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  • How to contact an Email Administrator at a large company?

    - by Brett G
    Before I've had to deal with other larger companies, client of ours, when we have had e-mail issues with them. Most of the time it's when our messages have been tagged as spam, although right now it's because one of their systems has gone haywire and is repeatedly sending us e-mails. Anyway, my question is how do you get in touch with the email administrator. I've found at some larger companies unless you have the name of the person, the receptionist will refuse to connect you to them (I'd imagine they're acting as the gatekeeper from salespeople asking for "the person responsible for dealing with your printers"). I know we could always try to deal with our contact at the company, but sometimes that can be slow and difficult and these issues are usually time sensitive.

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  • Nightly backups (and maybe other tasks) causing server alerts

    - by J. Pablo Fernández
    I have two independent alert notification systems for my servers. The server is a virtual machine on Linode and one of the alerts comes from Linode. The other monitoring system we use is New Relic. They are both watching out for IO utilization. Every night I get alerts from both of them as the server is using too much IO. I run quite a few tasks in the middle of the night but the one I confirmed that can cause IO-warnings is running the backups. The backup is done by s3cmd sync. I tried ionice but it still generates the warnings. Getting warnings every night reduces the efficacy of warnings when they happen for real. For Linode I could raise the level at which a warning is issued, but it might mean making the whole thing useless as the level is too high. What would be the proper solution for this?

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  • How do I get transparent, efficient, file system snapshotting or versioning on ext3/4?

    - by shovas
    I've long thought about versioning file systems. This is a killer feature and I've looked at Wayback, ext3cow, zfs, fuse solutions, or just cvs/svn/git overlays. I consider ext3cow the model for my requirements. Transparent, efficient, but I can do without the extra ls abc@timestamp feature. As long as I somehow get automated, transparent versioning of my files. It could be instantaneous or it could be based on snapshots on intervals of 10s, 30s, 1m, 5m, 15m, etc. Just something that will efficiently deal with thousands of files in a given directory all of various sizes, most small, but some upwards of 100m to 1gb. ZFS isn't really an option as I'm on linux (and would prefer not to use it through fuse as I already have an ext3 setup I want to version, not something new). What solutions are out there?

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  • mirror sql server 2008 to AWS instance from our datacenter?

    - by Alex
    We are currenlty running on hosted pos system locally and would like to mirror to AWS. We are new to AWS and would like to know the most cost effective way to do this? We have 2 DB and 2 web servers right now in one cabinet in CA. One tape drive, one firewall, one SNA. We are thinking to replicate our system in AWS (using sql server 2008) and just mirror both systems and use a witness server between them to keep the data in sync? The goal is, if CA datacenter goes down, AWS keeps running. User see no downtime. All data is synced. Is anyone doing something similar? Would this be practical to just use AWS in this fashion? Thanks

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  • Please provide how to setup using VMware, AD [closed]

    - by user552585
    In my organisation we have more than 100 pcs and high configured 3 IBM servers. Now the senario is 300 employees with diff programmers like .Net,java,php etc. these employees use by these systems only in diff shifts without stop their work. I want all applications required them on every system and they have perticular id, Pw to login and i have to secure the organisation data and userdata to tamper or any thing by other users. Please provide how to setup using VMware, AD with MicroSoft environment with fully secured manner. please give brief explanation. Please help me

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  • Does multi-platter hard-drive use all of their heads to read simultaneously?

    - by WiSaGaN
    Suppose we have a harddisk with 2 platters with characteristics below: Rotational rate: 10, 000 RPM Avg sectors/track: 1000 Surfaces: 4 Sector size: 512 bytes I was reading "Computer Systems: A Programmer's Perspective 2ed" when I found that it calculates transfer time as if it only uses ONE head to read a sector. If that's the case, why not use 4 heads to write(read) on 4 surfaces? So when I write a 2K bytes file, each head should only need to wait for the platters to rotate just one sector length instead of 4, thus reducing the transfer time by a factor of 4. Or even redesign sector to make each sector on one cylinder but on 4 tracks residing same position respectively on 4 surfaces. Each one of (512/4) bytes. So when the hd needs to read a sector of 512 bytes, we only need the disk to rotate roughly 1/4 compare to original time. The idea looks like RAID 0.

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  • SFTP sending files between laptops on Ubuntu

    - by twigg
    I want to transfer files between two Ubuntu systems using SFTP. I have got it set-up and I can connect to the other laptop, ping it and see its file list using sftp> dir. I can see the files on the other system. But when I call get filename.deb it comes up saying Fetching /home/user/filename.deb to filename.deb 0% 0 0.0KB/s --:-- ETA and then drops back to the sftp command promote without transferring anything. Have I missed something?

