-n

Utility uses rsh for communication.

Use when rsh is used for communication.

-r

Non-destructive testing. Testing of the disks for SCSI-3 persistent reservations occurs in a non-destructive way; that is, there is only testing for reads, not writes. Can be used with -m, -f, or -g options.

Use during non-destructive testing.

See Performing non-destructive testing on the disks using the -r option.

-t

Testing of the return value of SCSI TEST UNIT (TUR) command under SCSI-3 reservations. A warning is printed on failure of TUR testing.

When you want to perform TUR testing.

-d

Use Dynamic Multi-Pathing (DMP) devices.

Can be used with -c or -g options.

By default, the vxfentsthdw script picks up the DMP paths for disks in the disk group. If you want the script to use the raw paths for disks in the disk group, use the -w option.

-w

Use raw devices.

Can be used with -c or -g options.

With the -w option, the vxfentsthdw script picks the operating system paths for disks in the disk group. By default, the script uses the -d option to pick up the DMP paths for disks in the disk group.

-c

Utility tests the coordinator disk group prompting for systems and devices, and reporting success or failure.

For testing disks in coordinator disk group.

See Testing the coordinator disk group using the -c option of vxfentsthdw.

-m

Utility runs manually, in interactive mode, prompting for systems and devices, and reporting success or failure.

Can be used with -r and -t options. -m is the default option.

For testing a few disks or for sampling disks in larger arrays.

See Testing the shared disks using the vxfentsthdw -m option.

-f filename

Utility tests system and device combinations listed in a text file.

Can be used with -r and -t options.

For testing several disks.

See Testing the shared disks listed in a file using the vxfentsthdw -f option.

-g disk_group

Utility tests all disk devices in a specified disk group.

Can be used with -r and -t options.

For testing many disks and arrays of disks. Disk groups may be temporarily created for testing purposes and destroyed (ungrouped) after testing.

See Testing all the disks in a disk group using the vxfentsthdw -g option.

-o

Utility overrrides disk size-related errors.

For testing SCSI-3 Reservation compliance of disks, but, overrides disk size-related errors.

See Testing disks with the vxfentsthdw -o option.