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Backup on network

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    #1

    Backup on network

    Simple question - hopefully a simple answer ;-)

    If I install database app on a server, with shadowed databases on other networked PCs, do backups need to be made on the server? i.e. If someone runs database backup from one of the network PCs I am assuming that it will not create a backup on the server.

    Also, when installing on network PCs using the "dummy autoexec" method described in the Alpha 5 help files, do I need to install runtime first?

    Sorry about dumb questions, but my experience is web based apps - I know nothing about LAN.
    If computers are so clever how come someone as dumb as me has to tell them what to do?
    Tags: None
    #2
    Re: Backup on network

    Just a thought - the network only has 8 workstations, with never more than 5 connected at any one time - do I even need to use the shadowed method, or is it better for everyone to run directly from the database on the server?
    If computers are so clever how come someone as dumb as me has to tell them what to do?

    Comment

      #3
      Re: Backup on network

      Sooty,

      Unfortunately, you provide to less information to give a good answer to your question. Your question rises more questions.....
      I will give it a try though!

      Basically, a backup is completely independent from Alpha. If you have a network, it is likely you also have separate backup software and devices that take care of this. If that is the case, it does not matter where the backup is written, as long as you are able to restore it with the same software and devices.
      Obviously, you should not store any backup on the same drive that the original is. Doing that, on case of crash you would loose both original �nd backup, so that would not be wise.

      If you use shadow databases, data is stored on the server, only certain information is stored on the client.
      In this case, often you have thick clients, which will ideally also need a backup which can be restored in case of crash or else. Main data however is stored at the server and will be backupped by the server backup software.

      Should you NOT have any specific backup feature, then you would use the build in Alpha backup function, which allows you to use an UNC path and lets you store the path for future use.
      In this way, you are able to backup your files from the server to the specified UNC path.

      If you have only a few clients, you could also think about using thin clients instead of thick ones, and work with Terminal Services. This would require a more robust and powerful server and special licenses for terminal server to use more then 1 client. But the advantages are, that there will be no traffic else the ANSI from server to thin client, and you will not have to make backups from clients. Furthermore, security is served as there is no information available in physical sense on clients which could be stolen on theft of the client itself.

      There have been done tests that would suggest that you can run up to 10 - 15 clients on one server, depending on the capacity of the server ofcourse.

      As you see, there are lots of issues to think about when answering your question, and the information you would need is simply not in the question.
      However, I hoped to have given you enough to think about.

      Regards,

      Comment

        #4
        Re: Backup on network

        Originally posted by Sooty57 View Post
        Simple question - hopefully a simple answer ;-)

        If I install database app on a server, with shadowed databases on other networked PCs, do backups need to be made on the server? i.e. If someone runs database backup from one of the network PCs I am assuming that it will not create a backup on the server.
        With appropriate folder permissions, the backup can be from anyplace on the LAN to anyplace on your LAN, but you want to back up the data and application that is located on your server (However, backing up from the Server directly can be faster, depending upon the backup program, as data being backed up does not have to travel on the LAN).

        The shadowed databases are primarily copies of the application on the local machine that uses the data on the server. These do not need to be backed up.

        Originally posted by Sooty57 View Post
        Also, when installing on network PCs using the "dummy autoexec" method described in the Alpha 5 help files, do I need to install runtime first?
        I don't use that method, so I can't answer, but there are other ways to install the runtime and run/install the application that are more straighforward, IMHO.

        Originally posted by Sooty57 View Post
        Just a thought - the network only has 8 workstations, with never more than 5 connected at any one time - do I even need to use the shadowed method, or is it better for everyone to run directly from the database on the server?
        See my tips why Network shadowing does not necessarily improve speed. You might also want to look at Record Locking 101 on the same page
        Regards,

        Ira J. Perlow
        Computer Systems Design


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