A device class represents a device type that can be used by ADSM. ADSM uses the device class to determine which device and storage volume type to use to:
One device class can be associated with multiple storage pools. Each storage pool is associated with just one device class.
Each device class is characterized by its device type, which indicates the type of storage volumes that are used to store data. For random access storage, ADSM supports only the DISK device class. The DISK device class is predefined by ADSM. However, you can define many storage pools that are categorized by the DISK device class.
For sequential access storage, ADSM supports the following device
types:
| Device | Description | ||
|---|---|---|---|
| 3570 | IBM 3570 cartridge tape devices | ||
| 3590 | IBM 3590 tape drives | ||
| 4MM | 4mm tape drives | ||
| 8MM | 8mm tape drives | ||
| CARTRIDGE | Cartridge tape drives, such as IBM 3480, 3490, and 3490E drives | ||
| DLT | Digital linear tape drives | ||
| DTF | Digital tape format | ||
| ECARTRIDGE | Cartridge tape drives such as StorageTek SD-3 and 9490 drives | ||
| FILE | Storage volumes that are actually files in the file system of the server machine | ||
| GENERICTAPE | Tape drives supported by an AIX tape device driver | ||
| OPTICAL | Optical drives that use 5.25-inch rewritable optical cartridges | ||
| QIC | Quarter-inch cartridge tape drives | ||
| SERVER | Storage volumes that are actually files archived in the server storage of another ADSM server (a target server) | ||
| WORM | Optical drives that use 5.25-inch write-once read-many optical cartridges | ||
| WORM12 | Optical drives that use 12-inch write-once ready-many optical cartridges
| ||
| WORM14 | Optical drives that use 14-inch write-once ready-many optical cartridges
|
See the following sections:
In this chapter, most examples illustrate how to perform tasks by using the ADSM command line interface. For information about the ADSM commands, see ADSM Administrator's Reference, or issue the HELP command from the command line of an ADSM administrative client.
All of the ADSM commands can be performed from the administrative client web interface. A Version 3 administrative client GUI is also available for the Windows NT and Windows 95 operating systems. For more information about using the administrative interfaces, see ADSM Quick Start. You can find detailed help for using the graphical user interfaces in the online help facilities.