XLS Library Installation Manual
11-1
11
Setting Up Logical Libraries
This chapter describes how to create logical libraries and how to print an inventory report
for each logical library so you can install the cartridges in the correct locations.
11.1
About Physical and Logical Libraries
The
physical library
consists of the entire XLS system, including the LRM, an attached
MEM or expansion pod, all tape drives, all cartridges slots, all I/O ports, the medium
changer interface, the robotics, and all HBAs in the system controller’s expansion slots.
When the XLS is installed, the resources in the XLS physical library are subdivided into
one to eight partitions, called
logical libraries
. These logical library partitions ensure that
different software applications have restricted and dedicated access to specific tape
drives, cartridge slots, and I/O ports. All logical libraries share access to the XLS’s
medium changer interface on a first-come, first-served basis.
depicts an example XLS configuration that shows the
high-level relationship between the physical library, the logical libraries, the host
computers, and the software applications. In the figure:
•
Three host computers running three software applications share the XLS
physical library.
•
To ensure that each software application has its own dedicated set of resources,
the physical library has been partitioned into three logical libraries. Each
software application controls its own logical library.
•
Each host computer connects to an HBA port in the library’s system controller.
The software applications communicate across the HBA connections to access the
library’s medium changer interface.
Note:
The connections can be either parallel SCSI or Fibre Channel.
•
All host computers communicate with the medium changer interface and share
control of the robotics (handler and carousel) on a first-come, first-served basis.
•
Each of the three logical libraries contains a subset of the total available tape
drives and cartridge slots.
Summary of Contents for XLS-810160
Page 1: ...XLS 810160 XLS 810240 Tape Libraries Installation Manual Document No 501801 Rev 07 01 19...
Page 8: ...Table of Contents viii 501801 Rev 07 01 19...
Page 32: ...1 6 For More Information 1 24 501801 Rev 07 01 19...
Page 78: ...6 5 Installing the Rear Side Panel 6 12 501801 Rev 07 01 19 Notes...
Page 100: ...8 2 Connecting the Cables 8 8 501801 Rev 07 01 19 Notes...
Page 114: ...9 3 Logging Into X Link 9 14 501801 Rev 07 01 19 Notes...
Page 154: ...10 6 Defining Other Library Settings and Policies 10 40 501801 Rev 07 01 19 Notes...
Page 168: ...11 3 Viewing the Inventory Report 11 14 501801 Rev 07 01 19 Notes...
Page 182: ...13 3 Scanning the Inventory and Locking the Doors 13 8 501801 Rev 07 01 19 Notes...
Page 198: ...A 3 Addresses for the Media Expansion Module MEM A 8 501801 Rev 07 01 19 Notes...
Page 208: ...Index IN 6 501801 Rev 07 01 19...
