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• Battery backed write cache behavior upon disk change

  - by Halfgaar

  We use 3ware Inc 9650SE SATA-II RAID PCIe RAID controllers with battery backed write cache. Our spare hardware has the same controller. I was wondering; are these controllers smart enough not to sync the cache when the disks have been changed? For example, if I deploy one of those spare machines by putting in the disks of another machine and that spare machine still has pending writes, will it be smart enough not to perform those writes on the replaced array? Edit: my scenario is not really made clear, so let me give an example: server1 goes down because of power supply failure. I put the disks in server2 and start. I repair server1 I put the disks back from server2 in server1 (it's not relevant right now that in reality I would probably keep server2 running). If server1 doesn't have safeguards, it will write to the array, thinking it's simply powering up again, corrupting it.

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• How can I convert videos for Sony Xperia U on my Linux box?

  - by Konstantin

  I would like to send a few videos for my girlfriend, but I would ensure they are playable on her mobile phone. I want to carry out the encoding tasks on my Arch Linux box, because my PC is a low end. I can use only ffmpeg or mencoder or other CLI tool. She can play youtube videos but I don't want to upload such videos to youtube. Are there any presets for specific mobile phones? And when she simply clicks a video direct link will it play directly on the cellphone or should I embed it in a html5 / flash player, like on youtube?

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• Powershell, Task Scheduler or loop and sleep

  - by Paddy Carroll

  I have a job that needs to go off every minute or so, it loads a DLL i have written in C# that retrieves state for an SQL Server Mirror (Primary, Mirror and witness) for a number of databases; it allows us to poke DNS to show where the primary instances are. Please don't mention Clustering - We're not doing that. I can't be arsed to write a service, there simply isn't enough time do I Task Scheduler - every minute: Invoke a powershell script that loads the DLL does the business Task scheduler - At Startup : Invoke a similer powershell script that loads the DLL once but then loops and sleeps, refreshing the Object that the DLL exposes. Pros and cons?

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• powershell task scheduler or loop and sleep

  - by Paddy Carroll

  I have a job that needs to go off every minute or so, it loads a DLL written in C# that retrieves state for an SQL Server Mirror (Primary, Mirror and witness) for a number of databases; it allows us to poke DNS to show where the primary instances are. Please don't mention Clustering - We're not doing that. I can't be arsed to write a service, there simply isn't enough time do I Task Scheduler - every minute: Invoke a powershell script that loads the DLL does the business Task scheduler - At Startup : Invoke a similer powershell script that loads the DLL once but then loops and sleeps, refreshing the Object that the DLL exposes. Pros and cons?

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• Migrating an Active Directory domain controller to AWS

  - by Xavier Hutchinson

  I am required to migrate a Active Directory server into AWS with a couple other servers (SQL and IIS) to create a dev and test environment for our network / development. My plan at this time is to simply rebuild the Active Directory server in AWS from scratch - which is quite time consuming indeed! I was wondering if anyone had a recommendation as to a better and more efficient approach of migrating a copy of a physical Active Directory server to the cloud? The server is Windows Server 2012. Thank you!

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• Remove iTunes on Mac OS X permanently: no Software Update

  - by ShreevatsaR

  Somewhat predictably, removing iTunes on Mac OS X is a long arduous process, described at http://support.apple.com/kb/ht1224 — which I have followed. As far as I can tell, I have purged every trace of the accursed iTunes from my system. Yet Software Update repeatedly prompts me with updates for iTunes, which I don't want anything to do with, despite my saying "Not now" each time. How can I convince Software Update to leave me alone, and never bother me with mention of iTunes again? I'm on Mac OS X 10.6.4 Build 10F569, and the update being offerred is iTunes 9.2.1. (Note: Not a duplicate of OS X: why Software Update suggests to update removed application?, whose accepted answer is simply to follow the instructions I mentioned above.)

