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  • 2 Servers setup for redundency, backup

    - by minal
    I presently have 1 dedicated virtual server running my website/blog/mail, etc. This is on Hyper-V with 512MB RAM. Windows Web2008. With the VM, I have these running within it: SmarterMail – for emails MS DNS – I have my own nameservers on this server SQL Express IIS7 2 IP Address I have now leased 2 physical servers : P4 2.6Ghz 1GB RAM 80GB HDD. With these new servers, I get 2 IPs per server as well. These are running Windows 2008 Standard. With the VM the HDD was obviously on a RAID setup so I was not worried about hardware issues as it fell on the provider to manage. However, with the new servers the HDD is not RAID’d, hence my concern is that if it fails I need a backup position. What would be the most ideal setup to go for? I am thinking: Server 1: (Web/PrimaryDNS) DNS – NS1 SQL Express – OFF turn on when required, ie. Server2 is down SmarterMail – OFF turn on when required, ie. Server2 is down IIS 7 Server2:(SQL/Backup) DNS – NS2 SQL Web Edition SmarterMail IIS 7 How can I set it up so that if 1 goes down I can have everything on 2 instantly or by manual switching over. I am confused as other DNS servers will cache the web servers IP address for requests, and if that server goes down, the backup server will have a different IP. How do I make this work? I will be doing routine backups, in which case I will keep copies of backups on both servers. If I am copying the same stuff on both servers like a mirror then I am losing on using the true performance out of it. It's like 1 server is always on standby. Ideally I want SQL and web on 2 diff machines for best performance. If Server1 goes down, I should be able to switch to Server2 fairly easily. I don't have a problem with manual intervention to start the sql/mail services, etc. In terms of scalabilty, the VM has coped pretty well to date. Moving forward the SQL and IIS workload is going to double pretty quickly. Some ideas would be great.

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  • Apache Never runs after configuring eAccelerator and FastCGI

    - by Shoaibi
    I recently configured accelerator and fastcgi with apache using: http://secure-ubuntu-server.blogspot.com/2009/07/howto-performance-tuning-of-lamp-and.html Now my Apache never starts. Logs shows: Mon Jul 20 16:12:24 2009] [notice] ModSecurity for Apache/2.5.6 (http://www.modsecurity.org/) configured. [Mon Jul 20 16:12:25 2009] [notice] FastCGI: process manager initialized (pid 10919) [Mon Jul 20 16:12:25 2009] [alert] FastCGI: read() from pipe failed (0) [Mon Jul 20 16:12:25 2009] [alert] FastCGI: the PM is shutting down, Apache seems to have disappeared - bye

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  • HVM virtualization with PV drivers on XenServer

    - by Nathan
    Is it possible to create an HVM guest in XenServer 5.5 that uses PV drivers for disk and network without being fully paravirutalized? This should give me decent performance from the VM without having to jump through hoops to create a PV guest when a pre-built template doesn't exist. Since PV drivers exist for Windows, and XenServer provides templates for windows that use HVM virtualization this must be possible, I just don't see how to configure this myself.

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  • Windows 7 boot manager editor as an option in boot manager

    - by Tomek
    Is there any boot manager editor that I can run in DOS (possibly) before the system will load and edit boot manager itself? I would like to delete, edit VHD's and other files, copying them from the network, changing the names and adding to the manager)? Are there any other boot managers that I can use to boot up Windows 7 and 2008 from VHD file? I would like to have flexibility similar to virtualization w/o performance hit and ability to use all 4 processors on the server (using Windows HPC Server).

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  • There are lots of "Core i" CPUs, but Dell only offers a few -- who builds systems with the others? [closed]

    - by Jesse
    Passmark shows many varieties of Core i3, i5, and i7 cpus. Some of them, even at similar prices, are much faster than others. But Dell only offers a few options, and they're not the fast ones. For example, Dell offers the Core i5 650 (benchmark), which costs $220, and doesn't come close to the performance of the Core i3-2100 (benchmark), which costs $120. Does anyone sell systems with the faster, cheaper chips?

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  • Should my web server add trailing slashes to URLs or remove them?

    - by jnm2
    I've read in several places that you should decide whether you want trailing slashes or no trailing slashes in your site URLs and stick to your choice consistently. This makes sense, but which should I pick? Is there a convention I ought to follow, performance to be gained, or is it totally up to my taste? (I notice that the StackExchange sites link without trailing slashes, but SE doesn't redirect if you add a slash.)

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  • IIS Express only utilizes 13% of i7 Quad Core

    - by John Nevermore
    Since one of my scripts got incredibly complex, i was benchmarking the performance of moving some javascript processing logic to the server side in my ASP.NET MVC 4 application. According to taskmgr.exe, IIS Express only utilizes 13% of my i7. I decided to throw in 3 parallel tasks calculating the fibonacci sequence up to 50 and the IIS express still wouldn't utilize more than 13% of my cpu. Is there anything i can do, so that the application utilizes the full cpu, as it would in a real server ?

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  • Tomcat - Spring Framework - MySQL, Load balancing design

    - by Mat Banik
    Lets say I have Spring Framework App that is running on Tomcat and uses MySQL database: What would be the best solution in this instance that would allow for sociability (price/performance/integration time)? More precisely: What would be on the Web Load balancer box, and who should be the tomcat web server clustered? What would be on the Database Load balancer box and how should be the database servers clustered? And if at all possible specific technical integration links would be of great help.

