Table of Contents
Advertisement
PERFORMANCE SPECIFICATIONS
1.0
SPECIFICATION
SUMMARY
CAPACITY
Per Drive:
Per Surface:
Per Track:
Per Sector:
Sectors Per Track:
UNFORMATTED
12.76 MB
6.38 MB
10,416 Bytes
NA
NA
FORMATTED
10.0 MB
5.0 MB
8,192 Bytes
256 Bytes
32 Sectors
1.1
ACCESS TIME DEFINITION AND TIMING
1.1.1
23.0 msec. max.
65.0 msec. max!
170.0 msec.
Access time is defined as the time from the leading edge of the last Step pulse
received to SEEK COMPLETE (including settling). The Step pulse period must
be between 5 p,sec. to 500 p,sec.
Track-to-Track:
Average:
Maximum:
FUNCTIONAL SPECIFICATIONS
1.2
Rotational Speed:
Average Latency:
Recording Density:
Track Density:
Cylinders:
Tracks:
Discs:
Recording Method:
Data Transfer Rate:
3,600 RPM ± 1070
8.33 msec.
10,560 BPI/FCI
550 TPI
306
1,224
1
MFM
5.0 Megabits/second
PHYSICAL SPECIFICATIONS
1.3
Height:
Width:
Depth:
Weight:
1.63 inches max. (41.4 mm)
5.75 inches max. (146.05 mm)
8.00 inches max. (203.2 mm)
3.00 lbs (1.4 Kg)
RELIABILITY SPECIFICATIONS
1.4
MTBF:
PM:
MTTR:
Service Life:
11,000 Power-on Hours 2
Not Required
30 Minutes
5 Years
READ ERROR RATES
Recoverable Read Errors:
Nonrecoverable Read Errors:
Seek Errors:
1 per 1010 bits read
3
1 per 10 12 bits read
4
1 per 10
6
seeks
1.4.1
1. Buffered-Seek
2. Typical usage at 25 oC at sea level. Calculated per Mil. Spec. 217.
3. Recoverable within 16 retries
4. Not recoverable within 16 retries
ST212 PRODUCT MANUAL/Rev. B
1
Advertisement
Table of Contents
