User's Guide

2-6 System Description
6-01337-04 Rev A
In a Dual Aisle configuration, a safety barrier is included,
which allows for concurrent maintenance by trained service
personnel. Refer to
Dual Aisle Configurations on page 3-14.
Expansion Module
The EM extends the length of the aisle and allows the library
to be expanded to accommodate additional drive and
cartridge requirements. In a COD or Customer-Specific
configuration, the Scalar 10K can include a maximum of three
EMs. These modules extend the X-rails (top and bottom)
which allow the accessor to travel the length of the library.
Each EM has four attachment areas called racks that can be
used to attach feature modules or storage assemblies as
shown in
Figure 2-2 on page 2-8.
When EMs are used in a Dual Aisle configuration, two inside
TMs attach to each EM, leaving two racks that can be used to
attach feature modules or storage assemblies. Refer to
Dual
Aisle Configurations on page 3-14. A maximum Dual Aisle
configuration includes six EMs.
Drive Module
The DM is a feature module that is attached to an AM or EM.
See
Figure 2-3 on page 2-10. The DM contains its own AC
power compartment and drive communication electronics. It
can be configured with one to four drive bays. Each drive bay
accommodates 1–6 DLT/SDLT or LTO tape drives or 1–4
3592-J1A/TS1120 tape drives. See
Figure 2-3 on page 2-10.
Different types of drives can be intermixed in a DM with the
exception of 3592-J1A/TS1120 drives. 3592-J1A/TS1120
drives require a special DM that is only compatible with 3592-
J1A/TS1120 drives.
In a Dual Aisle configuration, DMs can be attached to the EMs
of the primary aisle and secondary aisle. Refer to
Dual Aisle
Configurations on page 3-14.
Tower Module
The TM is a feature module that is attached to an AM or EM.
The TM contains a storage tower and control electronics and
is configured for only one media type. See
Figure 2-3 on page
2-10. TMs can be bulk loaded or unloaded through the TM
service door.
Maximum TM capacity depends on the media type loaded.
See
Table 2-1 on page 2-7.