Use the following procedure to determine the SCSI option bit setting under Solaris 2.x:
| Disconnect/Reconnect | 0x008 |
| Linked Commands | 0x010 |
| Synchronous Transfer | 0x020 |
| Parity | 0x040 |
| Tagged Queuing | 0x080 |
| Fast SCSI | 0x100 |
| Wide SCSI | 0x200 |
| Fast 20 | 0x400 |
Tagged Queuing allows a disk to receive more than one command at a time and to perform the commands in an order that reduces disk latency in many applications. Tagged Queuing is implemented in Solaris 2.1.
Some SCSI disk drives may not properly implement Tagged Queuing. Disable Tagged Queuing in the driver to prevent unrecoverable failures. Add the following to the /etc/system file under Solaris 2.x:
To enable Wide SCSI under Solaris 2.3, add the following to the /etc/system file: