HP Surestore Disk Array 12h System Administrator's Guide for HP-UX, MPE, and W - Page 147

Changing SCSI Settings, Changing the Controller SCSI ID, type

Page 147 highlights

MPE Using the ARM Command Line Utilities for MPE Performing Disk Array Maintenance Tasks Changing SCSI Settings The SCSI settings control the transfer of information over the SCSI channel connecting the host and the disk array. The default SCSI settings listed in Table 21 have been chosen to work with all supported SCSI adapters, and in most cases should not be changed. NOTE! Before changing any SCSI setting, you should understand what the SCSI setting does, and what effect changing it will have on disk array operation. Be aware that using an incorrect SCSI setting may make it impossible for the host and disk array to communicate properly. In this case, it will be necessary to use the disk array control panel to return the SCSI setting to its original value to reestablish communication. To change SCSI settings, type: arraymgr { -W | -T | -P | -m | -r } {on|off} Changing the Controller SCSI ID Changing the SCSI ID directly impacts the operating system's ability to access the disk array. Before performing this task, check your operating system documentation for information on how to change the SCSI ID of a disk subsystem. To change the controller SCSI ID, type: arraymgr -C {X|Y} addr addr is the new address (0 - 15) for the indicated controller 147

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Using the ARM Command Line Utilities for MPE
Performing Disk Array Maintenance Tasks
147
MPE
Changing SCSI Settings
The SCSI settings control the transfer of information over the SCSI channel connecting the host and the
disk array. The default SCSI settings listed in
Table 21
have been chosen to work with all supported SCSI
adapters, and in most cases should not be changed.
NOTE!
Before changing any SCSI setting, you should understand what the SCSI setting does,
and what effect changing it will have on disk array operation. Be aware that using an incorrect
SCSI setting may make it impossible for the host and disk array to communicate properly. In this
case, it will be necessary to use the disk array control panel to return the SCSI setting to its
original value to reestablish communication.
To change SCSI settings, type:
arraymgr { -W | -T | -P | -m | -r } {on|off} <array-id
>
Changing the Controller SCSI ID
Changing the SCSI ID directly impacts the operating system’s ability to access the disk array. Before
performing this task, check your operating system documentation for information on how to change the
SCSI ID of a disk subsystem.
To change the controller SCSI ID, type:
arraymgr -C {X|Y} addr
<array-id
>
addr
is the new address (0 – 15) for the indicated controller