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  • Run a MongoDB configuration server without 3GB of journal files

    - by Thilo
    For a production sharded MongoDB installation we need 3 configuration servers. According to the documentation "the config server mongod process is fairly lightweight and can be ran on machines performing other work". However, in the default configuration, they all have journalling enabled, and with preallocation this takes up 3 GB of disk space. I assume that the actual data and transaction volume of a config server is quite small, so that this seems a bit too much. Is there a way to (safely!) run these config servers with much less disk use for the journal? Do I need journalling at all on config servers? Can I set the journal size to be smaller?

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  • 3ware RAID in Windows 7

    - by scribbles
    Just moved a 3ware 9500S-8 raid card and a few drives from my linux box into my win7 box. Windows Updates picked up the 3ware driver and installed it. After a reboot I checked Disk Management and it shows the array as one solid drive with the correct size. The only issue is that its not assigned a drive letter and when I right click on it my only option is to Convert to Dynamic Disk... From what I've read this is not something I want to do. What are my options?

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  • Questions about adding space to an Amazon EC2 Instance

    - by Misha
    I have an Amazon EC2 instance that is running a simple LAMP stack with Amazon's flavor of linux. I want to stop it and add more disk space. We will need more than our current 8 gigabytes. I was wondering: 1) When I stop my instance what will be lost? Will the content of /var/www be lost? What does this mean? I am sure my instance isn't a spot instance. 1.5) What is an ephemeral disk? Is my instance completely ephemeral? Are parts of it ephemeral? When I press "stop", probably, not everything is cleared. So what is cleared? 2) Amazon has tools in the Management Console to facilitate enlarging an instance? 3) Will I have to re-partition the instance? Can an instance expand the partition it is running on?

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  • High server load - [jbd2/md1-8] using 99.99% IO

    - by Alex
    I've been having spike in load over the last week. This usually occurs once or twice a day. I've managed to identify from iotop that [jbd2/md1-8] is using 99.99 % IO. During the high load times there is no high traffic to the server. Server specs are: AMD Opteron 8 core 16 GB RAM 2x2.000 GB 7.200 RPM HDD Software Raid 1 Cloudlinux + Cpanel Mysql is properly tuned Apart from the spikes, the load usually is around 0.80 at most. I've searched around but can't find what [jbd2/md1-8] does exactly. Has anyone had this problem or does anyone know a possible solution? Thank you. UPDATE: TIME TID PRIO USER DISK READ DISK WRITE SWAPIN IO COMMAND 16:05:36 399 be/3 root 0.00 B/s 38.76 K/s 0.00 % 99.99 % [jbd2/md1-8]

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  • Cannot boot from USB on my Mac mini

    - by Thai Tran
    Two weeks ago I installed OSX 10.8 on my Mac mini. After that, my system started to hang a lot, so I tried to erase it and install OSX 10.7 again. I used carbon Copy Cloner to make the bootable USB and it can load successfully on another Macbook. However, on my Mac mini, when I press on the option button to select the USB, it loads the white screen with a ban symbol at the center of the screen. After a moment, my machine automatically shuts down. Does anyone know how to solve this problem? Edit: this is exactly the problem I have now http://forums.macrumors.com/archive/index.php/t-1207168.html Update 1: the hdd seems ok (from disk utility). I restored the booting partition by disk utility (drag the dmg file to that partition). After restarting and using that partition to boot, prohibited symbol is still there

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  • Best alternatives to recover lost directories in FAT32 external hard drive?

    - by Sergio
    Hi: I have an 320 GB ADATA CH91 external hard drive. I guess it has some problems with the connector of the USB jack. The point is that in certain occasions it fails in write operations generating data losses. Right now I lost a directory with several GB's of very useful information. Since then I have not attempted to write to the disk any more. What tool would you recommend to recover the lost data? The disk is FAT32 formatted (only one partition) and I use both Linux and Windows. What filesystem format would you recommend to avoid future data losses? I currently only use this external hard drive in Linux so there are several available choices (FAT, NTFS, ext3, ext4, reiser, etc.). Regards, Sergio

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  • Red Hat cluster: Failure of one of two services sharing the same virtual IP tears down IP

    - by js01
    I'm creating a 2+1 failover cluster under Red Hat 5.5 with 4 services of which 2 have to run on the same node, sharing the same virtual IP address. One of the services on each node needs a (SAN) disk, the other doesn't. I'm using HA-LVM. When I shut down (via ifdown) the two interfaces connected to the SAN to simulate SAN failure, the service needing the disk is disabled, the other keeps running, as expected. Surprisingly (and unfortunately), the virtual IP address shared by the two services on the same machine is also removed, rendering the still-running service useless. How can I configure the cluster to keep the IP address up?