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  • Cat5 vs Cat5e vs Cat6 cable confusion

    - by David Hayes
    I'm just about to move house so I'm going to have to disconnect and re-wire my network. Pretty much all the devices I have support gigabit ethernet should I go out an buy some decent network cables (and if so what type) or should I continue using my mix of cat5 cables I've acquired over the years. Does the type of cable really make a difference to my LAN performance??

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  • Is bigger capacity ram faster then smaller capacity ram for same clock and CL?

    - by didibus
    I know that bigger capacity hard-drives with the same RPM are faster then smaller capacity hard-drives. I was wondering if the same is true for ram. Given two ram clocked at 1600mhz and with identical CLs: 9-9-9-24. Is a 2x8 going to perform better then a 2x4 ? Note that I am not asking if having more ram will improve the performance of my PC, I'm asking if the bigger capacity ram performs better. Thank You.

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  • What does the filesystem give me?

    - by Alec
    I'm writing a specialised database. It currently sits atop of ext4, with one big file that it reads and writes to. I'm wondering whether it would be worth forgoing the filesystem and reading and writing directly to the device. I already use O_DIRECT, so as far as I can tell it wouldn't require much of a code change. What might the risks, advantages and disadvantages of forgoing the filesystem be? Is it likely to improve performance, or harm it?

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  • CentOS with an Ubuntu kernel

    - by Gaia
    The Rackspace cloud server tech tells my CentOS 5.4 VPS (Xen) runs "CentOS with an Ubuntu kernel" Could someone explain, in plain terms, what "CentOS with an Ubuntu kernel" means and if there are any disadvantages (performance, mgmt) between that and running CentOS with a CentOS kernel? Thanks

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  • RabbitMQ and persistence (blocking writes?)

    - by daharon
    I want to create a RabbitMQ server on a virtual machine (VMware) to be used in production. It will contain persistent queues. I'm wondering if it is a bad idea to store the server on a NAS that's accessed over NFS. Basically my questions are: Will RabbitMQ's writes be blocking? Will the entire queue's operation halt on a write? How much performance degradation should I expect when persisting over NFS?

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  • HP Colour LaserJet Printer Hard Drive

    - by Jon Rhoades
    We are struggling to print Student's Theses on our HP CLJ CP4025 Printers (It will only let us print 1 at a time & typically they need multiple copies). Supposedly the solution is to install the optional Hard Drive. My question is: a) Does a hard drive on the printer make a significant difference? b) Can we use any old hard drive or do we have to use the rather pricey HP High performance EIO units?

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  • Application to test a cluster/grid

    - by Mystic
    Is anyone aware of any application (computation + data) that I can download to test an in-house grid middleware that will run on a local cluster. I hope to compare the performance with other available grid systems.

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  • Should I keep my swap file on an SSD drive?

    - by Steve Rowe
    I'm considering getting an SSD drive to run as the primary OS partition. As I understand, this should provide a substantial improvement in performance. My question is this: Should I leave the swap file on that drive? The swap partition will be largely random seeks and so should benefit from the speed. On the other hand, it will be constantly written to which will wear out the drive faster.

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  • Windows server 2008 R2 error :The page file is to small to complete the action

    - by kishore
    I have a windows server 2008 R2 standard edition. The system suddenly stopped accepting remote desktop connections. When I tried to connect directly to the console, I am unable to start any applications. I got errors "The page file is to small to complete the action". Under takmanager in performance the system shows "Commit(GB) 127/127". What does this imply? The system has 32 GB ram, 5 raid disks each 150 Gb

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  • Shrink Sql Server database

    - by hani
    My SQL Server 2008 database file (.mdf) file is nearly 24 MB but the log file grown upto 15 GB. If I want to shrink database what are the important points to take into consideration? Will shrink causes any index fragmentation and does it affect my database performance?

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  • Can an SATA hard drive image be restored onto an SSD?

    - by Bryan Parker
    I'm currently using an SATA hard drive on my primary dev machine, but planning to upgrade to an SSD at some point soon. I use TrueImage on a regular basis to make backups, and to upgrade my harddrive without reinstalling everything. Will I be able to restore and boot onto an SSD? Will there be a performance hit or other issues to watch out for?

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  • CPU/Mem/Disk utilization (average) after process has completed

    - by BassKozz
    Ubuntu Server 9.10 So there is the time command which will show you the time it took for a specific process/command to run after the command has completed. For example: :~$ time ls real 0m0.020s user 0m0.000s sys 0m0.000s I'd like to also collect the average CPU usage, Memory, and Disk (i/o) utilization after the process has completed using time (or another command if necessary). How can I accomplish this? Mainly I am using this to benchmark MySQL import performance using different innodb_buffer_pool_size settings.

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  • compile Passenger statically into Apache httpd?

    - by Oleg
    I prefer to disable httpd dynamic module loading on my production server. I've been using mod_jk linked statically into httpd for quite a long time and it proved to be stable. Now I would like to add Ruby Passenger (mod_rails/mod_rack) to my httpd. I wonder if it is possible to link it statically into Apache httpd the same way too? (without producing a huge httpd) If it is, are there any potential pitfalls, safety or performance concerns having both mod_jk and mod_rails within the same executable? Thanks

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