IBM DPSS-309170 Installation Manual - Page 9

IBM storage products Auto Start Delay and Delay Start 6/12 The Auto Start Delay option (pins 3 and 4 on option block J6) and the Delay Start 6/12 option (pins 5 and 6 on option block J6) control when and how the drive spins up and comes ready in conjunction with Enable/Disable Auto Spin up (pins 1 and 2 on option block J6). If Auto Spin up and Auto Start Delay are jumpered, the spinning up of the drive is delayed by a period of time multiplied by the drive's SCSI address. If Auto Spin up is disabled, these jumpers will be ignored. Note: In the table below 'on' means a jumper is installed and 'off' means that a jumper is not installed. Model 68 pin 68 pin 68 pin 68 pin 68 pin 68 pin 68 pin 68 pin 80 pin 80 pin 80 pin 80 pin 80 pin 80 pin 80 pin 80 pin Auto Spin Up (Pins 1 & 2) off on off on off on off on off on off on off on off on Auto Start Delay Delay Start 6/12 (Pins 3 & 4) (Pins 5 & 6) off off off off on off on off off on off on on on on on off off off off on off on off off on off on on on on on Auto Start NO YES NO YES NO YES NO YES YES NO YES NO YES NO YES NO Delay Multiplier 0 6 0 12 0 6 0 12 - Disable SCSI Parity Check Place a jumper on pins 7 and 8 of option block J6 to disable SCSI Parity Checking. Enable TI-SDTR Place a jumper on pins 9 and 10 of option block J6 to enable Target Initiated Wide Data Transfer Request Negotiation and Target Initiated Synchronous Transfer Request Negotiation. Disable Unit Attention Place a jumper on pins 11 and 12 of option block J6 to prevent the drive from building Unit Attention Sense information for commands immediately following a Power On Reset (POR) or SCSI Bus Reset. Any pending Unit Attention conditions will also be cleared at POR or SCSI Reset times. IBM Technology Group Support Center Page 9 07N5612IG10