks if any scheduled task has a Last Result is not equal to 0x0. If a scheduled tasks has an error like 0x1, then automatically an e-mail is sent to me. As some tasks are running only weekly, and sometimes an error occurs which results in not equal to 0x0, every night an e-mail is sent with the error message, as the Last Result column still shows the last result of 0x1. But I would like to set the Last Result column to 0x0 manually if I solved a problem, so I won't get every night an e-mail with the error message. So is it possible to set the scheduled tasks Last Result to 0x0 manually (or by a script)? @harrymc. See located script underneath that is sending the e-mail. I can easily add a criteria to ignore result 0x1 (or another code), however this is not the solution as most of the times this result is a real error and has to be e-mailed. set [email protected] set SMTPServer=SMTPserver set PathToScript=c:\scripts set [email protected] for /F "delims=" %%a in ('schtasks /query /v /fo:list ^| findstr /i "Taskname Result"') do call :Sub %%a goto :eof :Sub set Line=%* set BOL=%Line:~0,4% set MOL=%Line:~38% if /i %BOL%==Task ( set name=%MOL% goto :eof ) set result=%MOL% echo Task Name=%name%, Task Result=%result% if not %result%==0 ( echo Task %name% failed with result %result% > %PathToScript%\taskcheckerlog.txt bmail %PathToScript%\taskcheckerlog.txt -t %YourEmailAddress% -a "Warning! Failed %name% Scheduled Task on %computername%" -s %SMTPServer% -f %FromAddress% -b "Task %name% failed with result %result% on CorVu scheduler %computername%" )

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• Windows 7 machine, can't connect remotely until after ping

  - by rjohnston

  I have a Windows 7 (Home Premium) machine that doubles as a media centre and subversion server. There's a couple of problems with this setup, when connecting to the server from an XP (SP3) machine: Firstly, the machine won't respond to it's machine name until after it's IP address has been pinged. Here's an example: Microsoft Windows XP [Version 5.1.2600] (C) Copyright 1985-2001 Microsoft Corp. C:\Documents and Settings\Rob>ping damascus Ping request could not find host damascus. Please check the name and try again. C:\Documents and Settings\Rob>ping 192.168.1.17 Pinging 192.168.1.17 with 32 bytes of data: Reply from 192.168.1.17: bytes=32 time=2ms TTL=128 ... Ping statistics for 192.168.1.17: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 1ms, Maximum = 2ms, Average = 1ms C:\Documents and Settings\Rob>ping damascus Pinging damascus [192.168.1.17] with 32 bytes of data: Reply from 192.168.1.17: bytes=32 time<1ms TTL=128 .... Ping statistics for 192.168.1.17: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 1ms, Average = 0ms C:\Documents and Settings\Rob> Likewise, subversion commands with either the machine name or IP address will fail until the machine's IP address is pinged. Occasionally, the machine won't respond to pings on it's IP address, it'll just come back with "Request timed out". The svn server is VisualSVN, if that helps... Any ideas?

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