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  • large RAID 10 vs small RAID1

    - by user116399
    The machine will store and serve millions of small files (<15Kb each), and all those files require a total storage space of 400G Considering the exact same SATA hard drives maker and models, on the exact same environment (OS, cpu, ram, raid controller, etc...) which one of the setups bellow would be faster? A) RAID 1 with 2 drives of 2T each, making up total storage of 2T B) RAID 10 with 4 drives of 2T each, making up total storage of 4T [EDIT]: I'm aware RAID10 is faster than RAID1. The larger the disk, at least in theory, the longer will take to do seeks/writes. So, will the performance gain of RAID10 will be outweighed by the "drag" caused the larger disk area when seek/write operations happened?

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  • "The requested operation could not be completed due to a file system limitation" 3202

    - by user46529
    I backup SQL Server database and it fails BACKUP DATABASE dd TO DISK = '\backupServer\backups\dd.bak' WITH COMPRESSION, CHECKSUM, NOFORMAT, INIT , BlockSize = 65536 , BufferCount = 2200 , MaxTransferSize = 4194304 The backup size is 3TB and I have 6TB free space on bacup server. I am using backup parameters per SQLCAT whitepaper. Everything works ok when I backup to local HDD and it always fails when I backup to network share. After about 6 hours. Can't find why. Thank you. Yes. The backup over the network is fastest and saves me 3Tb of local disk space :) Thanks for pointing to the memory issue. I left 4Gb to OS and it worked!

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

    - by Sergio
    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.).

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  • "Device not ready" on a network share in Windows 7

    - by user60689
    I have two computers C1 and C2 runing Windows 7 and both of them are members in a domain. On C1 I have an USB hard-disk which I shared for the users U1 and U2 giving them Read-Only permissions on the entire drive. However, even if I can see and browse the hard-disk localy (IOW from C1), from the other computer (C2) where I'm logged with U1, trying to access the C1's shared device, the C2's Windows 7 throws an error saying "Device Not Ready". Why? How can I fix this? PS: Tried to un-share and re-share again. No luck.

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  • ubuntu boots into gnu grub 1.99

    - by greenish
    I've tried set root=(hd0,2) chainloader +1 boot set root=(hd0,2) linux /boot/vmlinuz... and the loopback (loop0) /ubuntu/disks/root.disk command etc. When I try the boot command it tells me there's no kernel and when I boot Win7 (it's a dual boot) the root.disk says 0kb. nothing boots from the live usb I've made and I've tried to use programs to mount the partitions to no effect - they only show me what's on my windows file drives. I've got some really important docs on the linux harddrive I need to get to. any ideas?

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  • What are my options for booting OSX 10.6 when my DVD drive is broken?

    - by Kev
    I'm about to completely re-pave my Mac Mini but the DVD drive has died on me which means I can't boot from the installation media. I know I can boot from a USB stick but I don't have one available, what are my options given the following hardware at hand? Netgear ReadyNAS Duo NAS (NIC or USB only, no Firewire) USB HDD (no Firewire) I've ripped an ISO of the installation disk, can I somehow get the Mini to boot from this image using one of the above? If I decide not to re-pave but just upgrade, can the Mac be upgraded just using an OSX 10.6 ISO image on its disk?

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  • Raid 5 scsi fault

    - by HaLaBi
    I have no much knowledge about servers and I was looking all day around the internet about finding a solution to my raid 5 problem. All of a sudden two disks failed. The server won't boot (HP Proliant, windows 2003 R2, very old maybe 10 years old). I know that if one disk is faulty then I can add a new disk and rebuild it and things will be fine, the problem is two went faulty :( is this normal? two at the same time? is there any other thing I can do and I am not aware of? other than taking them out and reinserting them back? Windows won't boot. The Array menu shows that disks 0 and 4 are "Missing". Any other tricks or things to do? It is important because for some unknown reason the back up job did not work for a month and I just found out, so I need to make these raid 5 back online again.

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  • How to access both partitions on a bootable USB flash drive in Windows

    - by Maccyjam
    I have a 16GB USB Flash Drive that is partitioned into two different sizes. The first partition contains a bootable version of Ubuntu, the second partition is for general saving of files. Windows will only recognise the first partition. I have tried using Bootice but this breaks the bootable partition. Disk Management recognises the second partition but does not allow me to do anything with it. Is there a way to make both partitions accessible by Windows and keep the USB disk bootable?

