Q24/Q48 Tape Library Installation and Operations Manual
1 Product Overview and Features
This manual provides information about installing, operating, troubleshooting and servicing a Qualstar
Q24 or Q48 Tape Library. It is intended for system administrators and general users who need
physical and functional knowledge of the Q24 or Q48 Tape Library.
The two libraries are similar, physically and functionally. The primary difference is the height of the
Q48. The Q48 is twice the height of the Q24. The Q48’s added height increases the tape cartridge
capacity to 48 slots, and the number of tape drives to a maximum of four.
This document uses the reference Q24/Q48 to refer to either the Q24 or the Q48 Tape Library.
The Q24/Q48 Tape Library provides a compact, high capacity, low-cost solution for simple,
unattended data backup. It is compatible with most host operating systems and environments
provided the host is equipped with the appropriate interface card. However, the library requires either
direct support from the operating system or a compatible backup application to take full advantage of
its many features.
Major characteristics of the Q24/Q48 Library include:
• Platform – support for either one or two half-height LTO5 or LTO6 tape drives in a Q24 Tape
Library, and one to four in a Q48 Tape Library.
• Connectivity – Fibre Channel (FC) and/or Serial Attached SCSI (SAS) depending upon
installed tape drives
• Expandability – additional half-height tape drives may be field-installed in a library that has
unused drive slot locations.
• Technology upgrade – tape drive technologies can be upgraded in the field (i.e. LTO5 to LTO6)
• Service friendly design – easy access to magazines, tape drives, library controller and power
supply for field replacement
• Maximum up time – through advanced error handling and recovery capability
The Q24/48 Library includes the following features:
• USB interface to enable serviceability features (library and drive firmware upgrades) and/or
customized features (storage on demand) implementation
• The library can be operated via the front operator control panel (OCP), over the network or the
Internet via the integral remote management unit (RMU), or via the storage interface connection
from the host application
• Supports industry standard management protocols such as SNMP (SMI-S future development)
• The Q24 has one mail slot for import/export of cartridges during library operation while the Q48
has three mail slots
• Media changer with barcode reader
• Rack-mounted or standalone operation
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