Technical information

2.2.9 RA90 Disk Drive
The RA90 disk drive is a high-capacity fixed-disk drive that provides 1.2
gigabytes of formatted storage space. The VAX 4000 Model 200 supports
these drives in separate storage expansion enclosures only.
Storage Capacity
User capacity 1.2 gigabytes
User capacity (blocks) 2,376,153
Ordering Information
RA90–NA RA90 disk drive (120 V)
RA90–ND RA90 disk drive (240 V)
BC26V–12 Interconnect cable with connector block
Performance
Average seek time 18.5 milliseconds
Average access time 8.33 milliseconds
Peak transfer rate 22.2 Mbits/second
Physical Specifications
Height 26.6 cm (10.4 in)
Width 23.0 cm (8.7 in)
Depth 68.5 cm (27.0 in)
Weight 13.6 kg (62 lb)
Configuration Information
Form factor 10.5-in high, full rack width
Power requirements +5 Vdc, 1.3 A; +12 Vdc, 2.21 A
Power consumption 18.7 W
Related Documentation
EK–ORA90–SV RA90 Disk Drive Service Guide
EK–ORA90–UG RA90 Disk Drive User’s Guide
2–12 VAX 4000 Model 200 Technical Information