Qualstar XLS Series Technical & Service Manual page 39

2
About the XLS
Tape Drive Assemblies
Shown in Figure 2-13, an XLS tape drive assembly consists of an LTO tape drive
enclosed in a drive carrier.
Figure 2-13 Fibre Channel tape drive assembly (rear view)
Two models of tape drives are available: SCSI tape drive assemblies include dual SCSI
HD68 connectors and a single status LED, while Fibre Channel tape drive assemblies
include a duplex LC multi-mode Fibre Channel receptacle and three LEDs.
In addition to the connectors, each drive carrier includes a cooling fan, the drive carrier
DCB, and a DC-to-DC power supply. A digital signal processor provides communication
between the library and the tape drive's serial port for configuring the drive and obtaining
status. The serial port is not used to read or write data to the tape. The drive carrier DCB
communicates with the system controller using the CAN1 bus. The DC power supply is
controlled by the drive bay processor.
Depending on the capabilities of the application software being used, the Fibre Channel
tape drive assemblies can be removed and replaced without powering down the library.
The library automatically detects the presence of a new tape drive.
XLS Library Technical Service Manual 2-25