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26 Sun StorageTek SAM Archive Configuration and Administration Guide • Version 4, Update 6, 04/07

■ Relocate cartridges to off-site storage to use later for disaster recovery purposes.

You can use the -I option on the chmed(1M) command to specify additional

information such as the storage location of the cartridge.

When you import and export cartridges, you also update the library catalog.

The library catalog is the central repository of all information that the Sun

StorageTek SAM environment needs for finding cartridges in an automated library.

The library catalog file is a binary UNIX file system (UFS)-resident file that contains

information about each slot in an automated library. The information in this file

includes the one or more VSNs associated with the cartridge stored in the slot; the

capacity and space remaining on that cartridge; and flags indicating read-only,

write-protect, recycling, and other status information for the cartridge.

The Sun StorageTek SAM environment treats catalogs differently depending on how

the automated library is attached to the server, as follows:

■ If the automated library is direct attached, the library catalog is a one-to-one

mapping between library catalog entries and physical slots in the automated

library. The first entry in the library catalog is for the first slot in the automated

library. When a cartridge is needed, the system consults the library catalog to

determine which slot contains the VSN, and it issues a command to load the

cartridge from that slot into a drive.

Note – Sun StorageTek SAM does not support mixed media in direct attached

libraries. If the library is partitioned, each partition must contain only one media

type.

■ If the automated library is network attached, the library catalog is not a direct

mapping to the slots. It is a list of the VSNs known to be present in the automated

library. When a cartridge is requested, the system sends a request to the vendor’s

software to load the VSN into a drive. The vendor’s software locates the VSN’s

storage slot.

Each automated library handles cartridge import and export differently, due to

system characteristics and the vendor-supplied software. For example, on the ACL

4/52 library, you need to issue a move command to move cartridges into the

import/export unit before exporting cartridges from the automated library.

Network attached automated libraries import and export cartridges using their own

utilities, so the import(1M) and samexport(1M) commands only update the library

catalog entries used by the Sun StorageTek SAM systems. If you have a network

attached library, see “Basic Operations for Libraries With Vendor-Specific

Operational Procedures” on page 229 for information about importing and exporting

cartridges.

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US Robotics 7931 Guía de usuario Pagina 50