===============================================================================
MAXTOR MXT-1240SL DISK DRIVE (SCSI)
===============================================================================
KEY FEATURES:
* 8.5 ms avg read seek * 8-point shock mounting system
* 9.0 ms avg write seek * No sway space required
* SCSI command overhead of ~ 300usec * Self-test diagnostics
* Synchronous SCSI-2 fast transfer rates * Mechanically and thermally
to 10Mbytes/sec, with 15 byte offset isolated head-disk environment
* Disk transfer rate to 40 Mbits/sec, * Allows various sector sizes
buffer to disk * Firmware downloadable via SCSI
* Advanced buffer implementation interface
- 256 KB multi-segmented read ahead * 16-bit/35-Mhz processor
- Write stacking capability * Hard sectored zoned density
- Tagged command queueing recording
* SCSI-2 compliance * 8-zone recording format
* 88-bit ECC for high data reliability * 1,7 RLL data encoding for
with on the fly correction capability improved windows margins
* Power-down braking with positive head * Brushless in-hub spindle motor
parking and latching * Sealed HDA
* Surface mounted components with high
degree of integration for high reliability
SPECIFICATIONS:
Formatted: ................................. 1,240 Million bytes
Embedded Controller: ....................... SCSI
Spare capacity (Mbytes) .................... 7.7
Number of Disks: ........................... 8
Data Surfaces: ............................. 16
Data Heads: ................................ 15
Servo Heads: ............................... 1
Physical tracks: ........................... 37,689
Bytes per Block: ........................... 512
Sectors per track: ......................... 44-85
Physical cylinders: ........................ 2,512
PERFORMANCE (Typical):
Seek times* (ms), typical
Track to track: ....................... <1.5
Read: ................................. 8.5
Write: ................................ 9.0
Maximum: .............................. 20
Command overhead (usec): ................... ~300 **
SCSI-bus transfer rate (Mbytes/sec)
Asynchronous: ......................... Up to 5.0
Synchronous: .......................... Up to 10.0
Disk transfer rate (Mbits/sec) ............. 22.7-44.7
Average latency (ms) ....................... 4.76
Rotation speed ............................. 6,300RPM ±.5%
Interleave: ................................ 1:1
PHYSICAL
Height: 1.625 in. (41.3 cm)
Width: 4.00 in. (101.6 mm)
Depth: 5.750 in. (146 mm)
Weight: 2.2 lbs. (1 kg)
Environmental:
Temperature
Operating .............................. 5°C to 55°C
Non-operating .......................... -40°C to 65°C
Thermal gradient ....................... 20°C per hour max
Humidity
Operating .............................. 5% to 95% non-condensing
Non-operating .......................... 5% to 90% non-condensing
Maximum gradient/hr .................... 20%
Maximum wet bulb ....................... 27.6°C
Reliability and Maintenance:
MTBF ....................................... >300,000 hours
Preventive Maintenance ..................... None
MTTR ....................................... 30 minutes
Component design life ...................... >5 years
Recoverable error rate ..................... ~10 in 10 to the 13th ***
Unrecoverable error rate ................... ~10 in 10 to the 17th ***
Seek error rate ............................ ~10 in 10 to the 7th
Shock & Vibration (typical)
Operating shock ........................ 3 Gs (no errors)
Non-operating shock .................... 50 Gs
Operating (recoverable errors) ......... 10
Power dissipation (typical) ................ 13 Watts
Audible noise + 1 foot ..................... 30 dBA
Power requirements
+12 VDC ±5%, .79A (typical) 2.5A (maximum)
+5 VDC ±5%, .81A (typical)
SCSI-BUS COMMAND SET
Format Unit Reserve
Inquiry Rezero Unit
Mode Select Seek
Mode Sense Seek (Extended)
Read Send Diagnostics
Read Capacity Start/Stop Unit
Read Data Buffer Test Unit Ready
Read Defect Data Verify
Read (Extended) Write
Read Long Write and Verify
Reassign Block Write Data Buffer
Release Write (Extended)
Request Sense Write Long Request
* Includes settling
** Includes arbitration, message transfer, command transfer, command
interpretation, status interpretation, and the posting of status.
*** With default error recovery parameters
MXT is a trademark of Maxtor Corporation.
