Sun Microsystems StorEdge L400, Инструкция по установке и эксплуатации

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Chapter 4 Installing a Tape Library Rackmount Version 4-17
4.7.1 SCSI Buses
You can separate the internal SCSI bus of the tape library into one, two, or three
buses. Each drive and the robotic arm are on an individual bus. You can put the
entire unit on one bus by installing the provided jumper block across the middle
four SCSI connectors on the tape library rear panel.
You should use the single bus for most installations. Other than some fault tolerance
there is no significant advantage to the multiple bus configuration. There is no
throughput advantage to having the internal drives on two buses except in the
extreme case of very un-compressible data when using data compression on the
drives. And, with the multiple bus configuration, control and access by the
applications software can be an issue. You must verify that the your software can
support separating the second drive onto a separate SCSI bus or separate host
system.
If you configure your tape library for multiple SCSI buses, you must order and
install one or more of the appropriate SCSI terminators and SCSI cables and SCSI
bus host adapter cards if not available.
4.7.2 Installing the SCSI Cable
1. Connect a 4-meter SCSI data cable to the tape library.
Note –
If you are installing the tape library into an expansion cabinet, go to Step 2.
If you are install the library into a system cabinet, you do not need to route the cable
outside of the rack, go to Step 4.
2. Route the SCSI data cable down the left side and along the bottom of the cabinet.
3. Route the SCSI data cable over the edge of the bottom panel of the expansion
cabinet (FIGURE 4-14).
The cable will be routed between the bottom panel and the kick panel when you
replace the kick panel.
Note –
You may want to use tie wraps as cable restraints for the data cables
connected to the tape library. Pass a tie wrap through the slit in the base of the
cabinet and secure the cable(s) in the wrap.