Administrators can define, query, update, and delete drives.
Task | Required Privilege Class |
---|---|
Define drives | System or unrestricted storage |
To inform the server about a drive that can be used to access storage volumes, issue the DEFINE DRIVE command. When issuing this command, you must provide some or all of the following information:
For example, to define a drive that belongs to the manual library named MANLIB, enter this command:
define drive manlib tapedrv3 device=/dev/mt3
Task | Required Privilege Class |
---|---|
Request information about drives | Any administrator |
You can request information about drives by using the QUERY DRIVE command. This command accepts wildcard characters for both a library name and a drive name. See ADSM Administrator's Reference for information about using wildcard characters.
For example, to query all drives associated with your server, enter the following command:
query drive
The following shows an example of the output from this command.
+--------------------------------------------------------------------------------+ |Library Drive Device Device On Line | |Name Name Type | |-------- ------- --------- -------- ------- | |MANLIB 8MM.0 8MM /dev/mt1 Yes | |AUTOLIB 8MM.2 8MM /dev/mt2 Yes | +--------------------------------------------------------------------------------+
Task | Required Privilege Class |
---|---|
Update drives | System or unrestricted storage |
You can change the attributes of a drive by issuing the UPDATE DRIVE command. You can change whether the drive is online or offline. You can also change the device name if you are reconfiguring your system. If the drive resides in a SCSI library, its ELEMENT attribute can be updated.
You can change a drive to offline status while the drive is in use. ADSM will finish with the current tape in the drive, and then not use the drive anymore. By changing a drive to offline, you can drain work off of a drive. However, if the tape that had been in use was part of a series of tapes for a single transaction, the drive will not be available to complete the series. If no other drives are available, the transaction may fail. If all drives in a library are made offline, any attempts by ADSM to write to the storage pool associated with the library will fail.
The device name or element number for a drive cannot be updated if it is currently in use. If a drive has a volume mounted, but the volume is currently idle, it can be explicitly dismounted as described in "Dismounting an Idle Volume". For example, suppose you have a drive DRIVE3 and you want to change the element address to 119. Enter the following command:
update drive auto drive3 element=119
Task | Required Privilege Class |
---|---|
Delete drives | System or unrestricted storage |
A drive cannot be deleted if it is currently in use. If a drive has a volume mounted, but the volume is currently idle, it can be explicitly dismounted as described in "Dismounting an Idle Volume".
Note: | A library cannot be deleted until all of the drives defined within it are deleted. |