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  • Best choice for off-site backup: dd vs tar

    - by plok
    I have two 1TB single-partition hard disks configured as RAID1, of which I would like to make an off-site backup on a third disk, which I am still to buy. The idea is to store the backup at a relative's house, considerably far away from my place, in the hope that all the information will be safe in the case of a global thermonuclear apocalypse. Of course, this backup would be well encrypted. What I still have to decide is whether I am going to simply tar the entire partition or, instead, use dd to create an image of the disks. Is there any non-trivial difference between these two approaches that I could be overlooking? This off-site backup would be updated no more than two or three times a year, in the best of the cases, so performance should not be a factor to be pondered at all. What, and why, would you use if you were me? dd, tar, or a third option?

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  • How to generate a round-numbers graph in Excel?

    - by tcheregati
    folks! Now, I have an Excel file with measurements I made of some color patches (I work at a Press company), with a device called spectrophotometer. Here it is: https://docs.google.com/open?id=0B0i8fdSf2ihzRlFYNWd4anItenM Density and Hue are two characteristics of each color patch. The thing is: I'm looking at a non-linear increase between the 25 Color Density measurements I took, but I NEED to know exactly how the color's Hue changes as the color's Density increases. For that, I needed Excel to give me round numbers for the X axis (for example 0,70 to 1,50 in 0,05 increments). And for that, obviously, I needed Excel to calculate the probable Hue Values corresponding to those ghost/round/not-given values of Density (like a kind of advanced rule of three). So, can anyone help me on that? Thanks a lot!

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  • Trying to understand why VLANs need to be created on intermediate switches

    - by Jon Reeves
    I'm currently studying for the Cisco switching exam and having trouble understanding exactly how 802.1q tagging works. Given three daisy chained switches (A,B, and C) with trunk ports between them and VLAN 101 defined on both end switches (A and C), I'm not sure why the VLAN also needs to be defined on the middle one (B)? Note that I am not disputing that it does need to be configured, I'm just trying to understand why exactly. As I understand it, traffic from VLAN 101 on switch A will be tagged as it goes through the trunk to switch B. According to the documentation I have read, trunks will pass all VLANs by default, and the .1q tag is only removed when the frame leaves through an access port on the relevant VLAN. From this I would expect switch B to simply forward the tagged frame unchanged through the trunk to switch C. Can anyone shed some light on how switch B processes this frame and why it does not get forwarded through the other trunk ?

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  • Using VMWare Workstation, to convert a physical Win2008 into a templtae

    - by SndLt
    I'm new to VMware and despite having read the documentations, I'm having trouble. I'm using VMware workstation Stand-Alone package to turn a physical Win Server 2008 R2 into a usable VM appliance. The source and destination part is getting me here. It seems using keyword "localhost" doesn't cut all the way through. Does the shared folder have to be in my local drive for that matter? For ip, am I using the simple private IP that my nearest DHCP has given me? But what if I have more than one interfaces that have two or three different private ip addresses? Thanks.

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  • External hard drive doesn't appear in Computer

    - by Thomas Clayson
    I cannot work out why this is happening. I have an external hard drive (which is an old laptop hard drive with an IDE to USB adapter). Plugging it into my computer powers it up. It spins correctly and the lights on the adapter flash normally. Uninstalling from hardware manager and plugging it back in causes Windows to "install new software", and it says it has installed properly. In Disk Management it comes up in the bottom part as Disk 2 with the right size (~60 GB), but not in the top half. There are three empty drives in the top half. They don't have titles or drive letters. Right clicking them bring up slightly varying context menus, but all with the options disabled. Here is a picture of my Disk Management screen: How do I make this drive show up in My Computer? I need to format it and use it as an external hard drive.

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  • Does the retina MacBook Pro Australian charger duckhead have 3 prongs on it or 2?

    - by frenchglen
    I notice that with my Retina MacBook Pro (bought in UK), its charger uses all three prongs to power the laptop (like this, rather than this). Not surprised, it's a powerful machine. I'm going to Australia now and I want to use an aussie duckhead and make use of the innovative design. I have an existing one from an old iPod (and it used to work with fine with my Macbook Air when in australia), but it's only two prongs (like this). Is that enough to power my rMBP? Or will it damage/strain it and I need to find a 3 prong one (if it even exists - I haven't bought my MBP in Australia) like this? Thanks

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  • Which app has a notification sound with 3 descending notes?

