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• Concurrent backups in SQL Server?

  - by Mikey Cee

  We currently have our backups managed by a third party company. There are a bunch of agent jobs created that take full backups (4 times a day) and transaction log backups (4 times an hour). We now want to manage our backups in house, but don't want to disable the third party's jobs until we are sure that we have everything configured correctly internally So I am proposing to have a short period (say, a couple of days) where backups are being taken both by the old and the new system. I am wondering what the ramifications of having these two different systems both manage backups, and the potential pitfalls of having backups taken simultaneously. Is this even supported? If so, and bearing in mind that the system can cope with one backup without any noticeable performance degradation, is it fairly logical to assume that it should be able to cope with two simultaneous backups? Currently the load on the server is fairly light and it rarely struggles. Any advice is appreciated

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• What does the "Maximum Frequency" number mean in the Windows Resource Monitor?

  - by nhinkle

  In the Windows Resource Monitor's CPU tab, there is a status box and graph for the "Maximum Frequency", right next to the "CPU Usage" values. What does this mean? The value is sometimes over 100% on my system... what could that imply? By looking at CPU-z's real-time report of the processor's clock speed, it seems to be loosely related to what frequency the CPU is running at, which would imply that it means "percent of maximum possible frequency the CPU is running at"; this would be of relevance on systems with SpeedStep and/or TurboBoost technology (or similar). Furthermore, setting the system to "power saving mode" lowers the "maximum frequency" value to around 60%, while setting it to "high performance" mode sets it to around 110%. However, the percentage does not seem to exactly correlate to the CPU speed being shown. What value is this actually representing then?

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• windows server 2008 vs ubuntu 11 [closed]

  - by user472875

  I am working on implementing a custom server application that should be capable of handling a very large volume of traffic. I am aware that this type of question has been asked a lot, but I haven't been able to find a good answer. What I'm really looking for is for a server with given specs which OS will be able to handle a larger traffic faster and more reliably. I do not care about rights management or any other features. I am fairly good with both platforms, and so I would like to pick the OS with better performance on a clean install, and with nothing else running. Thanks in advance.

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• Unable to Get IIS Response Times with Hyperic Monitoring Tool

  - by jwmajors81

  We have a very large .NET application (vendor) that I am trying to gather performance metrics for using Hyperic. In general I wanted to be able to report response times for each of the components within the application, which include: Web Services ASP.NET Pages MSMQ I am currently unable to successfully monitor the response times for IIS on my windows machines. I have successfully auto-discovered them and I am getting diagnostic information, but am not getting back the response times. After looking online at what other people are seeing, I found that I am missing a tab for the response times which is usually next to the metrics tab. Also, when I look at the configuration screen for IIS I do not see a field which enables me to specify where the log files are located at. Please note that my logs are located at e:\LogFiles\ instead of the usual location because our IT staff doesn't allocate much space for the C: drive. Please note that I have the MSMQ monitors up and running great. Any assistance would be greatly appreciated. Thanks, Jeremy

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• Trying to determine the correct number of XFS allocation groups for postgresql server on Linux

  - by HBlend

  I am running a postgres 8.4.5 server on the linux 2.6.33.7 kernel on an 8 disk raid array with an LSI controller. Most of the tables are around 1GB or less. I know that XFS uses allocation groups (AG) to achieve I/O parallelism. My first question is, does this mean that if two tables are in the same AG, all I/O requests are queued to both of them if either is being read from/written to? If so, I assume I would want to spread my tables across as my allocation groups as possible, correct? Wouldn't this ensure that multiple users querying different tables would get the best performance?

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• Is there any way to stop or pause Windows fake-raid re-synching?

  - by haimg

  I have two physical disks, each one holds two volumes, they are Windows fake-RAID1. E.g.: Disk A: Partition1 Partition2 Disk B: Partition1-Mirror Partition2-Mirror After an unclean reboot, Windows started resynching these as expected. What was not expected, however, is that it started resynching both volumes at the same time. Both disks seek back and forth like crazy, and synching performance is horrible. Question: Is these any option to stop or pause synching of just one volume? I know I can put one of the disks offline, but that will stop synchronization of all volumes on that disk. Note: I have certain reasons why I need to torture myself with Windows RAID. I'm not interested in alternative RAID solutions right now.