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• Installing Linux from External Card Reader

  - by Subhamoy Sengupta

  I have this problem. I was experimenting if I could use a memory card (SDHC) as an USB drive for all intents and purposes, and when I put the card in an USB card reader, I can use it just like regular USB stick and it also shows up in the BBS popup menu as an USB stick. When I tried to create an installation media out of it like this: sudo dd if=/path/to/image of=/dev/sdb And tried to boot from it, simply nothing happened. Cursor blinked a couple times, and jumped to the GRUB of my pre-existing GNU/Linux installation. What am I missing here? Is this not doable? I tried this with Xubuntu 12.04 and ArchLinux, by the way. I have also tried UNetBootIn instead of dd. Nothing happened differently.

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• How can I tag sequences inside videos?

  - by Antoine

  For example, let's say I find a sequence in a WWDC session (Apple videos) that explains a technical point very well. I would like to be able to store the exact range in the video, tag it with keywords, and manage all that information. And when I want to share this information, I could simply export to a plain English sentence: "Have a look at the video named …". It would be great to be able to launch a video player for local videos and go straight to the beginning of the sequence.

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• Can I ping via an arbitrary interface of a DD-WRT system?

  - by bytebuster

  There's a Linksys WRT54GL router with DD-WRT firmware (v23SP2). The network has a simple dual-WAN configuration (standby mode, switching by a script): ~ # ip route 192.168.3.0/24 dev br0 proto kernel scope link src 192.168.3.1 192.168.2.0/24 dev vlan2 proto kernel scope link src 192.168.2.2 192.168.1.0/24 dev vlan1 proto kernel scope link src 192.168.1.67 127.0.0.0/8 dev lo scope link default via 192.168.2.1 dev vlan2 I'm trying to ping a certain server arbitrary via vlan1 or vlan2. What I tried, as suggested here: ping -I vlan2 <address> ping 192.168.2.1 <address> In both cases ping simply exits with no error messages. Also, ping ignores many other parameters, again, by exiting silently. I failed to find any references that DD-WRT has a limited version of ping whatsoever. I also don't think it can be a permissions issue as mentioned here since the only user with DD-WRT is root. What's wrong?

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• Music tagging software more consistent than Tag&Rename?

  - by Billy ONeal

  A few years ago I spent an insane amount of time using the excellent Tag&Rename program. However, I find that for random, inexplicable reasons, some music tools simply disregard my tags, drop or destroy the album art, or have strange handling around some characters. For example, "AC/DC" is poorly handled by most music players when I use Tag&Rename to write the tags. And if I write the tag in iTunes, Winamp seems to not like it, vice versa, and neither of those work with Amarok. Is there a piece of software that works like Tag&Rename but is more compatible, or is there a way to ensure Tag&Rename writes more compatible tags?

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• Scanned JPEGs are large and slow to load - can they be optimized losslessly?

  - by Alistair Knock

  I have hundreds of JPEG photographs which were scanned about 5 years ago from negative using a Konica Minolta DiMAGE Scan Dual IV. The dimensions are ~4500x3000, and the filesize is around 12Mb, compared to shots from a DSLR with dimensions of 3000x2300 and filesize of 2-4Mb (actually, these are the output from a RAW convertor). The filesize is obviously quite a big difference, but the issue that's bothering me is that the (perceived) loading time is at least 10 times slower. Is this size/speed discrepancy likely to be because the scanner software saved the JPEGs inefficiently / using an old compression format, or is it simply that the scanned negatives contain much more "detail" (in the form of grain/noise) than the digital images? If the former, is there a way to losslessly optimize them? I've tried re-exporting the scanned files to full size JPEG from my RAW software but the filesize is pretty much the same. Both files will have been saved at 100 quality.

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• AutoHotkey media button for the NextSong button on Pandora

  - by Christian

  I tried doing the same thing that had been advised to do on the Play/pause pandora.com with a media key answer page. I simply replaced the XXX with 119 after running GetMediaKey - instead of 122 (it was same for me), which worked just fine for its play/pause purpose. I also replaced the YY with 11 since it was the appropriate (and next) tab. It does put the small, orange, dotted square around the next song button, but instead of going to the next song, it just acts like play/pause. Is there another modification required? Using Google Chrome in Windows 7 on an Alienware m14x r2.

