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Syntax for loading KZPBA storage adapter:
load KZPBA <name> |
Example:
load KZPBA PKA |
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In AlphaStation 400 configuration use the following syntax for KZPBA storage adapter loading:
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The adapter instance name ("PKA" in the example above) is used then for parametrization, for example:
set PKA container[602]="C:\My disks\/Mydisks/vms_distributive.vdisk" |
The numbers in the square brackets represent SCSI ID and LUN of the devices on the virtual KZPBA SCSI bus.
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Configuration parameters
The KZPBA PCI SCSI adapter emulation has the following configuration parameters:
scsi_id
| Parameter |
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Value
| scsi_id | ||
| Type | Numeric | |
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| Value | Specifies SCSI ID of KZPBA PCI SCSI Adapter in a range 0..7 By default the "scsi_id" configuration parameter is set to 7. Example:
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host, port
| Parameter | host, port | |||||||
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| Type | Text String | |||||||
| Value | These parameters are used in SCSI cluster configurations.
By default the "host" and "port" configuration options are not specified. Syntax:
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where: connection_number = remote_scsi_id * 100 + lun_id Example:
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Anchor container container
container
| container | |
| container |
| Parameter | container[N] N is "XXYY" number, |
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where:
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| Type | Text String |
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| Value | Possible values of the parameter are strings in one of the following forms: |
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DevID addresses the target physical disk by its WWID (hexadecimal 128-bit identifier assigned to the disk drive by its manufacturer/originator).
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Mapping to iSCSI disks.
iScsiTarget addresses the disk by its iSCSI target name.
LUN specifies LUN on connected iSCSI disk.
Example:
set PKA container[200]=”\\.\PhysicalDrive(iScsiTarget= iqn.2008-04:iscsi.charon-target-test1, LUN= 1)” |
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"\\.\Scsi<N>:<X>:<Y>:<Z>"
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The values of N, X, Y and Z can be collected using special utility "Host Device Check" included in the CHARON distributive - or manually by investigation of the devices connected to CHARON host in the "Device Manager" applet.
| Parameter | Description |
|---|---|
| N | A logical number assigned by host operating system (Microsoft Windows) to logical or host’s physical storage resource such as physical SCSI HBA |
| X | An internal SCSI bus number (usually 0) on host’s physical SCSI HBA |
| Y | A SCSI ID of physical SCSI target device attached to host’s physical SCSI HBA |
| Z | A logical unit number inside physical SCSI target device attached to host’s physical SCSI HBA |
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Mapping to CD-ROM device.
Example:
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Mapping to an ISO file for reading distribution CD-ROM image.
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Mapping to the file representing a physical disk of the HP Alpha system (disk image).
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Mapping to the file representing the tape (tape image).
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Mapping to some other type of drive, for example magneto-optical drive.
Example:
set PKA container[300]=”\\.\Z:" |
This parameter is initially not set, thus creating NO storage elements on the controller. |
media_type
| Parameter | media_type[N] N is "XXYY" number, |
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where:
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| Type | Text String | |
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| Value | Instructs CHARON-AXP to use the supplied value as the PRODUCT field in the SCSI INQUIRY data returned to a software running on virtual HP Alpha system in response to SCSI INQUIRY command. If not specified, CHARON-AXP attempts to guess the SCSI INQUIRY data based on virtual SCSI device type and underlying container (which is specified in the corresponding container configuration parameter). Initially is not specified. Example:
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removable
| Parameter | removable[N] N is "XXYY" number, |
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where:
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| Type | Boolean | |
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| Value | When set to "true", the removable configuration parameter instructs CHARON-AXP to report the corresponding virtual SCSI device as removable. By default the removable configuration parameter is set to "false". Example:
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geometry
| Parameter | geometry[N] N is "XXYY" number, |
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where:
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| Type | Text String |
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| Value | This formatted string value specifies the explicit geometry of the disk storage element. This parameter is not applicable to tape storage elements. The string format is <X>”/”<Y>[“/”<Z>] or <X>”,”<Y>[“,”<Z>] |
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[“,”<B>] where:
If this parameter is not set, CHARON-AXP will configure the geometry based on the most probable disk type. Initially not set.
The syntax described above is applicable only to disk storage elements. If the container is a tape image, the following format is used instead: Syntax:
where:
Example: |
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use_io_file_buffering
| Parameter | use_io_file_buffering[N] N is "XXYY" number, |
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where:
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| Type | Boolean | |
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| Value | When set to "true", instructs CHARON-AXP to enable host operating system I/O cache on reading/writing operations.
When enabled, host operating system I/O cache may significantly improve I/O performance of the virtual system. At the same time maintaining I/O cache requires additional host resources (CPU and memory) which may negatively affect overall performance of the virtual system. Initially is set to "false". Example:
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Empty disk images are created with the "MkDiskmkdskcmd" utility utility. Tape images ("*.vtape") will be created automatically if they don't exist (no utility needed).
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| Info |
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The virtual KZPBA storage controller examines the file extension Configured physical devices or tape/disk images that do not exist on the host system will, in general, cause OpenVMS/Alpha to report the unit offline. In some cases this will result in a VMS BUG CHECK. In this case, an error message will be written to the log file. |
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