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  • Windows 7 not showing other computers on network

    - by user24559
    I have several other machines that are on other operating systems (XP, etc.) and they show up just fine on other machines NOT running Windows 7. However, they do not show on the Windows 7 "Network" area. I can directly access them by typing the computer (\\mycomputer), then they show up on the list. However, they don't stick around and when I close Windows Explorer and open it again, the computer is not listed again in Network. There was never a problem using Windows XP where all the machines showed up just fine. This is not an access problem but a listing problem.

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  • RAID striping on a desktop machine

    - by Blazemore
    I currently have a 120Gib SSD which is pretty fast for things like game loading times and video editing. However, I was wondering about getting another identical drive and hooking it up with a striping RAID array in hardware (I boot multiple operating systems). This would have the dual benefits of providing a larger logical drive, while also providing greater performance. However, I have a few questions: What kind of performance increase can I expect to see with a pair of good quality SSDs? How expensive is a quality desktop RAID controller? Will the controller present the OS with a single logical drive? Does this mean I can still partition it and multi-boot? Basically, can I treat the RAID controller as "a hard drive" at the OS level?

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  • How to redirect a specific url through a proxy for multiple services?

    - by CrystalFire
    I have a website hosted on 000webhost.com for free. I am unable to connect directly to the site because Comcast has blocked a portion of 000webhost's servers for free accounts due to other people hosting malicious content. In order to maintain my website, I cannot use my computer to directly connect to the server. I am wondering if there is a way by which I can specifically forward attempts to access the server through a proxy, transparently. The current system that I am on is Windows, but I also have systems running Mac OSX and Linux, so solutions for any system could be fine. I've found answers which work for http, but I'm looking for a solution which will let me use all the other functions as well, such as ftp and ssh.

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  • Access Denied of a folder on a Drive

    - by kanchan bor gohain
    I wanted to restrict access of other people in a certain drive of my computer. What I did was go to the Security Tab (under Drive Properties) and remove the All Users entry. My account is an administrator account. I left only Systems and Administrator on the list. However, when I tried to access drive D, I got an Access Denied error, and Security Tab is already missing.i resolved the problem using safe mode way but i got another problem, I'd used command prompt to hide(attrib) a folder in drive D but i can't access it, though i can access all other files. I used cmd to unhide but access denied

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  • Remote Desktop Multi Monitor Connection

    - by user196039
    This question may be a bit unusual but I think it's an interesting angle: Why does a remote desktop connection to my server with all four of my 30 inch (@2560x1600) monitors work, even though the server doesn't have a graphics card installed? I guess the graphics are perhaps not really rendered on the server? What exactly happens there so that this works? Searching for this I mostly found "how to enable multi monitor support" but not an answer to my question yet. Any links/documentation I can read to understand this better? (To get all four monitors working well on my local machine the one graphics card I had wasn't even enough, so I have two graphics cards on the local machine now) The operating systems are Windows 7 home premium and it's a Windows Server 2008 R2.

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  • Good free way to clone a hard drive or a partition and send the image over the network (through FTP, Windows file sharing, "anything")?

    - by Deleted
    What I ideally would like is a free software solution which can: Boot from a CD/DVD/USB-stick and Clone a complete hard drive or a partition and Send the resulting image file over the network through Windows file sharing (SMB, I could use SAMBA on my server to receive the image) or through FTP or through SFTP or through SCP It should work with Linux and Windows file-systems (where specific file system support is necessary) Is there anything good out there like this? I know Wikipedia lists a lot of cloning software. But I'm looking for a personal recommendation which you have used yourself, as I find it more credible (I'll see from the upvotes if the answer is liked by a lot of visitors).

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  • 1 tera flop cluster?

    - by Adobe
    I want to buy a $40000 1 tera flop cluster to keep it in a room. What are the standard configurations? Cluster is supposed to do molecular dynamics simulations on biological systems. I'm proposed a 4 pc with 8 cores each by the selling company I'm deadling with. It looks like I also need infiniband. Does some one has an experience -- what phisical memory should I buy etc? I know things change very quickly... Still there might be a point or two to state. Edit: Custer is supposed to run linux, and gromacs in it.

