Chapter 4 Configuring Your Library
Working With Partitions
Scalar i2000 User’s Guide 108
Media Domain 4
The media domain is the family of all cartridge types that can be stored in
the same storage slot. Typically, a media domain represents all the
generations and brands of a particular tape technology. Linear Tape Open
(LTO), for example, has many generations and vendors, but all LTO
cartridges are considered to exist in the same media domain.
Media Type 4
The media type is a particular generation of tape technology. Several
media types can exist within one media domain. Using LTO again as an
example, within the LTO media domain is the LTO-1 media type, the LTO-
2 media type, and so forth. A media type has an identifier, chosen by the
tape manufacturer or consortium, that enables users and libraries to
distinguish between them. The LTO consortium uses L1, L2, L3, and L4 to
identify the LTO-1, LTO-2, LTO-3, and LTO-4 media types in a volume
serial number.
Although the physical library can contain more than one media domain or
drive domain, you cannot have a mix of domain types within a partition
(for example, LTO and DLT). A single partition can have a mixture of
drive types and interface types within the same domain (for example,
LTO-1 and LTO-2 with SCSI or Fibre Channel interfaces).
To create or modify a partition with mixed media, you must select Expert
mode on the Partitions Wizard dialog box. You cannot create or modify
partitions with mixed media while in Automatic mode or Simple mode.
Media ID Checking 4
Media ID checking policy restricts the movement of tape cartridges based
on the media ID on the barcode label. This policy also helps you monitor
the management of tapes and drives by the host applications. When you
create or modify a partition, you can enable or disable the Media Type
Checking option. If you choose to enable media type checking, you also
can use the Media Checking Policy option to select from two modes of
operation: Required or Not Required. With either mode, the library
checks whether a cartridge has a valid media ID on the barcode label.
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