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• SQL Server 2008 data directiories in SSD

  - by Kuroro

  I am going to install a new SQL server 2008 instance on my development/testing machine. My machine have one 7200rpm 500GB SATA Disk (C:OS) and one Intel X25-G2 80GB SSD(D:). Details machine config is as follow: CPU:i7 860 RAM:8GB Microsoft said I have an option to place following directories in different disk. So I plan to place User database & Temp DB on SSD and rest of it on traditional disk. Is it a good choice for gaining a performance boost in fast SSD? Data root directory :C:\Program Files\Microsoft SQL Server User database directory D:\Data User log directory C:\Logs Temp DB directory D:\TempDB Temp Log directory C:\TempDB Backup directory C:\Backups

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• 10,000 RPM HDD (WD VelociRaptor) vs SSD for OS?

  - by GiH

  I currently have a 10,00RPM 150GB Raptor that I use for Vista. I'm about to upgrade to Windows 7, and while doing that I thought I'd buy another drive and install Ubuntu 9.10 on it. I don't want to partition the current drive I have, but I don't need 150GB for another OS. So, I'm having trouble deciding whether its worth it to buy a 64 GB SSD at the same price point as the 150GB WD VelociRaptor? Or should I just get a 7,200 RPM drive for really cheap (around $50)? Would it be better to use an SSD for the OS than a mechanical drive? I could always get a 32GB SSD too... Oh, and I don't want to virtualize Ubuntu because I'm going to be testing to see the differences in networking and overall performance.

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• External hard drive encryption

  - by Kragen

  I've got a complete backup of my main PC on 1.5 TB external hard drive that I carry around with my laptop so I can have access to all of my files while I'm on the move, however it has just dawned on me that if someone nicks my external hard drive they now have access to everything! Hence I'm looking for a way to encrypt my external hard drive. I'm after something that is: Secure (if I need to carry around a USB dongle to keep the key on so be it) Fast (the performance of the drive should still be reasonable) Cross-platform (I regularly use other peoples computers - Sometimes they are not windows based and might not even have internet access, however I still want to be able to access my files) Cheap (preferably free / open source!)

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• Turning off Chrome's visual effects

  - by Wesley

  Is there any way to turn off the visual effects used by Google Chrome? For example, the tabs slide around smoothly, the scrolling is really smooth, and there is a huge arrow that fades in and out during download. Reason why I'd like to know is primarily because I want to maximize battery life on my netbook by using less visual effects and, secondly, because I use Chrome on slower systems and would like to maximize the performance and efficiency of Chrome. This applies mainly to Windows XP, but also Vista, 7 and even (X)Ubuntu 9.10. EDIT1: Oh yes... disabling the attaching/detaching of tabs and turning them into translucent in the process. That's a bit stressful on my slower machines.

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• Using a Raspberry Pi as a VPN?

  - by sudo rm -rf

  So I'm sure many of you have heard of the new Raspberry Pi project. I was looking at messing around with Model B, which has the following relevant specs: Broadcom BCM2835 700MHz ARM1176JZFS processor with FPU and Videocore 4 GPU 256MB RAM Boots from SD card, running the Fedora version of Linux (ARM Version) 10/100 BaseT Ethernet socket USB 2.0 socket So I was curious if it would be possible to create a simple VPN out of this little machine. I do realize that since it's an ARM processor that might mess up quite a few things. Any ideas if this is possible? Just for what it's worth, this would be a personal project so I'm not worried about performance.

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• Worth it to move /var to physical disk vs logical?

  - by Tammer Ibrahim

  Brief question about partition layout. I use an SSD for /, /boot, /usr, & /home partitions. I'd like to move /var to a mechanical disk to minimize writes to the SSD. I'm mainly concerned about maximizing drive life rather than maximizing performance (although I obviously wouldn't want to cripple my server). My mechanical disks consist of two drives sharing LVM, and a third used for nightly rsync backups. I also have a bunch of old 2.5in hard disks lying around. My question is, should I simply create a new LVM volume '/var' on my primary data store, or would it be worth the increased energy consumption (in terms of maximizing the lifetime of the LVMed drives) to install a low volume 2.5in disk to use just for /var? On a more general level my question is about the trade offs of placing OS mounts on the same physical volumes as my data. Thanks for any help!

