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MAXTOR 7120S SCSI DRIVE
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SPECIFICATIONS:
Formatted: 130.4 Million bytes
Embedded Controller: AT or SCSI
Number of Disks: 2
Data Surfaces: 4
Data Heads: 4
Servo: Embedded
Tracks per Surface: 1,156
Track Density (average): 1,800 tpi
Track capacity (formatted): 21,504
Bytes per Block: 512
Blocks per drive: 254,688
Sectors per track: 42 physical
PERFORMANCE (Typical):
Seek times* (ms)
Track to track: 4
Average: 15
Maximum: 30
Average latency (ms) 8.55
Rotation speed 3,524 RPM
Controller overhead 1 ms
Data transfer rate (Mbytes per sec)
To/from media 1.5
To/from buffer (AT) 6.0
To/from buffer (SCSI) 5 (sync) 3 (async)
Start time/power up (0 - 3,524 RPM)
Typical 3 sec
Maximum 10 sec
Start/stop cycles: 20,000 min
Interleave: 1:1
Buffer Size: 64K
Interface: AT or SCSI
Recording Method: 1,7 RLL
Recording density - ID: 34,087 bpi
Flux density - ID (flux reversals per inch): 25,565
POWER REQUIREMENTS (Typical):
MODE +12V DC +8% +5V DC +5% POWER
---- ----------- ---------- -----
Spin-up 800 mA 120 mA 10.2W peak
R/W 200 mA 300 mA 3.9W
Idle 130 mA 105 mA 2.2W
Standby 2 mA 120 mA 0.6W
Sleep 2 mA 20 mA 0.1W
Physical:
Height: 1.00" (2.54 cm)
Length: 5.75" (14.61 cm)
Width: 4.00" (10.16 cm)
Weight: 1.2 lbs. (.57 kg)
ENVIRONMENTAL:
Temperature
Operating: 5 degrees C to 50 degrees C
Non-operating: -40 degrees C to 65 degrees C
Thermal gradient: 20 degrees C per hour max
Humidity
Operating: 8% to 80% non-condensing
Non-operating: 8% to 80% non-condensing
Maximum wet bulb: 26 degrees C
Altitude (Relative to sea level)
Operating -200 to 10,000 feet
Non-operating 40,000 feet max
RELIABILITY & MAINTENANCE:
MTBF: 150,000 hours (POH),predicted at 35 degrees C)
MTTR: 30 minutes typical
Preventive maintenance: None
Component Design Life: 5 years (minimum)
Data Reliability
Hard read errors ^10 per 10-13 bits read
Shock and Vibration
Shock measured at half-sine pulse. Vibration measured at swept sine,
1 octave per minute.
Non-operating shock: 70Gs, 1ms
Operating shock: 10 Gs, 11ms (without non-recoverable errors)
Non-operating vibration: 5 - 11 Hz 0.320" (double amplitude)
11 - 300 Hz 2G's, 11 ms (without non-
recoverable errors)
Operating vibration: 5 - 11 Hz 0.160" (double amplitude)
11 - 300 Hz 1 G peak amplitude
Accoustic Noise
42dBa max. at 1 meter
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Maxtor 7060S/7120S Jumper Designation And Parameters
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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.