Active Capacity; Realtime Growth; Capacity On Demand - Oracle StorageTek SL3000 System Assurance Manual

Base module
Contains window array and two drive arrays. There are modules to the right and left.
320 (standard) + 23 (window array) + 13 (right module) + 88 (left module)
– 66 (2nd drive array) = 378
DEM
Contains an op panel and three drive arrays. There is a module to the left.
410 (standard) + 88 (left module) + 0 (op panel) – 66 (2nd drive array)
– 72 (3rd drive array) = 360
Left CEM
Module is installed left of centerline with no module to the left.
516 (standard) = 516
Right CEM
Module is installed right of centerline with modules to the right and left.
516 (standard) + 104 (left module) = 620
AEM
Module is installed right of centerline (not recommended for single AEM).
0 (standard) = 0
Library Total
378 (Base) + 360 (DEM) + 516 (left CEM) + 620 (right CEM) + 0 (AEM) = 1,874

Active Capacity

The SL3000 library uses Capacity on Demand and RealTime Growth to allow
customers to instantly increase and activate capacity without disruption.

RealTime Growth

RealTime Growth allows physical capacity to be pre-installed and then activated as
needed. Additional library modules are installed during the initial installation. Then,
through Capacity on Demand, the customer pays to activate slots when additional
capacity is necessary. No additional physical library components are required.

Capacity on Demand

Capacity on Demand is non-disruptive, allowing you to increase capacity within the
library by activating previously-installed, yet inactive slots. You can upgrade capacity
in 25, 100, 200, 500, and 1000 slot increments. To activate a capacity upgrade, a
hardware activation file is required (see
Changes to active capacity result in minimal disruptions to library operations. The
specific library behavior depends on the type of host connection, HLI or FC-SCSI (refer
to SL3000 User's Guide). It is recommended that you make the library unavailable to
other user requests before committing the active storage region changes.
"Hardware Activation Files"
Active Capacity
on page 9-1).
Capacity 4-3