    - by Eric
    Brand new Windows 7 box loaded with the usual dev tools -- VS2008, Firefox, Chatzilla, Thunderbird, emacs, Pidgin, Putty, iTunes, SharpReader. Every couple of minutes, I get an audio notification consisting of three rising notes, maybe a middle-C-G-F on a piano (I don't have a piano handy, and don't have time to use GarageBand to try to figure it out). Nothing in the notification bar is flashing when this happens. The sound isn't in any of the Windows Sound control panel applets. And it's not in C:\Windows\Media, so it's most likely coming from a non-Microsoft app. Any chance it's Pidgin when the status one of my contact's changes (which happens plenty frequently)? Oh, look at this --- Tools/Mute Sounds. Let's try that and see what happens... Is this familiar to anyone?

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  • Reducing latency for different geographic regions on Amazon Cloud

    - by Shoaibi
    I have got an application which has three components Application code : Amazon EC2 US-EAST-1 instance Application images, and other static data : Amazon S3 with CloudFront Application Database : Amazon RDS In short i need something like Cloud Front for EC2. In long, people using this application from a different region say middle east will have faster static content downloading due to Cloud Front but there would be a lot of latency in communicating to EC2 instance. I want to use a budget friendly way of enhancing this. Launching Amazon Instances in every region that offer is sure a choice, but isn't really cheap, so would try to avoid it unless its last resort. Also say if my clients also need to communicate to the RDS database directly, is there some kind of solution which gives that kind of functionality mentioned above, but for RDS?

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  • Need data on disk drive management by OS: getting base I/O unit size, "sync" option, Direct Memory A

    - by Richard T
    Hello All, I want to ensure I have done all I can to configure a system's disks for serious database use. The three areas I know of (any others?) to be concerned about are: I/O size: the database engine and disk's native size should either match, or the database's native I/O size should be a multiple of the disk's native I/O size. Disks that are capable of Direct Memory Access (eg. IDE) should be configured for it. When a disk says it has written data persistently, it must be so! No keeping it in cache and lying about it. I have been looking for information on how to ensure these are so for CENTOS and Ubuntu, but can't seem to find anything at all! I want to be able to check these things and change them if needed. Any and all input appreciated.

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  • Postfix multiple checks

    - by xBlue
    I want to achieve the following with Postfix: Run all emails through a black list Allow any clients sending to a list of domains Allow some clients sending to any domain This is what I have: (postfix is on 10.0.8.0 and some of the senders are 10.0.8.0 and 10.0.9.0) mynetworks_style = subnet smtpd_recipient_restrictions = check_recipient_access sqlite:/etc/postfix/access-bl.query, check_client_access hash:/etc/postfix/trusted_clients, check_recipie nt_access hash:/etc/postfix/local_domains, reject_unauth_destination, permit So, right now the black list works. File /etc/postfix/trusted_clients contains who can send anywhere (3), file /etc/postfix/local_domains contains where you can send (2). Those two are fine, they return properly. My problem is getting all three working together. Not sure if it's an ordering issue. Currently sending a test from 10.0.9.17 and I get Relay access denied. If I add: mynetworks = 10.0.8.0/24 10.0.9.0/24 then anyone can send anywhere, so #2 is not working. Postfix version is 2.10 on Ubuntu 14.04. Any ideas?

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  • Multiple Java Versions

    - by user327486
    There are few applications which use Java 1.6.2x , few 1.7.1X and other uses 1.7.4X versions. Since we decided to push all three applications to the user .How to make the applications to use its particular version. There are few web based apps and enterprise apps which requires only a specific set of java versions which is creating issues. Os : Win 7 IE - ver 8 Work around In Progress : Trying to apply a batch file for each app to set the require java version path , but its not the required solution. Do we have any generic way which automatically maps to its required java version , instead of running batch file for each application. Looking forward your valuable suggestions.

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  • Converting date format in formulas in Excel

    - by Casebash
    I have a column of dates in the following format ddd mmm dd hh m:s "EST" yyyy. In another cell in another sheet, I wish to have the dates in the format dd/m/y. How can I do this? I already tried the DATEVALUE function. Seeing as the positions are fixed, I started using the RIGHT and MID functions to extract components to put into the DATE function. Unfortunately, I don't know of a way of converting the three letter string to a month without writing a huge if block. UPDATE: I managed to convert the string using MONTH(1&THREE_LETTER_DATE). I am still curious if there is a better solution though

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  • Corporate Wiki Organization - Technical Documentation

    - by Dave Jarvis
    Corporations have documents describing various aspects of their technical systems, including: Custom Applications Custom Development Frameworks Third Party Applications Accounting Bug Tracking Network Management How To Guides User Manuals Software Tools Web Browsers Development IDEs Graphics GIMP xv Text Editing File Transfer ncFTP WinSCP Hardware Servers Web Database Exchange File Network Devices Printers If you had to use a Wiki to manage the documentation, what other items would you add to the list, and how would you organize it? (For example, would Software Tools make more sense under Third Party Applications?) A few constraints: The structure should not go beyond three levels deep. Avoid the word "and" in favour of two different categories. Keep the structure general: it should appy as broadly as possible. Target audience is primarily technical, but could be visible by anyone.

