Drive Performance Specifications - IBM DDS Gen 5 User Manual

The following table lists pin assignments of the power connector.
Note: The drive employs a power-sensing circuit that automatically detects a loss
of supply voltage from the host. Temporary loss of supply voltage, or voltage
spikes, might result in the drive electronics being reset to their initialized state, but
shall under no circumstances result in a loss of recorded data.

Drive performance specifications

The following table lists the specifications for the DDS Gen 5 tape drive.
Pin
1
2
3
4
Specification
Capacity
v 125m MP++
v 150 m MP+++
v 170 m MP++++
Error recovery
Track density
Recording unrecoverable errors
Tape drive type
Head configuration
Recording format
Recording method
Cartridge
Transfer rate (sustained)
Synchronous transfer rate (burst)
Asynchronous transfer rate (burst)
Search speed (max)
Drum rotation speed
Tape speed
Head-to-head speed
Assignment
+12 VDC
+12 return
+5 return
+5 VDC
Value
v 24.0 Gbytes
v 40.0 Gbytes
v 72.0 Gbytes
Read-after-write (RAW)
Reed Solomon ECC (C3 - 3 levels)
TBD
4704 tracks per inch (TPI)
15
<1 in 10 data bits
Computer-grade 4DD mechanism
2 read reels, 2 write heads
DDS 5th generation
Helical scan
73.66 mm x 53.34 mm x 10.16 mm
7.700 Kbytes per sec (DC ON)
80 Mbytes per sec max
10 Mbytes per sec max
200x normal (3260 mm per sec)
10,000 revolutions per minute (RPMs)
2 meters per second
TBD
Appendix A. Specifications
27