Memorex 3220 Precision Magnetic Tape Quantum HD 1/2" 7200ft

Detail Memorex 3220 Precision Magnetic Tape Quantum HD 1/2" 7200ft

Performance. The Memorex 3220 Subsystem
offers tape speeds of 125 IPS (Memorex 3226 tape
drive) or 200 IPS (Memorex 3228 tape drive) with
standard feature densities of 1600 BPI and 6250 BPI.
Data rates from 200KB to 1,250KB per second can
be achieved. This improved performance can lead
to substantial increases in throughput- particularly
to users of high-performance disc equipment.
Operator Convenience. The 3220 offers an
unparalleled array of operator convenience features.
Its door contains a power-operated, down-moving
window which ensures adequate clearance for tape
loading. Tapes can be mounted quickly and surely
on vacuum actuated hubs. Its microprocessor
control provides the most sophisticated auto-load
sequence available. And its tape search is limited to
20 meters, thus eliminating runaway on unlabelled
or uninitialized tapes. Most important, the subsystem
works surely, quickly and every time. In production
environments, there is nothing that can touch
the 3220.
Dynamic Switching and 16-Drive Expansion.
Dynamic switching allows a 3221 Controller to be
attached to two channels on the same or different
CPUs and a 3222 to be attached to four channels on
the same or different CPUs. Sixteen-drive expansion permits the two controllers housed in the 3222
to access any of 16 drives. With both dynamic
switching and 16-drive expansion the 3222 can
permit four redundant channel paths to 16 drives.
Maintainability. Special attention has been
directed to insure that the 3220 remains at optimum
performance. A hierarchical series of diagnostics,
from the microprocessors' continuing diagnostics up
through a series of comprehensive stand-alone
and on-line diagnostics, flag most potential failures
prior to their causing service interruptions.

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