Oracle StorageTek SL3000, Руководство пользователя

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Library Modules
Library Overview 1-5
robotics feature (see "Robotics" on page 1-7). A sliding safety door sections off a
defective robot, allowing a service representative to access the disabled robot while the
library remains online.
AEM Configuration Options
■
Must be placed on the ends of the library. An AEM cannot be installed directly to
the left of the Base module; there must be a module in between.
■
A single AEM supports bulk load capabilities only. You should install a single
AEM on the left for an additional 104 storage slots (see
"Calculating Physical
Capacity" on page 1-17).
■
Dual AEMs support bulk load and redundant robotics support.
Parking Expansion Module (PEM)
The PEM is a converted CEM used to "park" a defective robot without blocking access
for the operational robot in a redundant robotics configuration (see
"Robotics" on
page 1-7). Performing maintenance on a disabled robot in a PEM is disruptive to
library operations.
The parking space causes six columns of cartridge arrays in the PEM to become
inaccessible (three on the front wall and three on the rear wall). You do not need to
remove the inaccessible arrays. The module can be restored to a CEM at anytime.
PEM Configuration Options
■
230 to 312 cartridge capacity (see "Calculating Physical Capacity" on page 1-17).
■
Only the left PEM can have an optional CAP.
■
Must be installed on each end of the library.
Figure 1–4 PEMs attached to a Base Module
Figure Legend:
Note:
AEMs and PEMs cannot be installed in the same library.