Chapter 3. Preparing the Library

As explained above, each logical library has a separate SCSI bus, separate drives, and separate slots. The following diagrams illustrate different logical library configurations.

Possible Logical Library Configuration 1 In the example below, a four-drive, 40-slot library is connected to two machines. Each host is allocated 20 tape slots and exclusive rights to two tape drives each. A SunOS host machine runs Veritas software with 20 slots and two drives on SCSI Bus 1; an HPUX host machine running Veritas is allocated the remaining 20 tape slots and two drives on the second SCSI bus. The Emulate 1/2 field is set to 10 (Sun running Solaris) and the Emulate 3/4 field is set to 13 (HP9000 running HPUX).

Drive 1

SCSI Bus 1

Drive 2

SunOS Host

 

20 Slots

 

20 Slots

 

SCSI Bus 2

 

Drive 3

HPUX Host

Drive 4

Figure 3-5Possible Logical Library Configuration 1.

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Spectra Logic 10000 manual 5Possible Logical Library Configuration