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Chapter 7  Fibre Channel Interface
Practical Considerations
DLT-S4 Product Manual
58
Practical Considerations
7
This section describes considerations specific to the DLT-S4 Fibre 
Channel tape drive.
Hot-Swappable Cables
7
Fibre Channel cables are “hot swappable,” which means that you may 
connect and disconnect them with unit power turned on. Therefore, 
unlike some other systems, the tape drive and computer may remain 
powered on while you connect the DLT-S4 tape drive to the host 
computer.
Power Usage
7
DLT-S4 Fibre Channel tape drives use slightly more power than SCSI-
configured tape drives. See the DLT-S4 Product Specification (81-81279-xx).
Power Cycle (Tape Drive 
On)
7
When the tape drive completes the power cycle process (including POST) 
and the port is initialized, the Fibre Channel port is enabled and will 
attempt to initialize on the attached Fibre Channel topology.
When the tape drive completes the power cycle process (tape drive 
turned on and POST complete), the device is on-line and capable of tape 
drive operations. 
See 
Failure to Obtain a Loop 
Address
7
If the tape drive is unable to obtain an address (fabric assigned, 
previously assigned, hard assigned, or soft assigned), it goes into a non-
participating mode and immediately implicitly logs out all logged-in 
ports.
If the tape drive experiences a power-on reset, or recognizes an 
LIP (AL_PD, AL_PS), it does not retain a previously acquired address to 
use during the next loop initialization.