Jumpers: Quantum Atlas 10K Hard Disk Drive User's Guide
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Jumpers: Quantum Atlas� 10K Hard Disk Drive User's Guide
The Quantum Atlas 10K PCB has two jumper
locations provided for configuration options in a system. The following
features are jumper selectable:
-
TERMPWR
-
SCSI ID
-
Write Protection
-
Spin Up
-
Remote LED displays
Note: The disk drive does not support on-board
SCSI termination.
Figure 1 - Jumper Locations for the Quantum Atlas
10K Hard Disk Drive
SCSI ID Selection on 28 Pin Secondary Option
Connector
1=Jumper 0=No Jumper
|
SCSI ID
|
Pin Pair 7/8
|
Pin Pair 5/6
|
Pin Pair 3/4
|
Pin Pair 1/2
|
|
0
|
0
|
0
|
0
|
0
|
|
1
|
1
|
0
|
0
|
0
|
|
2
|
0
|
1
|
0
|
0
|
|
3
|
1
|
1
|
0
|
0
|
|
4
|
0
|
0
|
1
|
0
|
|
5
|
1
|
0
|
1
|
0
|
|
6
|
0
|
1
|
1
|
0
|
|
7
|
1
|
1
|
1
|
0
|
|
8
|
0
|
0
|
0
|
1
|
|
9
|
1
|
0
|
0
|
1
|
|
10
|
0
|
1
|
0
|
1
|
|
11
|
1
|
1
|
0
|
1
|
|
12
|
0
|
0
|
1
|
1
|
|
13
|
1
|
0
|
1
|
1
|
|
14
|
0
|
1
|
1
|
1
|
|
15
|
1
|
1
|
1
|
1
|
Delay Spin (DS), Stagger Spin (SS)
Quantum Atlas 10K drives have
three Spin Up modes:
Option 1: Spin up immediately
when power is applied:
Verify that no jumper is installed
across pin pair 11 / 12 (GND / Spin Delay) of the Secondary Option connector.
Option 2: Spin up after a
predetermined delay following power on:
Install jumpers across pin pair
11 / 12 (GND / Spin Delay) and across pin pair 21 / 22 (GND / Stagger Spin)
on the Secondary Option Connector. Set the delay parametes with the MODE
SELECT command, Quantum (Vendor) Special Function Control Page (39h). The
delay is equal to a user specified multiplier, multiplied by the numerical
SCSI ID of the drive. This will give a staggered spin-up in multiple
drive installations.
Option 3 Spin up on START STOP UNIT
command:
Install a jumper across pin pair
11 / 12 (GND / Delay Spin) and remove any jumper from pin pair 21 / 22
(GND / Stagger Spin), if a jumper is installed there, on the Secondary
Option Connector.
Enable Narrow Mode (Force 8)
Wide Data Transfer (WDTR) negotiations
can be limited to 8-bit responses either by setting the Force 8 bit of
the Quantum (Vendor) Special Functions Control Page (25h) of the MODE SELECT
command (15h) to 1, or by installing a jumper on pin pair 23 / 24 of the
Secondary Option Connector.
Remote Busy and Fault Displays
Busy and Fault status of the drive
can be monitored remotely by connecting a remote (external) Busy and/or
remote Fault display LEDs to the appropriate pins on the 12-pin Option
Connector or the 28-pin Secondary Option Connector.
Remote Busy LED
On the Option Connector, connect
the cathode side of the Remote Busy LED to pin 8, Busy Out. Connect
the anode side of the LED to pin 11, +5V.
On the Secondary Option Connector, connect
the cathode side of the Remote Busy LED to pin 18, Busy Out. Connect
the anode side of the LED to pin 17, +5V.
Remote Fault LED
On the Option Connector, connect
the cathode side of the Remote Fault LED to pin 2, Fault LED. Connect
the anode side of the LED to pin 11, +5V.
On the Secondary Option Connector, connect
the cathode side of the Remote Fault LED to pin 9, Fault LED. Connect
the anode side of the LED to pin 17, +5V.
Write Protection
To configure Write Protection
for the drive, install a jumper across pin pair 19/20 on the Secondary
Option Connector. To disable Write Protection on the drive, remove
the jumper.
SCSI Bus Termination Power Jumper (TP)
To ensure that there is a sufficient
level of power along the entire SCSI bus, Quantum Corporation recommends
that all devices on the SCSI bus supply TERMPWR (if they are capable).
SCSI devices are protected by a diode or similar semiconductor to prevent
back flow of the terminator power when more than one device supplies this
power.
Configure the drive to provide TERMPWR
by installing a jumper across pin pair 27 / 28 on the Secondary Option
Connector located on the front of the drive.
On-board Busy and Fault Displays
The drive has on-board green 'Busy'
LED and a yellow 'Fault' LED.
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