Digital Equipment DEC 3000 Series Service Information page 384

Option Hardware Specifications
B–12
Table B–8 (Cont.) RZ25 Drive Specifications
Specification
Blocks per drive
Spare blocks per
track
Spare blocks per
drive
Spare cylinders
Buffer size
Data transfer rate
to/from media
Data transfer rate
to/from buffer
Bus asynchronous
Bus synchronous
Seek time track to
track
Seek time average
Seek time
maximum (full
stroke)
Average latency
Rotational speed
Start time
Stop time
Interleave ratio
Operating Conditions
Ambient
temperature
Relative humidity
Altitude
Maximum wet bulb
temperature
Heat dissipation
Temperature
gradient
Description
832,527
1
14,148
2
60 KB
2.1–3.2 MB/s (variable)
2.33 MB/s
3.0 MB
4.0 MB
2.5 ms
14 ms
28 ms
6.8 ms
6
4412 rpm 0.5%
20 s maximum
30 s maximum
1:1
10°C to 50°C (50°F to 122°F)
8%–80%
–304.8 m to 3048 m (–1000 ft to 10,000 ft)
25.6°C (78°F), noncondensing
12 W (seeking), 10 W (typical)
11°C/hr (20°F/hr)
(continued on next page)