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  • Who should own /var/www? [closed]

    - by John
    Possible Duplicate: How should I structure my users/groups/permissions for a web server? I've seen a few answers to this on the internet, but I'm looking for a definitive answer. I have a new Ubuntu 12.04 LTS server with LAMP. Apache is set to run as "www-data" and /var/www is set as having "root" as the owner and "root" as the group. The permissions for /var/www are "drwxr-xr-x" which I believe translates to 755 numerically. I know that /var/www should not be owned by "www-data" because then buggy/malicious code could have a field day. However, should I keep it as root:root (inconvenient) or should I change it to ubuntu:ubuntu, the default user that Ubuntu preconfigures for you to log in with? Should the permissions remain at 755? I've been administrating systems for a while with no big security issues, but I'm trying to get really serious about security, double-check everything, and make sure that there are no gaps in my knowledge.

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  • sync two huge filesystems

    - by guettli
    I need to sync two huge file systems. Both sides run linux with full root access. My preferred solution: I can read the list of changed files and directories and sync only the changed files. Here are some solutions and why they don't fit: rsync: Needs to check recursively all files. There are some million files and only little changes. The check takes too long. unison: the same: needs to check all files. inotify: I need a handler for every directory and there too many. Inotify was not build for "watch all files" scenarios. DRDB: Both sides should run independent.

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  • How to reference or vlookup a list of values based on a comma separated list of column references within a cell in excel?

    - by glallen
    I want to do a vlookup (or similar) against a column which is a list of values. This works fine for looking up a value from a single row, but I want to be able to look up multiple rows, sum the results, and divide by the number of rows referenced. For example: A B C D E F G [----given values----------------] [Work/Auth] [sum(vlookup(each(G),table,5)) /count(G)] [given vals] 1 Item Authorized OnHand Working Operational% DependencyOR% Dependencies 2 A 1 1 1 1 .55 B 3 B 10 5 5 .50 .55 C,D 4 C 100 75 50 .50 .60 D 5 D 10 10 6 .60 1 I want to be able to show an Operational Rate, and an operational rate of the systems each system depends on (F). In order to get a value for F, I want to sum over each value in column-E that was referenced by a dependency in column-G then divide by the number of dependencies in G. Column-G can have varying lengths, and will be a comma separated list of values from column-A. Is there any way to do this in excel?

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  • Load-balance with LAN and Wi-Fi

    - by Synox
    I have a Mac, which runs Mac OS X 10.6 or Ubuntu 9.10 or Windows XP (Multiboot). Solution can be for any of the systems, whatever works better. I have two ISPs, one can be accessed via Wi-Fi, one can be accessed via LAN. In Mac OS X I can define the priority, which network to choose first. But what I wish to do is to load-balance with both networks. I don't want to buy extra hardware. I have some unused Wi-Fi routers if this would help. Compiling and configuring programs in Linux is no problem for me. Similar question: Load balancing with multiple gateways

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  • Using windows 7 and fedora

    - by vedant1811
    I need to partition my hard disk for windows and fedora (root, swap, users). I thought of creating 3 (primary drives). 2 small ones (~5GB) each for win7 and fedora and a large (~700GB) for common files (pictures, vidoes, documents, etc.) one. Please Tell me which file systems to use in each case and the set-up of primary and extended partitions. Also I want to know, where and on which file system should the Linux Grub (my choice of OS chooser) be installed. I have just a bought a new Asus K53S and using the Fedora Installer Partitioner (Anaconda). Your help is greatly appreciated.

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  • Puppetize everything or not?

    - by stderr
    Notice: there is a lot of theoretical questions. Recently I'm reading about Puppet (and similar systems), which - as I believe - can make my work easier, a lot. But I try - and unfortunately can't - to understand what all I can "puppetize". I can imagine "clouds" or HA clusters, where is the same config on more servers. But what about workstations? I have one pc (centos with kvm), one notebook (fedora) and personal server, can (or should) it be puppetized? What are (dis)advantages? Or in our company we have hundreds of servers (mainly with centos), but each of them is a little bit different. Can't decide if it's better to have a lot of configs on one place.. (Dis)advantages? I will be happy for all your opinions or links with this topic.

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  • tab completion for service command on debian

    - by markus
    I have two systems with debian squeeze installed. On one system when I type: service <TAB> it shows me all available service (from /etc/init.d) on the other system it shows me all files from the current directory. Does anyone know which setting changes that behaviour ? UPDATE: The file /etc/bash_completion.d/service was missing. I copied it from the machine where it is working. If I type complete -p | grep service it shows me: complete -F _service service On the machine where it is not working that command shows me nothing. I executed complete -F _service service in the command line, after that, the command service <TAB> shows me: service -su: completion: function `_service' not found this function is defined in the service file I recently copied, for some reasons it can't be found ...

