Power System; Comparison Of Models; Table 1-1. Library Model Comparison - StorageTek L20 Series General Manual

Power System

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Power System
The L20 and L40 libraries have one standard power supply. For the L40, you can order an
optional second supply to provide redundant power to the library and drives. The L80
has two standard power supplies, and you can order two redundant power supplies.
When you use the redundant power supplies, each supply should be plugged into a
separate circuit and powered-on to provide redundant power. If one supply fails, the
second supply automatically provides power.
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Comparison of Models

This table provides a quick overview of the libraries.

Table 1-1. Library Model Comparison

Library
Cartridge Slots
Height (in rack units)
Drives
Capacity (maximum uncompressed)
DLT 8000
SuperDLT 220
SuperDLT 320
LTO Ultrium
1-4
L20 L40
10, 20 20, 40
4 U 10 U
1–2 1–4
800 GB 1.6 TB
2.2 TB 4.4 TB
3.2 TB 6.4 TB
2.0 TB 4.0 TB
Seventh Edition
L80
40, 60, 80
18 U
1–8
3.2 TB
8.8 TB
12.8 TB
8.0 TB
MT9104