DISK-MM

DISK-MM.

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Description

The DISK Media Maintenance program is used to format, initialize and verify SCSI disks connected to the ND-100 SCSI host adaptor.

Target Devices

The program is designed to handle the

• Micropolis 1375 SCSI disk drive
• CDC EMD 97201 SCSI disk drive

(valid for DISK-MM-B00). From ND-210523I program description: DISK-MM "is now able to format SCSI disks not delivered by ND".

Commands

>SELECT-DEVICE <Adaptor> <Id number>

This command will select a device for use by other commands. Commands that uses a device for operations will ask for it if it is not defined by this command.

Legal answers for adaptor are:

• Adaptor name (ADAPTOR-n, n=1:4).
• Adaptor number (1:4).
• Logical device number for adaptors data field (2202B:2205B).
• Hardware device number for adaptor (144300B, 144400B, 144500B, 144600B).

Legal answers for ID numbers are 0:7. ID number 7 is normally the SCSI host adaptor, and ID 0 is normally equivalent to "DISC-SCSI-1" which is the boot disk.

The default adaptor is "ADAPTOR-1" or the last selected adaptor, and the default ID is "0" or the last selected ID number.

>CONVERT-DISK-ADDRESS <Address type> <Address>

This command will convert a disk to different address modes and and numeric systems.

The address type could be "Media", "Logical-SINTRAN" or "page".

Media address

A media address is the address used on basis of the disk drives sector size.

Logical-SINTRAN

A logical-SINTRAN is the address used on basis of SINTRAN's block size, which always is 1024 bytes/sector.

Page

A page address is the address used on basis of SINTRAN filesystem's block size, which always is 2048 byte/sector.

>FORMAT-INITIALIZE

Formats and initializes the disk.

Special for Micropolis 1375:

Before format starts, MODE-SENSE default page 3 and 4 is set to current, and cylinder skew and track skew is optimized.

>INITIALIZE

Prepares the disk for use under SINTRAN.

>LIST-DISK-INFORMATION

This command will print out various static and dynamic information concerning the selected disk.

>LIST-PARAMETERS

This command will print out the setting of all parameters available in the command "SET-PARAMETERS".

>LIST-REASSIGN-TABLE

This command will print out all sectors reassigned with the command "REASSIGN". The sectors is listed in historical order.

>LIST-REFRESH-TABLE

This command will print out all sectors refreshed with the command "REFRESH-DATA". The sectors is listed in historical order.

>REASSIGN <Media address>

This command will reassign one single sector and its data on the disk to a different physical area, but to the same logical area.

>REFRESH-DATA <Media address>

This command will try to read one sector and write it back trying to cure temporary parity errors.

>SET-PARAMETERS <Parameter> <Value>

>VERIFY <From> <To>

Data verification. The addresses are given in media blocks. Default range: <0, LastBlock>.

See also

• ND-DMM

Known versions

B00

found on ND-210523G

B01

found on ND-210523H

C01

mentioned on the ND-100 Satellite 14.16796 page.