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  • Backup folder on sometimes attached external usb harddrive

    - by ctrler
    My girlfriend no longer has space her laptops drive to store her photos. The drive she has now is 750GB, so to go to a bigger drive would be expensive, as there isn't many 1.5tb 2.5 inch 9.5mm hdd on the market (as of now, there is only one). Because of that, I am thinking of moving her pictures to a cheap external usb hdd. As of now, I'm automatically backing up her important folders (My Documents, Pictures, etc.) using Windows 7 default backup software to a network drive. My problem is that I don't know of a good solution to automatically backup a folder residing on an usb disk. The usb disk won't be attached to the computer all the time, so I can't just treat it as a normal backup folder. Sometimes the backup would run and the folder would not be there! Anyone knows any software or methodology to backup folders on external usb hard drives that are not always present? Thanks

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  • Enlarge partition on SD card

    - by chenwj
    I have followed Cloning an SD card onto a larger SD card to clone a 2G SD card to a 32G SD card, and the file system is ext4. However, on the 32G SD card I only can see 2G space available. Is there a way to maximize it out? Here is the output of fdisk: Command (m for help): p Disk /dev/sdb: 32.0 GB, 32026656768 bytes 64 heads, 32 sectors/track, 30543 cylinders, total 62552064 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000e015a Device Boot Start End Blocks Id System /dev/sdb1 * 32 147455 73712 c W95 FAT32 (LBA) /dev/sdb2 147456 3994623 1923584 83 Linux I want to make /dev/sdb2 use up the remaining space. I try resize2fs /dev/sdb after dd, but get message below: $ sudo resize2fs /dev/sdb resize2fs 1.42 (29-Nov-2011) resize2fs: Bad magic number in super-block while trying to open /dev/sdb Couldn't find valid filesystem superblock. Any idea on what I am doing wrong? Thanks.

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  • Windows 7 stopped booting

    - by jstawski
    I have a laptop which after shutdown it stopped booting. I tried repair, safe mode, and even start with Windows 7 Installation. The screen just goes blank with a mouse pointer that I can move around. I removed the harddrive from the laptop and connected it to my desktop using an External HD casing. The computer recognizes the disk, but it seems like it can't read it. If I go to My Computer it shows up, but it doesn't display usage information. When I double click on the drive it sits there as if it was loading something and eventually shows "G:\ is not accessible. The parameter is incorrect." Disk Management and Diskpart also take forever to load and when it does it shows the drive. My question, do you think this is a hardware problem or some corrupted sector? How can I try to fix the drive without formatting it? Thanks...

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  • My new hard drive doesn't have rights on my old one?

    - by Allan
    Until recently I had a 1 TB hard disk with Windows 7 on it, I have bought myself a SSD, removed the old harddisc and installed Windows 7 on my new one. After that I put back the old hard disk, and formatted it, now I could use that as backup and to keep files on. Nice, right? Well I was updating .Net framework through Windows update, when it stalled. I noticed some space was used on one of the drives on my secondary 'previously primary' hard disk. Apparently it was the .Net framework, trying to save some temporary files on my secondary disc, because it was the one with the most space. It was like it didn't get access. I cancled the installation and rebooted the computer. Now wanting to remove the temporary folder on my secondary harddisk. It told me. "You don't have access by SYSTEM", I don't understand, my user is administrator, its the only user there is and at the same time I can remove and delete any other folder on that drive. I'm gonna go a little pseudo here. But it feels as if the computer treats the old harddisk as protected from tampering by the new SSD. Also, I feel I should mention, they are both listed as primary, ... primary 0 and primary 1. Both using SATA cable. My old hard drive was partioned into 3 drives. 2 of them said the current owner was 'Administrator/myPCname' and the third one said the current owner was 'SYSTEM' I changed them all into the only one that I could pick from the list, which is my user since the 'Administrators/myPCname' wasn't exactly wrong.. could it be that they were somehow still attached to the old OS?.. the fact is I named my computer the exact same thing as it was called before installing a new windows.. so I can't really tell if its an old ownership or not. Also.. I'm currently logged in as 'myname' and I'm administrator.. now trying to delete the previously mentioned files.. it says 'you need access from 'myname' – and it can't delete.. That seems really messed up, I mean I'm logged in as the name it wants me to use. Is there maybe someway I could reset all the users on my computer? Or create some default? I don't know – I just want it to take a form I have always known, from a standard Windows point of view.