Specifications subject to change without notice.
Copyright 1992 Maxtor Corporation.
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MXT1240SL JUMPERS
/-----------+----------------------------------\
* J6 * FUNCTION *
* PINS * *
+-----------#----------------------------------#
* 1-6 * SCSI ID *
+-----------#----------------------------------#
* 7-8 * PARITY open = disabled *
* * jumper = enable *
+-----------#----------------------------------#
* 9-10 * MOTOR START WITH POWER *
* *Open = Wait for START Command *
* *Jumped = Start When Power Applied *
+-----------+----------------------------------/
/----------------------------------------------\
* JP1 Reserved *
+----------------------------------------------#
* JP2 & JP5 Reserved *
+----------------------------------------------#
* JP4 Jumped = Write Enable *
* Open = Write Protect *
+----------------------------------------------#
* JP8 Jumped=Factory Default. "Don't remove" *
* Drive will auto configure terminator power. *
+----------------------------------------------/
/----------------------------------------------\
* JP7 *
+----------------------------------------------#
* Single Ended Jumped Pins 3-4 *
+----------------------------------------------#
* Differential Jumped Pins 1-2, 9-10 *
* 5-6, 11-12 *
* 7-8, *
+----------------------------------------------/
MXT1240S PCBA LAYOUT
/-----+----------------------------------------------------------------\
* * = J5
* J3 * 9 7 5 3 1 =
* * /---------------\ *
* .*Pin 1 * @ @ @ @ : * J6 *
+-----/ +---------------/ =
+-----\ 10 8 6 4 2 =
* .*= Pin 1 = J2
* *= =
* *= . JP1 =
* *= % RN1 : 1 2 *
* J1 *= % /-----\ JP2 *
* *= % * : : * = J4
* *= % +-----/ 1 2 =
* *= /--\ *
* *= . *..* *
* *= % RN2 11 9 7 5 3 1 *..* *
* *= % JP8 /------------------\ *..* *
* *= % @@@ * : : : : @ : * @ *..* *
* *= % +------------------/ JP4 +--/ *
* *= J7 JP5 *
+-----/----------------------------------------------------------------/
Pin 50
* Terminating Resistors RN1 and RN2
=============================================================================
MAXTOR MXT1240S (SCSI ID)
/------+----------+-----------+-----------+-----------\
* SCSI * Priority * J6 (MSB) * J6 * J6 (LSB) *
* ID * * Pins 5-6 * Pins 3-4 * Pins 1-2 *
+------#----------#-----------#-----------#-----------#
* 0 * Lowest * O * O * O *
+------#----------#-----------#-----------#-----------#
* 1 * * O * O * J *
+------#----------#-----------#-----------#-----------#
* 2 * * O * J * O *
+------#----------#-----------#-----------#-----------#
* 3 * * O * J * J *
+------#----------#-----------#-----------#-----------#
* 4 * * J * O * O *
+------#----------#-----------#-----------#-----------#
* 5 * * J * O * J *
+------#----------#-----------#-----------#-----------#
* 6 * * J * J * O *
+------#----------#-----------#-----------#-----------#
* 7 * Highest * J * J * J *
+------+----------+-----------+-----------+-----------/
O=OPEN J=JUMPERED
BASIC SCSI INSTALLATION STEPS
- Drive is shipped with an ID of 6 to provide spare jumpers.
Choose address jumpers according to specific installation requirments.
- The last physical device on the SCSI bus must be terminated.
Any other SCSI device connected between the host and the device at
the end of the bus must NOT be terminated.
- Install a 50-pin ribbon connector. The striped edge of the 50-pin ribbon
cable represents pin 1 and must be oriented towards pin 1 at the drive
connector and the host connector.
- Install the DC power connector.
- Secure the drive in a bay with 6-32 x 1/4" screws.
- Set the drive type in the AT BIOS setup to "not installed".
Note: This intelligent drive will identify itself to the system and
SCSI host adaptor.
- The drive is now ready for partitioning and high-level formatting
with any operating system. For example:
Partition the drive using the FDISK program from MS-DOS
version 3.3 or higher.
High-level format the drive using the FORMAT command from
MS-DOS version 3.3 or higher.