
    ARCHIVE DEVICE ADD/MODIFY

    In order to make a backup, the characteristics of the backup device must
    be known to the backup software. Enlighten/Archive allows the system
    administrator to create logical backup devices which include all the
    technical parameters required. The technical parameters for the device
    are entered only once, and when a backup/restore is made, the
    administrator must only select the logical name chosen for that device.

    This window allows the administrator to create a new backup device.

    The Raw Device name is the name of the UNIX device to which the backup
    device is attached. This may be often a tape device. For the exact names
    of the available devices on the system please check your hardware
    reference manual. The following table however, may help in determine the
    tape device names which may be on your system.

          ---------------------------------------------------
          |   SYSTEM     | Look for     | Good default bet  |
          |-------------------------------------------------|
          | Sun OS 4.1.x | /dev/rst*    | /dev/rst0         |
          | Solaris 2.x  | /dev/rmt/*   | /dev/rmt/0h       |
          | HP-UX        | /dev/rmt/*   | /dev/rmt/c201d2h  |
          | IBM AIX      | /dev/rmt*    | /dev/rmt0         |
          | SCO          | /dev/*Stp*   | /dev/rStp0        |
          ---------------------------------------------------

    The Device Type is only used to calculate the size of the backup device.
    If you know the capacity of the backup media, or if you do not want to
    use any of the given types, select a Custom type and enter the backup
    capacity yourself.

    There are two differences in the Modify window:

    + the Logical Device Name field is view-only.

    + you can use the Modify button (rather than the Add button) after
      you've made all your changes and

    + you can use the Next button to modify additional backup schedules
      if you've selected more than one backup to modify from the Add
      Device Configuration list.

    The rest of this section describes the fields and their parameters
    within these windows.

    Logical Device Name

    This field represents the common name a user will specify when
    accessing this backup device. This field is required.

    Raw Device

    This field contains the actual UNIX device name, such as /dev/rmt0.
    You can click on the select button to choose from a list of possible
    tape device names. You can also prefix the device name with its host
    name, followed by a colon (:), to define remote backup devices on
    hosts running the enld daemon.

    If, for example, you have a device /dev/rmt/0h on host athens, the
    name of the device would be:

        athens:/dev/rmt/0h

    This field is required.

    Description

    This can be a friendly name for the device or a description of the
    device. This field is required.

    Block Size

    Each type of device has a blocking factor associated with it. The
    blocking factor is the size of each data block written to the
    device. The most common blocking factor is 20 blocks; however, you
    can backup data using a blocking factor of up to 2000 blocks. This
    field is required.

    Note: Block size is O/S dependent. On Solaris 2.4, the block size is
    1024 bytes (1K).

    Device Type

    The Device Type specifies the device's capacity. This field is
    required. The following options are available:

    + Cartridge Tape
    + Reel
    + Custom
    + Raw
    + 8 MM

    Cartridge - When you click on this button, tape length and density
    descriptions are displayed. For length, click the left mouse button
    and then drag the cursor to the appropriate value: 300, 450, or 600
    feet. For density, click on QIC 24 (low) or QIC 120 (high).

    Reel - When you click on this button, tape length and density line
    descriptions are displayed. For length, click the left mouse button
    and then drag the cursor to the appropriate value: 600, 1200, or
    2400 feet. For density, click on 1600 (low) or 6250 (high).

    Custom - You can click on the Custom button to define your own device.
    You will be prompted to enter the capacity for the new device in KB.
    If you don't know the capacity or you do not wish to limit the
    device size, enter 500.

    Raw - You can click on the Raw button to quickly add an entry to the
    device list. Use this option to add a device with no capacity or a
    new piece of media. Eventually, you should re-define this storage
    device.

    8 MM - Click on the 8 MM button to define an 8mm cartridge tape
    device. You will be prompted to select the capacity of the tape. The
    options are 2GB (default) and 5GB. If neither of these options
    apply, create a Custom backup device, instead, and manually set the
    device's capacity. Or you can create a Raw device and define the
    device capacity later.
