Sun Microsystems StorageTek Modular Library System SL500 - Manual (Page 37)

Library with LTO Storage Cells
96116 • Revision: KA Chapter 1 SL500 Introduction 5
LTO Storage Cell and Drive Capacities
Note – Your software might conflict with the following information. Refer to your
software publication for unique information.
TABLE 1-1 shows the number of cartridge and tape drive slots available depending on
the type and number of modules installed. The table assumes that, when DEMs and
CEMs are installed in the same library, the DEMs are above all of the CEMs, as
preferred.
Note – Do not install an EZ DEM below an original CEM. This is not physically
allowed.
The following notes are factors that influence capacity:
1. When you add an expansion module below an existing module, you increase the
capacity of the module directly above it by:
■
Base module: +16 storage cells
■
CEM (when another CEM is below it): +10 storage cells
■
DEM: +7 storage cells
2. When a CEM is installed below a Base Module or DEM, the top two rows on
columns 9, 10, and 11 of the CEM are not accessible (-6 storage cells because the tape
drives prevent the hand from reaching the cells).
3. The lowest module in the rack requires installation of the floor. The floor limits the
distance the robot can travel, which makes the bottom row(s) in the lowest module
inaccessible:
■
Base module: -16 storage cells
■
DEM: -7 storage cells
■
CEM (below another CEM): -16 storage cells (-10 storage cells on the lowest CEM,
-6 storage cells on the CEM above it)
■
CEM (below Base Module or DEM): -16 storage cells
4. Cartridge access ports:
■
Base module: 5 storage cells (one magazine)
■
Each DEM: 10 storage cells (two magazines)
■
Each CEM: 10 storage cells (two magazines)
TABLE 1-1 LTO Storage Cell and Tape Drive Capacities
Modules
Maximum Number of Tape
Drives
CAP
Cells
Total # of
Storage
Cells
2 6 10 14 18
Base module 30 5 35
20-cartridge upgrade key 50 5 55
Adding 1 expansion module
Base module plus 1 limited DEM
100 15 115