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  • SDcard /dev/sdb2 is apparently in use by the system; will not make a filesystem here

    - by user171223
    I divided my sdcard into 2 partitions, but It got an error and couldn't create a new partition. Error: /dev/sdb2 is apparently in use by the system; will not make a filesystem here! My /dev/sdb was not mounted, and the output of command lsblk was: cxphong@cxphong:~/Desktop$ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sr0 11:0 1 1024M 0 rom sda 8:0 0 465.8G 0 disk +-sda1 8:1 0 118.8G 0 part +-sda2 8:2 0 147.7G 0 part /media/DATA +-sda3 8:3 0 137.1G 0 part +-sda4 8:4 0 1K 0 part +-sda5 8:5 0 1023M 0 part [SWAP] +-sda6 8:6 0 61.2G 0 part / sdb 8:16 1 3.7G 0 disk +-sdb1 8:17 1 70.6M 0 part +-sdb2 8:18 1 3.6G 0 part +-sdb1 (dm-0) 252:0 0 70.6M 0 part +-sdb2 (dm-1) 252:1 0 3.6G 0 part I couldn't delete /dev/sdb1 (dm-0) & /dev/sdb2 (dm-1). What are they?

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  • Is it possible to boot from internet?

    - by Calmarius
    Let's assume the following situation: you have a computer with empty hard disk, and you don't have a CD, floppy, pen drive nearby to boot the computer from. But you have connection to the Internet. Modern computers support network booting using PXE, but I haven't found anything regarding booting via the internet. So, is it possible to use PXE to load an image from the internet and boot it? By having a running system (even a minimal Linux) in RAM, it should be possible to install it on the hard disk, and build up a working system from here.

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  • Corrupted files, hard drive test?

    - by all-R
    Hi guys, I'm currently on a macbook with a 1TB external hard drive connected trough a USB hub wich is connected on my macbook. The problem is, my disk, wich is partitioned in 2 (one HFS+ and one NTFS) keeps getting corrupted, recently it was my HFS+ partition, I could not repair it using the Apple's Disk utility, but was able to backup my files. Is it synonym that my hard drive is failing? Is it because of my USB hub? I also keep all my iTunes library on my external HD (HFS+ partition), and did a lot of transfer lately, adding files, removing etc. the last time, my partition got corrupted after a lot of deleted items. If anybody has an idea of what to check first, what could cause the problem, I would appreciate it :) Thanks!

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  • User WinWget to keep web site alive in a Windows Server 2003

    - by Menelaos Vergis
    I have a site that must stay alive due to a service that runs and check a directory for changes. The site is running in IIS at a Windows Server 2003 and the solution I came up it that I will Schedule a task that requests the home page every 5 minutes. I am sure that this way the site will stay alive almost all the time. I have downloaded Wget from Wget from Windows and I have installed it at my windows server 2003 but I don't know how to use it in order to ping the server but not download anything. Since I want to use this forever I don't want to save anything on the disk, can you provide me with the command that pings a web page but don't save anything on the disk?

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  • Black screen with cursor after BIOS screen

    - by Radio
    Here is a weird one, Got computer with Windows XP. It's getting stuck on a black screen with cursor blinking. What did I do: - Boot from installation CD (recovery option - command line): chkdsk C: /R copy D:\i386\ntdetect.com c:\ copy D:\i386\ntldr c:\ fixmbr fixboot Chkdsk showed 0 bad sectors and no problems during scan. dir on C:\ shows all directories and files in place (Windows, Program Files, Documents and Settings). BIOS shows correct boot drive. Still does not boot. Not sure what to think of. Please help. UPDATE: Just performed these steps: Backed up current disk C: (without MBR) using True Image to external hard drive Ran Windows XP clean installation with deleting all partitions and creating new one. Hard drive booted fine into Windows GUI installation!!! Then: I interrupted installation. Booted from True Image recovery CD and restored archive of disk C to an new partition. Same issue with black screen.

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  • unable to format external drive to HFS+ for Mac

    - by dtlussier
    I have an external hard drive (1 TB Western Digital) that is currently formatted as FAT32 and I want to reformat it to a single partition of HFS+ for my Mac. I realize that I can read FAT32 from my Mac but want HFS as it has other feathers like permissions that I'd like to have. I have tried using Disk Utility to format the drive as I have done in the past, but when I go through the process it fails and throws out an error stating that it is unable to reformat the drive to HFS. What might be the reasons that this could happen? Are there any diagnostics I could run on the physical disk to check if it is running well?

