RM02/RM03 picture from DEC Peripherals handbook
Picture of my RM03, a disk pack, massbus cable and 3.5" SCSI drive
Closeup of the RM03 drive unit
| Specifications | |
|---|---|
| Controller | MASSBUS |
| Disk type | 14" five-platter removable disk pack |
| Dimensions | Height: 39" / 99 cm
Width: 21.7" / 55.1 cm Depth: 31" / 79 cm |
| Weight | 430 lbs / 195 kg |
| Phases | 1 |
| Starting (surge) Current |
30 A @ 120 VAC
22 A @ 240 VAC |
| Surge Duration | 10-12 s |
| Operating Current | 11 A @ 120 VAC
5.3 A @ 240 VAC |
| Power Consumption | 1050 W Maximum |
| Heat Dissipation | 4128 BTU/hr Maximum |
| Drives per controller | 8 |
| Formatted capacity per disk pack | 67MB |
| Peak transfer speed | RM02: 806 KB/s
RM03: 1200 KB/s |
| Average access time | RM02: 42.5 ms
RM03: 38.5 ms |
| Average Rotational Latency |
RM02: 12.5 ms
RM03: 8.3 ms |
| Average Seek Time | 30 ms |
| Track to Track Seek | 6 ms |
| Rotational Speed | RM02: 2400 RPM
RM03: 3600 RPM |
| Surfaces per Disk Pack | 5 data 1 servo |
| Tracks per Surface | 823 |
| Sectors per Track | 32 (16-bit format) |
| Bytes per Sector | 512 |
| Tracks per Inch | 384 |
| Bits per Inch | 6038 |
|
RM02/RM03 picture from DEC Peripherals handbook |
|
Picture of my RM03, a disk pack, massbus cable and 3.5" SCSI drive |
|
Closeup of the RM03 drive unit |