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  • Outlook 2007 - Monospace/preformatted quickstyle

    - by joelarson
    In Outlook 2003 I could set a block of text as preformatted, which was mighty handing for emailing code snippets. This prevented line wrapping, and specified that a monospace font be used in whatever email client recieved my email. Now in Outlook 2007, there are at least three problems: 'Plain Text' style (apparently the closest thing to 'preformatted' as a style) is buried beneath about five clicks, and adding it to the quick style gallery and saving the gallery seems to be forgotten (bug?) It uses some fancy Microsoft font 'Consolas' that is not on some of my coworkers machines that use thunderbird It does not appear that there is any way to get it flagged as a monospace font so that other email clients will display it properly. Does anybody know how to quickly set text to 'preformatted' as Outlook 2003, meaning A) use a monospace font B) flag it as monospace for other clients C) avoid hard line breaks?

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  • Cisco router for educational purposes

    - by user39214
    Hey all. I want to buy a Cisco router to use on my home network. I'm just hoping to get a unit that is not too old and is not a SOHO model. I want to run the latest Cisco OS just to learn how Cisco does things. I would use it to divide my network into two or three IP networks, firewalling, etc. I'm just asking for a model name/number. Thanks.

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  • Mac has become insanely slow : Processes SystemUIServer, UserEventAgent and loginwindow using a lot of memory

    - by SatheeshJM
    I have been using my Mac for for many months without any problem. But recently all of a sudden the Mac became insanely slow. I opened Activity Manager to see what was happening. For three processes SystemUIServer, UserEventAgent and loginwindow, the memory gradually increases and reaches upto 2 GB for each process. This completely hangs up my Mac. I tried the following : 1. Restart Mac 2. Restart Mac in safe mode 3. Manually kill the processes 4. Remove Date and Time from Menu bar(this was supposed to be the problem for the SysteUIServer process's memory according to many users) 5. Removed the externally connected keyboard and mouse(some had suggested this for UserEventAgent's memory) No luck with any of those. The moment I log in, the memory spikes up. Any idea what the hell is happening? Please help.

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  • MS Office 2007 std, on a 2008R2 RDS session - additional language and proofing tools question

    - by dyasny
    Hi all, I have a terminal server, with a bunch of users running MS Office 2007 std in. Some of them have recently been asking for better multilanguage support. Since I'm in a select agreement, I've gone into the Volume Licensing Service Center and downloaded the following three ISOs: Office Multilanguage Packs 2007 (DVD) Office Multilanguage Packs 2007 (CD) Office Multilanguage Pack 2007 Service Pack 1 But having mounted the ISOs in my RDS host, I still can't install anything they contain. I am quite probably doing something wrong, or maybe I need to be running Office pro version? please F1

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  • Replacing a W2K3 Domain Controller - what do I need to know?

    - by Marko Carter
    I have a network of around 70 machines, currently with two DCs both running Windows Server 2003 (DC0 & DC1). DC0 is a five year old Poweredge 1850 and has recently become increasingly flakey, and in the past fortnight has fallen over twice. I want to replace this machine, but I'm cautious as there is huge scope for this sort of thing to go wrong. The way I imagine doing this is building a new machine then doing a DCPROMO and running three domain controllers for a month or so until I'm happy that everything is working as it should be before retiring the old machine. Particular areas of concern are the replication of roles from the current controllers (GP settings for instance) and the ramifications of switching off the machine that has, up until now, been the 'primary'. If there are compelling reasons to use Server 2008 I'm willing to do so, however I don't know if this would cause problems with my exisiting 2003 machines. Any advice on best practice or previous experiences would be most welcome.

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  • Prevent IIS7 HTTPS from binding to all SSL IP addresses

    - by robpaveza
    I've had this interesting problem with IIS7. I have a number of HTTPS sites in IIS7. That hasn't been a problem, until I wanted to go and set up VisualSVN Server using an SSL certificate. The installer had trouble starting the service. When I looked in the event log, the error was that "the file is already in use by another process." I figured that the "file" was really a socket, and checked with netstat - even though IIS was only bound to three specific IP addresses (.160, .156, and .168) with port 443, it was consuming *:443. I could stop the World Wide Web Publishing Service, start VisualSVN, and then start IIS, but then none of my SSL servers would start. Any helpful hints about how I could make IIS not try to default-bind to *:443? Thanks!!