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• Return http status ok (200) on request method OPTIONS Apache

  - by jazz

  I have a apache server which uses Reverse Proxy to connect/direct to a tomcat server. Using virtualHost, RequestHeader set X-Forwarded-Proto "http" ServerName image.abc.local DocumentRoot "/var/www/html" ProxyRequests Off ProxyTimeout 600 ProxyPass /abc http://image.abc.local:9001/abc ProxyPass /xyz http://image.abc.local:9001/xyz ProxyPassReverse /abc http://image.abc.local:9001/abc ProxyPassReverse /xyz http://image.abc.local:9001/xyz what i want to achieve here is that, when there is a REQUEST_METHOD OPTIONS i want simply return HTTP status OK (200). I dont want the request to be received by the tomcat server and process it. For performance based concerns i want this request to be handled at apache level. with all the research i was still unable to get this to run; RewriteEngine on RewriteCond %{REQUEST_METHOD} OPTIONS RewriteRule .* - [R=200m] can somebody assist me with what rewrite rule should be there? or is there an alternative to RewriteEngine? Thanks

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• Server 2008 Hard Faults

  - by claw

  Hey all, plase bear with me as I haven't looked at a server in a very long time. The problem I am having is with a Windows 2008 Standard FE Service Pack 2 Intel Xeon X3430 @ 2.40 2.39 GHZ 4 GB Memory 64 Bit There seems to be no problems other than the physical memory peaking at 91%, always with over 100 Hard Faults Per Second. To my understanding hard faults should be fairly rare on a machine with. Are there any logs I can show you? Or investigate myself. The general performance of the machine is ok, i can access SBS2008 and change settings fairly smoothly without hangs etc. However, we connect to the server and do quite a bit of SQL via an application. For a record to retrieve say 20 rows, it can take 20+ seconds. Thanks in advance, Jamie EDIT: What the server is used for: IIS ASP Web Service SQL 2008 List item Exchange unable to upload screenshots due to low reputation - why doesnt my SO work here :)

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• Apache - Difference between ScriptAlias and WSGIScriptAlias

  - by Jiri Kadlec

  I'm using apache on RHEL Linux server In my /etc/httpd/conf.d/httpd.conf there are two directives: WSGIScriptAlias /apps /var/www/apps <Directory /var/www/apps > Options MultiViews ExecCGI MultiviewsMatch Handlers SetHandler wsgi-script Order allow, deny allow from all </Directory> ScriptAlias /scripts /var/www/scripts <Directory /var/www/scripts > Options MultiViews ExecCGI MultiviewsMatch Handlers SetHandler wsgi-script Order allow, deny allow from all </Directory> What is the difference? I understand that WSGIScriptAlias is restricted for running Python scripts and ScriptAlias also allows running perl scripts. Can I always use ScriptAlias instead of WSGIScriptAlias? Are there any performance advantages of using WSGIScriptAlias instead of ScriptAlias?

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• Why does TeamViewer launch a web server?

  - by OverTheRainbow

  Hello I just read this article which I find concerning: "After 90 minutes of troubleshooting, Nash traced the problem to TeamViewer, which he used to remotely administer the client's servers. It turns out the program had opened up its own webserver on the client's machine as soon as Apache went down and in the process made it impossible for the client, a large provider of business software, to restart its proper website." http://www.theregister.co.uk/2009/07/24/teamviewer_snafu/ I started using TeamViewer recently because it's just much better than UltraVNC (runs on both XP and Vista, the server dials out instead of requiring the user to open a port on their router + better performance than UVNC)... but I thought that TeamViewer had both the server and client connect out to TV's web server for data to flow between the two hosts. Why does TV even need to open a web server on the server host? Thank you.

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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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• Cheap windows shared hosting service

  - by Elangovan

  Hi I have recently purchased a domain from go daddy, now I am looking for a cheap windows hosting. Following are my requirements Shared Windows hosting Should be cheap in price Should have at least one SQL server Db and one mysql db. Should support atleast asp.net 3.5 and php Will be good if it has support for asp.net mvc (no problem even if it is not available also) Should be able to install third party blog sites. Bandwidth, total space and performance are not very important. Silverlight is also an added advantage (no problem even if it is not available also). There should be no advertisement or banner added by the hosting company in the site. Should have support for subdomains

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• VirtualBox: Host OS processor is spiked while guest OS virtual processor is idle?