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• Manually accessing GMail via IMAP

  - by Jeff Mc

  I'm trying to connect to gmail imap, but I am unable to execute any commands after login. I'm running openssl s_client -connect imap.gmail.com:993 to connect then, * OK Gimap ready for requests from 128.146.221.118 42if6514983iwn.40 . CAPABILITY * CAPABILITY IMAP4rev1 UNSELECT IDLE NAMESPACE QUOTA XLIST CHILDREN XYZZY SASL-IR AUTH=XOAUTH . OK Thats all she wrote! 42if6514983iwn.40 . LOGIN {email removed} {password removed} * CAPABILITY IMAP4rev1 UNSELECT LITERAL+ IDLE NAMESPACE QUOTA ID XLIST CHILDREN X-GM-EXT-1 UIDPLUS COMPRESS=DEFLATE . OK {email removed} authenticated (Success) . CAPABILITY at which point it simply hangs with the connection open. I'm guessing gmail pushes you off to a node in a cluster after it authenticate me?

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• SQL Server 2000 need to prevent logons whilst performing a backup for a side by side migration

  - by pigeon

  I'm looking for a way to prevent logons from occurring in order to take a full backup of a Database to migrate from its current SQL Server 2000 instance to a new SQL 2005 instance. A friend of mine suggested running a script which would put the DB into a rollback state. Not being a DBA my DDL is very poor and running a script that I don't understand may not be the best idea. One option which might be easier is to simply detach and copy, to the new server. Any suggestions would be greatly appreciated.

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• Can a Double-Density Floppy drive be swapped out for a High-Density drive?

  - by Ben

  I'm trying to fix the floppy drive in my Roland MC-500. The floppy drive inside is a Matsushita DDF3-1 which doesn't seem to be in production anymore. The DDF3-2 is still available, however it is an HD drive. Does anyone know off the top of their heads if there is any issue with simply swapping the two drives? Could the power usage be different on the drives? Since the machine is expecting a 720k DD drive, are there any jumper settings to have the HD drive function as a DD drive?

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• Robustly disabling specific cron.{hourly,daily,weekly} script

  - by benizi

  On various systems that I administer, there are cron scripts that get run via the commonly-used /etc/cron.{hourly,daily,weekly} layout. What I want to know is whether there's any common 'disable this script' functionality. Obviously, simply deleting something out of a given directory will disable it, but I'm looking for a more permanent solution. Deleting /etc/cron.daily/slocate will work to disable the nightly updatedb on my home machine (where I never use slocate), but next time I upgrade the slocate package, I'm pretty sure it'll reappear. The two distributions I'm most interested in are Gentoo and OpenSUSE, but I'm hoping there's a widely-implemented mechanism. Both distros as I have them use vixie-cron (not sure it matters).

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• Why is Internet access and Wi-Fi always so terrible at large tech conferences?

  - by Joel Spolsky

  Every tech conference I've ever been to, and I've been to a lot, has had absolutely abysmal Wi-Fi and Internet access. Sometimes it's the DHCP server running out of addresses. Sometimes the backhaul is clearly inadequate. Sometimes there's one router for a ballroom with 3000 people. But it's always SOMETHING. It never works. What are some of the best practices for conference organizers? What questions should they ask the conference venue or ISP to know, in advance, if the Wi-Fi is going to work? What are the most common causes of crappy Wi-Fi at conferences? Are they avoidable, or is Wi-Fi simply not an adequate technology for large conferences?

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• NIC bonding with two uplinks

  - by Karolis T.

  Is bonding the preferred way of implementing ISP redundancy? In the texts I've seen, bond device has a netmask, gateway of it's own. How can this be obtained if there are two different gateways from two uplinks, which one to choose? Do I need any special routing rules to go with it or does simply configuring separate interfaces (using Debian, /etc/network/interfaces), i.e eth1, eth2 for their corresponding uplinks and bonding them to bond0 handle routing automatically? If I want to NAT client machines, do they use bond device's IP as a gateway? Does the bond0 device is the device that goes into iptables nat rules? Thanks

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• Automatic storing package before installing it on .deb based system?