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  • Pressing an accent key (´ / ?) adds the character twice in most programs

    - by sh code
    This might seem as duplicate of Pressing key with accent character makes it enter twice but it is not: About three days ago, the issue started - I am using Slovak (Slovakia) keyboard, and the key for adding accents/diacritics (just left from backspace) acts strangely - it should "do nothing" upon pressing, and then when character key is pressed right after it, it should output that character with accent/diacritics. However, in most programs, pressing it once results in immediately outputting the accent itself twice (which under normal circumstances happens when you press the key twice). This issue doesn't happen in Visual Studio or any program I make in it, and Pidgin, it seems to happen everywhere else (firefox, notepad, MS OneNote, Windows Explorer itself). I am not aware of any software installations, driver changes or system updates between the time it worked properly and the time when it broke. What could be the problem and how do I solve it?

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  • Product Recommendation: Good job scheduler for windows servers?

    - by Bret Fisher
    Looking for a mostly-GUI tool that is low cost (less then $1k, but not required) and allows you to create scheduled tasks and jobs without writing vbscript, batch files, or powershell. Something simple that speaks SMB/CIFS, SMTP, LDAP, etc. for such things as "delete some files based on a list of folders from this text file" or "disable all users with expired accounts" or "delete all disabled users not in this AD group". I've seen some of the big multi-OS enterprise task automation systems and they just look way overkill. We're a windows-only shop, Server 2003 or newer and there's got to be a simple non-agent based product that is drag-n-drop for some of this basic automation. Today we use all three languages mentioned above, and the scripts are not as reliable as a workflow-based-tool would be. Thanks.

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  • Cygwin and zsh: removing "path prefix line"

    - by Viktor
    I've installed Cygwin under Windows 7 and I've added the line exec zsh -l to C:\cygwin\home\Viktor\.bash_profile. Problem is I still get that ugly new line for every command I write: (Viktor@INET)[2] ~ $ cd D: (Viktor@INET)[3] /cygdrive/d $ ls $RECYCLE.BIN Program Files (x86) System Volume Information Viktor xampp (Viktor@INET)[4] /cygdrive/d $ _ As horizontal space is no concern with 1920 pixels I would like to have the "Linux appearance", something like this viktor@inet> _ or whatever is default. One command shouldn't take three lines. And how do I change the colors? Edit. I also have Console2 installed, which I have set to use Cygwin, if that's any help.

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  • How to make FileZilla open all the required files with one click

    - by Omar Tariq
    Is there any way of configuring FileZilla so that I can open all the files on a server that I use to edit with just one click. For example if the files are like this: /home/abc/def/one.txt /home/abc/def/yet/another/directory/two.txt /home/abc/def/ghi/yet/another/directory/three.txt Then it is very time-consuming to navigate through each directory and open the required files. These are only 3 files but what if we have around 10 to 20 files? Yes, copying the path of the directories is one thing. But something that is built-in so that I can just click a button like open all the required files of this connection and it opens all the files in the editor (as set in FileZilla preferences) then that would be great!

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  • Two Ubuntu Instances (Guest) networking with XP (Host) in virtual box v3.1.4

    - by EnthuCrazy
    So here is my current objective: I need to create two guest instances of Ubuntu Desktop 9.10 in VirtualBox on a WindowsXP host. (This is needed for communications later on.) (this step is almost done) I need to establish networking between all three OS's, the host and two guests (Guest1 - Host - Guest2). I know that generally, to establish networking between Windows host and Ubuntu guest, we set up a bridge connection. But here there are two guests, and primarily I need networking between the two guests (Ubuntu to Ubuntu). So will there need to be a change in tap0 and tap1 interfaces when we set up a bridge, or is there a better way to implement this? Please explain the procedure.

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  • Hi , is there any wiki that supports ACL , ADI and API ? [closed]

    - by goutham
    Possible Duplicate: Which wiki satisfies ACL ADI and API ? Hi , is there any wiki that supports ACL , ADI and API ? and my requirement is we need a wiki that does three things 1. Uses ACL (Access Control lists - who can access what pages) 2. Needs AD (active directory integration) 3. Is scriptable via an API (meaning I can create a wiki page through an API in a program instead of logging in and manually typing in the page.) Ur help is appreciated Thanks in Advance Goutham

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