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  • ESXI 4.0 Slow response in opening anything accross the network on a Virtual Server running Win2008

    - by user40944
    Hi I recently installed a HP ML350G6 Server with Windows Small Business Server 200864bit, Exchange 2007. The server was running fantastically and we transferred all user data onto the new server and no problems for 2 weeks! We then installed SQL2008 and transferred the accounts package onto the server and this is where the problems started. Users are now complaining to open a work document can take 2 minutes and the same with regard to anything else. The server itself seems fine, the virtual server seems fine! No disk performance problems (doesn't go above 50% unless i really copy lots of things), no memory, (12Gb only using 7Gb) cpu (usage is low average about 15%) etc on both the VM and in Windows Task manager. I have made sure disk caching is enabled on the raid controller (which made no difference). Network cards are running 1Gb and plugged into HP GB switch. Please help!

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  • How can I use target mode in Linux with USB?

    - by dash17291
    Kernel 3.5 introduces: This release includes a driver for using an IEEE-1394 connection as a SCSI transport. This enables to expose SCSI devices to other nodes on the Firewire bus, for example hard disk drives. It's a similar functionality to Firewire Target Disk Mode on many Apple computers. This release also adds a usb-gadget driver that does the same with USB. The driver supports two USB protocols are supported that is BBB or BOT (Bulk Only Transport) and UAS (USB Attached SCSI). BOT is advertised on alternative interface 0 (primary) and UAS is on alternative interface 1. Both protocols can work on USB 2.0 and USB 3.0. UAS utilizes the USB 3.0 feature called streams support. http://kernelnewbies.org/Linux_3.5 I have an Arch Linux with kernel 3.5.3-1 and wanna try out this feature.

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  • Configurarion of Alert on Windows Server 2003

    - by Ferre06
    I'm trying to configure an alert on low space on disk in Windows Server 2003, I already followed this step by step tutorial of microsoft. I try to execute a bat file created by me, located on the home folder of the user I'm using. I seted to trigger when the free space is below 6 GB when the disk have lower free space than 6 GB, the "Sample data interval" is the default (5 seconds). The problem is that the alert isnt triggered. And another thing, the user that is seted for the alert isnt the root user, but It have administration privileges. Thanks in advance

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  • Cloning Fresh Windows 7 with external HDD, DVD or CDs?

    - by hhh
    I want to create Windows installation disk (not necessarily CD) from my Windows 7 Pro laptop, not sure what it actually means here. The material is about 50-60GB, requiring about 12 pcs of 5GB disk (not going to happen, too much work to use them later). I have the Windows serial on the laptop bottom and this is so-called firm -laptop (no idea what it actually mean, better warranty and some instant support thing apparently). Now how to do the clone with external material such as DVDs? how can I create mock-windows-installation medium or some real windows-installation medium? I am now not sure whether Windows offers W7 -installations medium online, well my W -peer mentioned some MSDAA -something. Perhaps related Cloning Fresh Windows 7 -fsed HDD to Linux Server because having no external HDD or disks for the Backup

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  • Why sizes are different, and what do they mean?

    - by Ramy
    I have a 1 TB hard drive that consists of one NTFS partition which I use to back up my data (no operating system). The size of all the data in it is : 726 GB, size on disk: 728 GB, and the used space when I check the properties is: 731 GB. There's a 5 GB difference between the size and the used space. Why is that huge difference there? What's the difference between these sizes? (size, size on disk, and used space) Is there a way to calculate the difference, and be sure the HDD is not messing around? Is that normal?

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  • After installing Windows 8, boot hangs before BIOS setup

    - by Joe Purvis
    I have an Alienware M15x, 940MX processor, 16 GB RAM, 512GB M4 SSD, and I was running Win7 64bit. I backed up the disk and ran Win 8 setup. Setup appeared to go well through multiple reboots. After the last reboot, it simply stopped after POST at "Press F2 for bios setup". I have tried powering off, reducing RAM to one stick, removing MOS battery. Now, it gets to the screen with "Press F2 for setup" and "Press F12 for boot options". If I press F2, I get a single beep only. If I press F12, nothing. I cannot get into the BIOS to change boot options to boot from another disk and restore. I do have the latest BIOS. I am going to try replacing the CMOS battery, but I don't think that is likely to help. The computer has been fast and very reliable until now.

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  • Replacing a non-failing drive in a RAID-0 array

    - by TallFurryMan
    I have a Windows 7 machine booting on a RAID-0 pair of 500GB disks, controlled by an ICH9R. One of those was indicating an end-To-end SMART failure, so I added a spare disk as a temporary workaround, before receiving another to replace the failing one. The RAID-0 rebuilt on the spare and dropped the failing one from the array, as expected. Now that I received the new drive, what are my options to reintegrate it in the array? My first thought was to simply clone the temporary disk to the new one while the array is offline, but shouldn't there be a way to force a second rebuild, just as if the temporary drive had a warning, and drop that temporary from the array?

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