  - by macias

  The reason I am asking this question is I am concerned about simple rollback (I already read how to find out what packages were installed). So I would like to set global (per entire system) option, that forces system to store each package before installing/updating it. With such workflow, I could update whatever I want, and if for example the newest version of Dolphin would be worse than previous one I could simply go to directory with stored packages and install previous version instead (the previous version is either base version -- on ISO -- or version from previous update). Is there such feature as global option to automatically store each package before install? It have to be guaranteed that no package is updated on-fly, i.e. without being stored before. I am learning LMDE, but answer for any .deb based system would be fine -- Ubuntu, Debian, you name it.

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• SQL Server Job system silently fails

  - by Brett Veenstra

  We run numerous scheduled jobs using MS SQL 2005 job scheduler. Over the past few weeks, we've been witnessing that a running job will simply STOP and will not record any history in the Log File Viewer. What appears to be happening is that the server will start a job and record these steps into msdb. At a random step during a job, the server will stop running the job and it records no error. This silent failure prevents a "Step 0" record from being created and we won't see anything in the Log File Viewer. Anyone else experience this?

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• How can I set Out-Of-Office in a shared mailbox

  - by balexandre

  I would want to set the out-of-office automatic response to all emails that arrive to our [email protected]. currently in the Outlook, I only have one mailbox (the user mailbox) but it has 2 shared mailboxes setup. I have tried to create a Rule that says: for all email received on account [email protected] forward to user [email protected] and make that user to set up the Out-of-office message, but it simply did not work, and I suspect that the rules only apply to the user account and not the shared account... How can I set Out-Of-Office in this shared mailbox ?

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• Cheapest Embedded System with Wireless Connectivity?

  - by geeko

  Problem: I'm trying to capture some information coming from keyboard, mouse and barcode reader connected to some PC via PS/2, USB and/or RS-232, before information get to PC and send it over the Internet to some central server. I'm thinking to do so by using some kind of hardware interface (middleware, if you like) between PC and input devices. I thought this interface can be embedded PC, PDA or simply some mobile phone with wireless connectivity. PS/2 and RS-232 could be converted to USB using some USB convector/hub that connects to one of these interface systems. Then some special API programming take place to communicate between PC, input devices and wireless server, in the form of application running on the interface system. What's the cheapest solution that can achieve this? Or possibly any other solution?

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• How to fix poor rendering in Windows Movie Maker?

  - by Cyberherbalist

  I am using CamStudio to make some instructional videos about Visual Studio for our development team, and one of the videos needed some editing to remove audio and video mistakes and to add in a better ending. CamStudio outputs to .avi files, and they look pretty good, with the program source code being quite readable. However, after making the edits using WMM, it has rendered the results to a noticeable loss in quality. It has gone from from fairly sharp in focus and adequately readable to recognizable but somewhat blurred. It has also inflated the size of the new .avi file to three times its original size (before cropping half of the vido out!). And the .wmv I attempted to render was was certainly smaller but simply horrible-looking. The left image here is the original video, and the right image is WMM's rendering in .avi format: I have to be doing something wrong, but I know nothing about how to use WMM (my first use of it). I am using default settings to the best of my knowledge. Any suggestions welcomed!

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• What is AddType application/x-httpd-php-source

  - by egor

  I have the apache2.0, PHP5.2.4 and the directive in the httpd.conf: AddType application/x-httpd-php-source .php .php3 .php4 .php5 .php6 AddType directive is used to maps the given filename extensions onto the specified content type. This is the only meaning of this directive. But why does this method switch off PHP handler, that assigned .php extensions, and I can view source code of scripts in my browser? And another: AddType application/x-httpd-php5 .php Why does this method switch on PHP handler? This simply must send header "Content-Type: application/x-httpd-php5" to my browser and this must be only meaning of directive AddType from mod_mime. I'm confused. Thanks for your replies.

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• Make GRUB automatically boot Ubuntu

  - by Matt Robertson

  I am running a dual-boot with Ubuntu (10.10) and Windows 7. Recently I edited my /boot/grub/grub.cfg file to only show one version of Ubuntu (as opposed to several kernel versions) and Windows, simply by commenting out all other menu entries. My question is if I can edit GRUB to just boot a specific entry automatically. I tried removing all other menu entries, but GRUB still showed the menu with only one entry. I've also considered just setting the timeout to either 0 or 1 second, as this would basically achieve the same thing. What is the best way to do this?

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