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Here you will find frequently asked questions and answers about KernSafe iSCSI SAN, please select a question that you may concern:



  • What is the recommended medium type for the storage of XenServer?


    • 1. The first recommended medium is Standard Image File device, because it supports unlimited capacity, and easy to be migrated, backup, expended and even we support continues data protection (snapshot) for this medium.
    2. The second recommended medium is Virtual Hard File device, except the capacity limitation (2040 GB), it is all the same as the Standard Image File.
    3. If you really want to use a physical device, it is also supported, just like ph...Read more

  • What is the capacity limitation of Virtual Hard Disk (.vhd) file?


    • The maximum size of VHD is 2040 GB and it have nothing to do with iStorage Server license type, it is just technology limitation.

  • How to configure Windows 7 Firewall for iStorage Server?


    • Launch Control Panel -> Windows Firewall.
    Click the Advanced settings link.
    Select the Inbound Rules tree node.
    Click the New Rule... link in actions panel or right click on the blank and select New Rule...
    The New Inbound Rule Wizard shows.
    Select Port in the Rule Type step and press the Next button.
    Select TCP and Specific local ports, type 3260 in the Specific local ports field, then press the Next button to continue.
    Select Allow the connection i...Read more

  • How to apply a free license?


    • Please follow these steps to apply a free license.
    Launch the iStorage Server Management Console.
    Select Help->Apply License, the Apply License Wizard appears.
    Select Free License and press the Next button.
    Type your user name and company name.
    Press the Finish button to finish free license applying.


  • Why after I copied some files to iSCSI disk and it looks good, but after I reboot my computer, those files are gone?


    • Please make sure the initiator has full access from the iSCSI target, you will see it in iStorage Server Management Console after initiator connected.
    As iStorage Server can be used for file sharing, we provide three level access rights, Full Access, Virtual Write and Read Only. Seems that your initiator got virtual write access, that's why you are experiencing such issue.

  • How can I update data from initiator to server’s physical storage device such as disk, partition?


    • Please first let us explain for some concepts regarding with your questions:
    1. As the Windows provide a cache mechanism so when you update the content by third party software (such as iStorage Server and other iSCSI software), the file system will not be updated immediately, so you have to restart server or remount volume, for remounting volume, please refer to:
    http://www.kernsafe.com/tech-articles/update-data-files-from-initiators-to-target...Read more

  • How can I upgrade to a new version?


    • "I have already an old version of iStorage Server used in my company, how can I upgrade to the newest version?"

    In any time, you can visit KernSafe download center to download the newest version:
    http://www.kernsafe.com/download.aspx.
    To upgrade to the newest version, please do not uninstall your old version, because uninstalling it will remove all the settings that you have made to it.
    Just click the setup cabinet executable and run it, just like first installation, the upgrade will perform automatically.


  • How can I make a tape backup (Symantec Backup Exec) through iStorage Server?


    • We provide iSCSI SPTI function that can export a tape device to client side as a local attached device, iStorage Server supports BackupExec, discard which backup software do you use, you need to limit the packet size to 65536 at the initiator side, please follow these steps:
    Open registry editor, open the key:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E97B-E325-11CE-BFC1-08002BE10318}\0000\Parameters
    please note that the 0000 ke...Read more

  • Why I got an error the IP address and port are in use?


    • "I am trialing your KernSafe iStorage Server and I'm getting the error "KernSafe iStorage service encountered an error while starting this server, please check if IP address and port are not in use""

    You have another application using the same socket port 3260, such as the other brand of iSCSI target software. Please stop it or change the bind port (iStorage Server or the another one) to a different one.

  • Why it says "chap secret given does not conform to the standard"?


    • "When I'm going to login by chap ( to have read/write access) i receive this error "chap secret given does not conform to the standard. please see system event log for more information." I'm using Microsoft initiator version 2.08"

    This indicates that the CHAP secret you specified is smaller than the minimum size (12 bytes) required by the spec.

    Please make your secret more than or equal to 12 characters and less than or equal to 16 characters.



  • Is there any size limitation in iStorage Server?


    • "I am in the process of testing your product "iStorage Server" for one of my customers. In order get a realistic picture I would like to create a 2.5 TB iSCSI target and fill it with large video files.
     
    Does the free version of your product support such a scenario or do you have a size restriction on the free version."

    The free version of iStorage Server has no restriction on size, but generally, windows file system only support 2T volume and file, so only support 2T image/partition based iSCSI target.
    If you try to use physical disk bridged device, it is feasible.

  • Why logging in to an iSCSI target can be slow sometimes?


    • It is caused by wrong IP address in portal window.

    For iSCSI target that was created with option to not inherit from global settings, please edit targets portal settings by right clicking on the target, selecting properties, switching to portal tab and changing portal IP there.

    For iSCSI targets with selected option to inherit from global settings, open settings as described above and access portal window.
     
    Then check if there is any IP address...Read more



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