MICROPOLIS 2105A DISK DRIVE
SPECIFICATIONS
Model Number
Unformatted Capacity: 2105-15
Total Mbytes --------------- 650 -----------------
Disk Platters ----------------- 5 -----------------
Read/Write Heads ----------------- 8 -----------------
Cylinders --------------- 1760 -----------------
Bytes per track ----------- VARIABLE -----------------
Formatted Capacity
Total Mbytes ---------------- 560 -----------------
Bytes per Sector ---------------- 512 -----------------
Sectors per Track ----------- VARIABLE -----------------
Performance Specifications
Seek Time Adjacent Track 1.5 msec
(including settling time) Average 10.0 msec
Maximum 25 msec
Average Rotational Latency 5.56 msec
Rotational Speed 5400 rpm +/- 0.5%
Data Transfer Rate at Interface Up to 5.6 Mbytes/sec
Internal Data Rate 24 to 40 MHz
MTBF 300,000 hours
Positioner Fully balanced rotary voice coil
Parking Automatic park and lock
General Functional Specifications
Interface AT/IDE
Supports Full Common Command Set YES
Mounting Plane Any orientation
Power Requirements
+12V +/-5% 0.75A Avg
(2.0 max during start-up)
+5V +/-5% 1.0A avg
Power dissipation, typical 11.5 Watts
7. Drive Options
____ _______________________ ________
| J2 | | J1 | | J3 |
| |_|_______________________|_|________|
| |
| RESERVED |
| | | | |
| : : : : : |
| | | |
| W1 | |
| W2 |
| |
\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
| LED |
|________||_______________________________|
W1, W2 Jumpers (Master / Slave Selection)
The interface allows up to two drives (a Master and one Slave) to be
attached to the AT/IDE bus. The following table shows the configurations.
W1 W2 Description
+------+------+-------------------------------------------------------+
| OUT | IN | Drive is Master, Slave is present |
+------+------+-------------------------------------------------------+
| IN | OUT | Drive Slave |
+------+------+-------------------------------------------------------+
| OUT | OUT | Drive is Master |
+------+------+-------------------------------------------------------+
DRIVE IS MASTER, SLAVE IS PRESENT
Specifies the Master drive (Drive 0) when two 2112A drives are used in the
system. The other drive is the Slave.
DRIVE IS SLAVE
Specifies the Slave drive (Drive 1) when two 2112A drives are used in the
system. The other drive is the Master.
DRIVE IS MASTER
Specifies the Master drive (DRIVE 0) when one 2112A drive is used in a
system.
