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Capacity on Demand
The SL500 library includes the Capacity on Demand feature. Capacity on Demand
separates physical capacity from licensed capacity, and allows you to pay only for the
capacity you need. Then as your needs grow, you can add modules and license the
portion that you need. To expand capacity within a module, you need only purchase
and install a license key file for the new capacity, and then reboot the library.
Note –
Starting with SL500 firmware version 1300 and SL Console version FRS_4.00,
storage capacity upgrades must be installed through the SL500 licensing utility. See
Chapter 4, “Licensing”
for details.
Note –
This feature controls cartridge storage cells only. All installed tape drives are
available by default. All cells in CAPs configured for enter and eject operations are
available if the module containing the CAP has any licensed storage cells
Capacity on Demand Features and
Restrictions
This section describes important features and restrictions of Capacity on Demand that
will help you to plan for and use the feature in your SL500 library.
■
Only licensed storage cells can be used for tape cartridge storage. Unlicensed storage
cells cannot be used for cartridge storage, nor can they be accessed by any hosts.
■
The minimum licensed capacity is 30 storage cells for LTO-only libraries, and 24
storage cells for mixed-media libraries. This is identified as a LimitedBase license.
■
You can purchase additional licensed capacity in the following increments:
■
FullBase—Licenses all storage cells in the Base Module.
■
FullDEM—Licenses all storage cells in a Drive Expansion Module (DEM).
■
ThirdDEM—Licenses one-third of the storage cells in a DEM. To license two-
thirds of a DEM, you would install two ThirdDEM licenses. To license all of a
DEM, you could install three ThirdDEM licenses or one FullDEM license.
■
FullCEM—Licenses all storage cells in a Cartridge Expansion Module (CEM).
■
After installing additional licensed capacity, you need to reboot the library. Once
verified by the library controller, the additional storage cells are available for use.
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