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  • Cannot format SD memory card

    - by cool
    Hello everyone I have a SD memory card which is of local manufacturer it allows to read & copy from it but not write as it is now write-protected so i want to format that card but could not. To format this card I have tried 1) DD command 2) mkfs -f vfat command 3) creating registry entry under storage device policy in window with write value 0 4) disk part command in window to clear attributes in which it show all attributes are clear ie no write protection 5) I format card in windows through control panel - administrative tools- computer management - disk management, then it show as formatted but when I tried to create new partition it give CYCLIC REDUNDANCY CHECK error 6) I downloaded a format utility from transcend site and formatted first it shows write protected again doing format it formats and tells to remove and reinsert after reinsertion it shows the previous data as it is

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  • What would happen in a Software Raid 1 of one HDD and one SSD?

    - by Adrian Grigore
    Hi, I'm running my Windows 7 installation and all of my apps from an SSD for performance reasons. Since SSD's can instantly die at any moment, I'm looking for some kind of data backup strategy. Right Now I regularly backing up the drive image on a hard disk, but that only happens once per day, which is not enough for my taste. So I got an idea: What if I created a software raid 1 of the SSD and partition on my Hard disk? All data would be mirrored on both drives, making this a lot safer. But what about performance? Will Windows 7 detect that the SSD is faster than the hard drive and always read from the SSD? Or will it randomly read from both, thus reducing read performance? Thanks, Adrian Edit: I just found this article which basically answers my question. Feel free to close this post.

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  • How can I stop sysprep from interacting with boot on windows 7

    - by Grofit
    I have recently had a laptop sent back to supplier for fixing a mainboard fault. I got it back today and every time it boots up I am faced with: "Setup is preparing windows for first time use" Then once it gets to the desktop I get the sysprep dialog come up asking if I want OOBC or Audit actions. I can close it, but it just keeps coming back, and I cannot find any startup or boot actions, even downloaded autoruns, and that cannot find anything to do with it. Ideally I do not want to format/fdisk as I have just spent hours installing everything on the laptop and I have my primary C:/ which has all windows and at worst case I can get rid of that, but I have a secondary partition D:/ which has alot of stuff I cant lose as its work related and important. Also to make matters more difficult I do not have a windows 7 disk, it was just pre-installed and they dont provide a disk. Any help would be great!

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  • Disabling RAID feature on HP Smart Array P400

    - by Arie K
    I'm planning to use ZFS on my system (HP ML370 G5, Smart Array P400, 8 SAS disk). I want ZFS to manage all disks individually, so it can utilize better scheduling (i.e. I want to use software RAID feature in ZFS). The problem is, I can't find a way to disable RAID feature on the RAID controller. Right now, the controller aggregates all of the disks into one big RAID-5 volume. So ZFS can't see individual disk. Is there any way to acomplish this setup?

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  • Why do I have multiple drives in my backup system image?

    - by bebop
    I have a drive which has 2 partitions. One is where the OS is installed, the other is a data (but not libraries) drive. When I try and create a backup using the built in tool, it wants to include both partitions in the system image. Why does it do this? If I move the os to a separate drive will I be able to back up just this data? Edit: To be more clear. I have 4 disks in the machine. 1 disc has 2 partitions. These are c: and e:, the other disks are d: f: and h:. The OS is installed on c: and libraries are stored on h:. The libraries are already backed up using crashplan, but I want to create a system image so I can easily restore the machine, if it either dies or if I get a SSD drive. When I choose backup (either through the wizard or if I open it through control panel) and check (or click) create a system image it automatically adds both c: and e: to the list of drives that will be backed up, and I cannot change this, the checkboxes to unselect are greyed out. I would like to know why it automatically adds e: to the list (but not h:, where the libraries are) and if I can change some setting so whatever files it has on e: that it thinks need to be backed up as part of the system image are moved to c:. How can I determine what they are? Is it because c: and e: are partitions of the same disk? If I move c: tro a different disk will that mean I only have to back up c:? Thanks Edit 2: I have viewed all files including hidden and system ones on both drives and it seems that I have a suspicous hidden e:\boot\ folder. I think that I might have installed the OS as a VHD at first then installed a seperate version straight on the disk, having dual boot for a while, then used EasyBCD to remove the VHD boot and file. Might this be what is causing my issue? How might I go about removing this? is it safe to just delete the boot folder?

