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XX-8AC2D-06

2000

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Document:	AN-024
Order Number:	XX-8AC2D-06
Revision:	0
Pages:	1
Original Filename:	AN-024.pdf

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CHARON-VAX application note
AN-024 Transfer files to CHARON-VAX/AXP virtual SCSI disks
Author: Software Resources International

Date: 13–Nov-02

A CHARON-VAX/AXP SCSI disk image is compatible with the support of virtual disks as provided
by the VDDRIVER in OpenVMS/Alpha. OpenVMS/Alpha virtual disks provide an easy and flexible
way to transfer files (including boot system images) from the host OpenVMS/Alpha system to
CHARON-VAX/AXP and back again. The VDDRIVER is available on the HP OpenVMS Freeware
CD.
The following is an example of the use of the VDDRIVER with CHARON-VAX/AXP:

1. Install the VDDRIVER on the host OpenVMS/Alpha system. For example:
$ copy <CD drive>:[utils.virtual_disks]*.exe sys$system:
$ copy <CD drive>:[utils.virtual_disks]*.cld sys$system:
$ mc sysman io connect vda0:/noadapter/driver=sys$system:vddriver.exe
$ set command sys$system:asnvd_cld_64

2. Create a disk image with the MKDISK utility from the CHARON-VAX/AXP kit. For example:
$ mkdisk -t rz28 rz28.dsk

3. Copy this disk image with the following command to set the CONTIGUOUS attribute for the file
(the VDDRIVER only works if the file has the CONTIGUOUS attribute). For example:
$ copy/contiguous rz28.dsk dka300:[000000.disks]mydisk.dsk

To transfer data from the host system to CHARON-VAX/AXP:

1. Assign the disk image to a virtual disk device. For example:
$ asnvd_cld_64/assign/sec64 vda0: dka300:[000000.disks]mydisk.dsk

2. Mount the virtual disk on the OpenVMS/Alpha host system and copy the files that you need to this
disk. If the disk image file was just created you must initialize it before the mount:
$ mount vda0:/over=id
$ copy [.myfiles]*.* vda0:[000000]

3. Dismount the virtual disk from the OpenVMS/Alpha host system. For example:
$ dismount vda0:

4. Deassign the file from the virtual device. For example:
$ asnvd_cld_64/deassign vda0:

5. Specify the disk file name in a CHARON-VAX/AXP configuration file. For example to configure
DKA100: in CHARON-VAX/AXP using MYDISK.DSK on DKA300 in the Alpha host:
$ load virtual_scsi_disk pka_1 scsi_bus=pka scsi_id=1
$ set pka_1 container="dka300:[000000.disks]mydisk.dsk"

6. Start CHARON-VAX/AXP, mount the corresponding device and use the files.
Note: The VDDRIVER is freeware and this procedure is provided without warranty.
[30-18-024]

©2002 Software Resources International. This document is provided for information only and is not a legally binding offer.
Software Resources International reserves the right to change the product specifications without prior notice or retire the
product. The CHARON name and its logo are a registered trademark of Software Resources International.