StorageTek L180, Руководство по обслуживанию

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External Interfaces
A-20 Fifth Edition 95897
Library LVD Operation
StorageTek allows the library to be converted to LVD operation through an
extra interface card—the MPW card—that attaches to the MPC card. The MPW
card fits into Slot 0 on the electronics module bulkhead. The customer orders
the MPW card and card cage with library feature code LV02.
SCSI Bus Precautions
Use caution when connecting the LVD or HVD interfaces. Table A-9 lists
potential equipment damage or bus-disabling situations that may arise if the
two types are intermixed.
CAUTION:
Potential equipment damage: The single-ended, LVD, and HVD SCSI
alternatives are not compatible and cannot be mixed on the same SCSI
bus.
Table A-9. SCSI Device/Bus Types: Precautions
If you plug this
device type ... into a Single-
ended (SE)
Bus Type ... into an LVD
Bus Type ... into an HVD
Bus Type ...
Single-ended (SE)
device
No effect. This
is a proper
connection. The entire bus
will run in SE
mode (with all
SE restrictions). The HVD bus
will be
disabled .
LVD device
The LVD device
will run in SE
mode. No effect. This
is a proper
connection. The LVD device
will be
disabled
(potential
damage to the
device)
.
HVD
The HVD
device will be
disabled .
The LVD bus
and all LVD
devices will be
disabled
(potential
damage to LVD
devices)
No effect. This
is a proper
connection.