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Disk device configuration object. |
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Syntax
load DKcu
DKcu.bps = bytes-per-sector
DKcu.image = "image-path"
DKcu.mapped = "on" | "off"
DKcu.product = "product-type"
DKcu.ncyl = cyls-on-disk
DKcu.read_cache = "on" | "off"
DKcu.readonly = "on" | "off"
DKcu.removable = "on" | "off"
DKcu.revision = "disk-revision"
DKCu.size = disk-size
DKcu.spt = sectors-per-track
DKcu.shared = "on" | "off"
DKcu.tpc = tracks-per-cyl
DKcu.vendor = "vendor-name"
DKcu.write_cache = "on" | "off"
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Description
The DK object presents a disk device configuration to the virtual machine. Each disk device must be loaded using the load command above. It is important to note that a PK storage controller must be loaded before adding disk devices. It is possible to connect both container files and physical disk devices to the virtual machine.
To connect a container file to the virtual disk device, specify a host system file path for image-path. To specify a physical disk device, the image-path must to be specified in one of two ways.
To access a physical disk device using the Microsoft Windows disk driver, ensure the device is available in the Device Manager and specify image-path as "\.\\PhysicalDriven", where n is the disk device number. The image-path can be determined with the help of the Host Device Check utility in the CHARON-AXP/SMA(+) Management Menu.
Alternatively, the disk device can be presented directly to the guest system. Please see the documentation for the GK device object for further details.
The following table describes the more advanced configuration members of the DK object. They are typically determined automatically by the virtual machine.
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| title | Advanced DK Object Members |
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| Member | Type | Description |
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| bps | integer | Defines the number of bytes per sector. | product | string | Sets the disk device product type (e.g. "RZ1HD"). | | ncyl | integer | Defines the number of cylinders on the disk. | | revision | string | Defines the disk device revision string. | | size | integer | Specifies the total size of the disk device, in bytes). | | spt | integer | Defines the number of sectors per track. | | tpc | integer | Sets the tracks per cylinder. | | vendor | string | Defines the disk device vendor string (e.g. "COMPAQ"). |
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The advanced options are not typically recommended for inexperienced users. These options are used primarily to support installation of early versions of Digital UNIX. |