  - by Greg Mattes

  I'm running Windows XP 32-bit on Windows Vista 64-bit with VirtualBox 3.0.6. Whenever I run the XP VM, Vista (host) reports 100% cpu utilization even though XP (guest) reports between 1-5% cpu utilization. The host box has 2 GB of physical RAM. The guest/vm is configured with 512 MB. The host box has a 64-bit AMD processor. No apps (other than VirtualBox) are running on either host, they're just idling. Any guesses as to why the host processor is spiked? I've enabled various advanced features for the XP guest in the hopes of having better performance: Settings → System → Motherboard: Enable IO APIC Settings → System → Processor: Enable PAE/NX Settings → System → Acceleration: Enable VT-x/AMD-V and Enable Nesting Paging

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• video streaming infrastructure advice

  - by Alchemical

  We would like to set-up a live video-chat web site and are looking for basic recomendations for software and hardware set-up. Most streams will be broadcast live from a single person with a web cam, etc., and viewed by typically 1-10 people, although there could be up to 100+ viewers on the high side. Audio and video do not have to be super-high quality, but do need to be "good enough". The main point is to convey the basic info in the video (and audio). If occasionally the frame-rate drops low and then goes back to normal fairly soon, we could live with that. Budget is an issue, so we are in general looking for a lower cost solution that will give us most of what we need in temers of performance and quality. We are looking at Peer1 for co-lo. The rest of our web site will be .Net / Windows platform. We are open to looking at any platform for the best streaming solution, although our technical expertise is currently more on the Windows side.

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• Terminal Services - MS Access Frequently "Not Responding"

  - by jonfhancock

  Exposition: We use a program built in MS Access that I serve via Terminal Services. I just installed a new TS Server with a Quad Core 2.6GHz Xeon, 8GB RAM, and 4 SATA drives in a RAID 0. In installed Server 2008 R2 (64bit obviously). It's only role is TS. The problem: With just a few sessions (under 10), I start getting frequent Not Responding messages in each session. When it happens, the users aren't doing anything particularly taxing, just form navigation and simple insert queries. I can live with some stalls, but it is visually jarring in WS08 because the screen goes gray, and it presents a dialog offering to wait or close with some other options. Questions: Any suggestions for improving performance and reducing hangs? Is it possible to disable the dialog (always wait) and screen graying?

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• Drivers for Quick Cam pro 9000 on Windows 7

  - by runaros

  I have a Logitect Quick Cam Pro 9000 that I want to install on my Windows 7 installation. The user manual specifies that I have to install the software before I install the camera. But my experience is that software from hardware vendors tend to decrease computer performance, so I was wondering if this camera will work by only plugging it in and letting Windows 7 find and install the drivers for it. I could've just tried installing it of course, but again, hardware vendors are notorius for fucking up things, and I wouldn't want to make it impossible to install the camera by doing things in the wrong order, hence the question here on SuperUser because I assume somebody is more knowledgeable than me on this subject.

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• Does Ubuntu 12.04.1 come with everything I need for using virtual servers and are the tools efficient?

  - by orokusaki

  I noticed that Ubuntu 12.04.1 comes with Xen, OpenStack, KVM and other virtualization-related tools. I have used VMWare in the past. If I was to use Xen for visualization, would I see considerable performance lost, since Xen is run on the host OS? Is it even run on the host OS, or is it like VMWare where it's installed below any Linux OS on the machine (embedded, I guess is the word)? Do you have any recommendations on what sort of set up to use with these built-in tools? I have 2 physical servers, side-by-side. Each will need a VM used for Postgres and a VM used as an app server. One will be a failover for the other.

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• XPP-32 over W7-64 on music production laptop

  - by quarlo

  I need to upgrade my laptop and need high performance for music production (recording and mixing). My audio interface manufacturer seems to be unable to successfully convert their drivers to 64-bit. I do not trust a virtual machine to handle real-time audio recording at low enough latency so ... I would like to install XP Pro 32-bit on a separate partition and dual boot since most of the machines that can handle this application now ship with Windows 7 64-bit flavors. I'd like to transit to 64-bit over time assuming M-Audio does eventually get a handle on 64-bit drivers, but really need to ensure that I can stay at 32-bit for now. Does anyone have any experience with this or something similar?

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• Best way to duplicate databases nightly?

  - by Margaret

  Hey all We just got two new servers, that are running Windows Server 2008. The intent is to make the machines pretty much identical, copying the content of the master to the slave on a nightly basis, so that if anything fails, the second copy can stand in immediately. It doesn't need to be up-to-the-minute mirroring, though I suppose that wouldn't hurt if performance is not affected. The two machines will, amongst other things, each be running an instance of SQL Server 2008. The aim is to duplicate the databases on the master down to the slave on a nightly basis. Unless I'm misunderstanding, the slave databases in mirrored databases require the primary to be present to work correctly; I'm hoping for some solution where we have a second machine that can be up and running with minimal downtime if the first one falls over. Am I misunderstanding mirroring? Is that the best way to do things, or should I use some other mechanism? If so, what?

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