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  • Why does Windows run CHKDSK on every boot?

    - by khris
    Every time I turn on my PC, I get the following message: Checking file system on E: The type of the file systen is NTFS. One of your disks need to be checked for consistency. You may cancel the disk check, but it is strongly recommended that you continue. Windows will now check the disk. CHKDSK is verifying files (stage 1 of 3)... 0 percent completed I allow CHKDSK to to complete, but Windows does not load. This message appears every time I boot my computer. Could someone explain me why this message appears and what I should do to make it disappear?

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  • How to make a pxe bootable 10MegaByte or larger dos image?

    - by rjt
    Would like to make a "massive" DOS floppy disk image, say 10MegaBytes or more containing all the firmware updates i need for any system, harddrive, BIOS. i do not need the DOS image to be networkable as everything will be on the PXE booted image, but networking would be nice. Since ZipDisks were attached to the floppy disk controller and were over 100MegaBytes, this should be possible. i tried a long time ago to do this and spent too much time on it only to have it fail to boot. So if someone has reliable instructions on how to create such a nightmarish beast and edit it, please let me know. One image that can used for PXE and copied to a USB stick would be a plus. Too bad manufacturers don't supply a single bootable Linux ISO containing all their firmware updates, that would be easy to boot over-the-lan and have networking. HP servers do this and it is awesome.

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  • What things should I run daily, weekly, monthly on my Windows machine?

    - by Jitendra vyas
    What things should I run daily, weekly, monthly on my Windows XP machine? De fragmentation Scan-disk Full system scan Disk clean up Trojan checker malware remover or any other thing... And should I run all these things in Safe-mode always? I want to perform all mentioned things automatically at night. How to set schedule and What would be the best plan? For daily weekly and monthly? I've 300 GB SATA HDD with 6 partition. I would like to know in above mentioned list: Which process should I run daily? Which process should I run weekly? Which process should I run on monthly basis How to set schedule for all in Windows task scheduler?

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  • How can I repair the boot loader on my laptop?

    - by zbalata
    I had removed my HD from a Dell laptop and accessed it with an external HD port on another computer. Though after returning it to the Dell laptop, it will no longer boot. The PC came pre-installed with Windows 7 and I do not have an installation disk. None of the contents of the original install have been removed or modified. If I use another laptop running Windows 7 to create a repair/recovery disk, would I be able to use it on my Dell to repair the boot sector? How can I repair the bootmgr? It's frustrating knowing there's a perfectly good operating system there that wont boot. Thanks for your time!

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  • How to start Windows Explorer as domain administrator [closed]

    - by Otiel
    Possible Duplicate: How do you run windows explorer as a different user? Is it possible to start a Windows Explorer with the rights of another domain user? I tried to do the following to start a Windows Explorer on my computer as my domain Administrator, but without success: Right click on C:\Windows\explorer.exe to select Run as different user, Enter the domain administrator credentials: Domain\Administrator ************ The windows explorer session only opens with my current user rights (Domain\me). The reason behind my question is that I want to change some folder rights on a domain shared disk and I need the Domain\Administrator user rights to do it. Usually, I do it by login as Domain\Administrator on the server hosting the shared disk but I would like to be able to do it from my PC, logged as my current login (Domain\me). EDIT As seen in the linked posts, it is not possible anymore on Windows Vista or 7. On Windows XP, the solution is to do: runas /user:domain\username "explorer /separate"

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  • How to define a layered model for Storage Architecture ?

    - by Berkay
    i don't have enough knowledge about storage systems but have to tell my audiences about how storage works in organization data centers. For this purpose to keep things simple, first i want to show them a layer model then from top to bottom and then i want to explore all these layers. What i mean by layered model in storage architecture? i want to start my presentation something like that, first layer can be applications, application request a data from storage and then ... ... (the topics i want to cover are file sytems, metadata,the physical implementation of storage (das, nas etc.) ... the request comes to the storage device and storage device (depends on the technology) goes through the disk and disk send back the data using iscsi protol, we can say that the iscsi protocol managing the path between... ... if you help me explain these steps layer by layer by examples and key technologies to be defined, really appreciate it. thanks.