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  • Multiple monitors (3) in notebook using HDMI and vga port, with a graphic card only.

    - by user34427
    I have a HP dv9830us laptop. It has a vga-out and a hdmi-out port. I want to know if it's possible to use 3 devices, each one with different displays, using just one graphic card - NVIDIA GeForce 8600M GS? (Original, vga with an external monitor and hdmi with a full hd tv). Where I can find this kind of information? If not possible, I would like to know alternatives like: "Usb" solutions to be possible to connect to the external lcd or to a TV. The TV should be flawless, but the second monitor can have slow response times; Cheap PCMCIA video cards to be possible to connect to an external monitor, so I would use the hdmi with the tv and this second video card to output to another monitor. I'm using Windows 7 and Ubuntu 10.04. Is this possible in both systems?

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  • Are there any open-source simple network monitoring applications? [duplicate]

    - by scottm
    This question already has an answer here: What tool do you use to monitor your servers? 73 answers I am debugging a problem with one of our systems. Every Sunday, it stops communicating with another server. If we reboot both servers, communication works again. I was wondering if there are any small footprint apps that monitor TCP port availability and network connectivity, possibly logging any downtime. I'd also like it to be open source if possible, but if there is another solution that is proprietary, I'd like to hear about it also.

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  • EPM Infrastructure Tuning Guide v11.1.2.2 / 11.1.2.3

    - by Ahmed Awan
    Applies To: This edition applies to only 11.1.2.2, 11.1.2.3. One of the most challenging aspects of performance tuning is knowing where to begin. To maximize Oracle EPM System performance, all components need to be monitored, analyzed, and tuned. This guide describe the techniques used to monitor performance and the techniques for optimizing the performance of EPM components. TOP TUNING RECOMMENDATIONS FOR EPM SYSTEM: Performance tuning Oracle Hyperion EPM system is a complex and iterative process. To get you started, we have created a list of recommendations to help you optimize your Oracle Hyperion EPM system performance. This chapter includes the following sections that provide a quick start for performance tuning Oracle EPM products. Note these performance tuning techniques are applicable to nearly all Oracle EPM products such as Financial PM Applications, Essbase, Reporting and Foundation services. 1. Tune Operating Systems parameters. 2. Tune Oracle WebLogic Server (WLS) parameters. 3. Tune 64bit Java Virtual Machines (JVM). 4. Tune 32bit Java Virtual Machines (JVM). 5. Tune HTTP Server parameters. 6. Tune HTTP Server Compression / Caching. 7. Tune Oracle Database Parameters. 8. Tune Reporting And Analysis Framework (RAF) Services. 9. Tune Oracle ADF parameters. Click to Download the EPM 11.1.2.3 Infrastructure Tuning Whitepaper (Right click or option-click the link and choose "Save As..." to download this pdf file)

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  • SQL SERVER – Find Max Worker Count using DMV – 32 Bit and 64 Bit

    - by pinaldave
    During several recent training courses, I found it very interesting that Worker Thread is not quite known to everyone despite the fact that it is a very important feature. At some point in the discussion, one of the attendees mentioned that we can double the Worker Thread if we double the CPU (add the same number of CPU that we have on current system). The same discussion has triggered this quick article. Here is the DMV which can be used to find out Max Worker Count SELECT max_workers_count FROM sys.dm_os_sys_info Let us run the above query on my system and find the results. As my system is 32 bit and I have two CPU, the Max Worker Count is displayed as 512. To address the previous discussion, adding more CPU does not necessarily double the Worker Count. In fact, the logic behind this simple principle is as follows: For x86 (32-bit) upto 4 logical processors  max worker threads = 256 For x86 (32-bit) more than 4 logical processors  max worker threads = 256 + ((# Procs – 4) * 8) For x64 (64-bit) upto 4 logical processors  max worker threads = 512 For x64 (64-bit) more than 4 logical processors  max worker threads = 512+ ((# Procs – 4) * 8) In addition to this, you can configure the Max Worker Thread by using SSMS. Go to Server Node >> Right Click and Select Property >> Select Process and modify setting under Worker Threads. According to Book On Line, the default Worker Thread settings are appropriate for most of the systems. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Query, SQL Scripts, SQL Server, SQL System Table, SQL Tips and Tricks, T SQL, Technology Tagged: SQL DMV

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