EF52R Solid State Disk Drive

From Computer History Wiki
Jump to: navigation, search

Manufacturer: Digital Equipment Corporation
Drive Controller(s): all DSSI Controllers
Capacity: 205 Mbytes (formatted)
Transfer Rate: 4.0 Mbytes/sec
Average Access Time: 0.25 msec
Start Time: < 2 min
Physical Size: 5.25" full height

The EF52R is the medium size drive of DEC’s first generation of solid state disks packaged in a full-height, 5 1⁄4-inch form factor. The EF52R ISE provides non-volatility of data by a data retention system including:

  • Power sensing logic
  • An internal winchester magnetic disk drive
  • A battery to power the EF52R while dumping data to the winchester disk

Apart from the DSSI interface, the EF52R disk drive is identical to the EZ52R Solid State Disk Drive.

External links