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  • Add MS-DOS boot option to Windows 2000

    - by Ben Miller
    I've got an old laptop that is running Windows 2000 & Windows 98 in a multi-boot configuration. I need to add MS-DOS to that list of startup options. I've already added a primary partition, formatted it for FAT16 and made it bootable, and installed MS-DOS 6.22. My question is, how do I add my MS-DOS partition to the list of startup options? More information: My single hard drive has three primary partitions: 0: FAT32 Windows 2000 1: FAT32 Windows 98 2: FAT(16) MS-DOS 6.22 Currently, the boot-up screen lists Windows 2000 and Windows 98 as options, with Windows 2000 as the default choice. My boot.ini file currently looks like this: [Boot Loader] Timeout=30 Default=multi(0)disk(0)rdisk(0)partition(1)\WINNT [Operating Systems] multi(0)disk(0)rdisk(0)partition(1)\WINNT="Microsoft Windows 2000 Professional" /fastdetect C:\="Microsoft Windows 98"

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  • set up pernament ramdisk in ubuntu to not using ram when is the ramdisk empty

    - by robo
    Hi I've got 8GB RAM on my laptop running Ubuntu 12.04. I added following record to /etc/fstab tmpfs /media/ramdisk tmpfs defaults,noatime,mode=1777 0 0 What exactly it means? I have tested that I can save 4GB to ram disk at most. Why exactly 4GB? Where did the computer get this number from? And what happens when I don't use that ram disk for a while and when the directory /media/ramdisk is empty? Does it mean that my system can use whole 8GB ram? And what happens when the system runs out of ram? Will the most rarely used things be moved to swap? And should I turn of swap if I think my system will never need it? Will turning off the swap make my computer faster? And can I even remove the swap partition? And will the hibernation work correctly then?

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  • Windows 7 boot problem on a Lenovo Thinkpad Z61m 9450HAG

    - by Matt Taylor
    Hello, I recently did a full upgrade of windows 7 on my thinkpad, everything worked fine after up until the second reboot (the first reboot after some updates installed worked OK). At second reboot time the system would just black screen just before the Windows logo appears, disk/wireless/power/battery lights are all lit and the disk light is active (flickering). However, if I remove my battery and boot with just power it boots fine and quickly, and everything is OK. Any help on why this wont boot with battery plugged in is greatly appreciated - i need to take this battery out on the road/trains etc.... Cheers Matt

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  • Windows 2012 Server Hyper-V: Cannot see LAN

    - by Samuel
    I have one NIC on the machine loaded XP on the Hyper-V and had chosen the network as virtual switch. No LAN and no internet shows up on the client. Am I missing something? it used to work in 2008-R2. Details: One network card on machine (Qualcomm Atheros AR8131 PIC-E Gigabit Ethernet controller) The virtual machine hard disk is pointing to and existing XP-SP2 hard disk created using VPC 2007 The Virtual machine Network Adapter is setup as Virtual Switch to the real ethernet controller with Enable virtual LAN identification set to 2 (no other virtual machine is created in the system) After the virtual machine boots LAN shows empty in Control Panel Network Connections (this is XP client) and I also cannot access the internet. XP is showing activation prompt but as far as I know it should not disable the network! Virtual network switch is set to External

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  • Best way to restore individual folders via Time Machine after clean Lion install?

    - by A4J
    I'm doing a clean erase and install of Lion, and am looking for the best way to restore individual folders into my home directory via Time Machine. I've done a dummy run, clean Lion install, then 'browse other disks' in Time Machine, navigate to my home folder and 'restore' what I need, such as pictures/music and folders inside the .library folder (such as Mail and Keychains). However this method seems to give you odd permissions, like this: http://i43.tinypic.com/15y82v4.png Hence I wondered if anyone knows what the best method is to restore files and folders after a clean install. N.b I do not want to use the migration assistant, or 'restore OS from Time Machine' - as I specifically want to do a clean install, and just copy over what I need (some folders will be moved onto a separate disk to the OS, and some will remain on the same disk). Thanks in advance.

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