DEFINE LIBRARY (Define an ACSLS library)

Use this syntax to define an ACSLS library.

Privilege class

Windows operating systems To use ACSLS functions, the installation of StorageTek Library Attach software is required.

To issue this command, you must have system privilege or unrestricted storage privilege.

Syntax


>>-DEFine LIBRary--library_name--LIBType--=--ACSLS-------------->

   .-SHAREd--=--No------.  .-RESETDrives--=--No----------.   
>--+--------------------+--+-----------------------------+------>
   '-SHAREd--=--+-Yes-+-'  |                         (1) |   
                '-No--'    '-RESETDrives--=--+-Yes-+-----'   
                                             '-No--'         

   .-AUTOLabel--=--Yes-----------.                     
>--+-----------------------------+--ACSID--=--number-----------><
   '-AUTOLabel--=--+-No--------+-'                     
                   +-Yes-------+                       
                   '-OVERWRITE-'

Notes:

The default value of the RESETDRIVES parameter is conditional. If the SHARED parameter is set to NO, the value of the RESETDRIVES parameter is NO. If the SHARED parameter is set to YES, the value of the RESETDRIVES parameter is YES.

Parameters

library_name (Required)

Specifies the name of the library to be defined. The maximum length of this name is 30 characters.

LIBType=ACSLS (Required)

Specifies that the library is a StorageTek library that is controlled by StorageTek Automated Cartridge System Library Software (ACSLS).

SHAREd

Specifies whether this library is shared with other servers in a storage area network (SAN). This parameter is required when you define a library to the library manager.

YES: Specifies that this library can be shared with other servers. When you specify YES, the library manager server mounts volumes as requested by other servers and tracks drive and volume allocation to other servers.
NO: Specifies that this library cannot be shared with other servers. SHARED=NO is required if the library is controlled by passing commands through a NAS file server.

RESETDrives

Specifies whether the server preempts a drive reservation with persistent reserve when the server is restarted or when a library client or storage agent reconnection is established. If, for example, a storage agent becomes unavailable but is still holding the path to a drive, persistent reserve allows the server to break the storage agent's reservation and access the drive.

AIX operating systems Windows operating systems If persistent reserve is not supported, the server completes a reset of the path to the target device.

HP-UX operating systems Linux operating systems Oracle Solaris operating systems If persistent reserve is not supported, the server is not able to reset the path to the target device.

Support for persistent reservation has the following limitations:

If you are using the Tivoli® Storage Manager device driver, persistent reserve is only supported on some tape drives. See Technote 1470319 for details.
If you are using the IBM® device driver, persistent reserve must be enabled at the device driver level. See the IBM Tape Device Drivers Installation and User's Guide for information about driver configuration.
If you are using a virtual tape library that is emulating a supported drive, it might not support persistent reserve.

The following table describes the three possible configurations for drives that are attached to NAS devices.

Table 1. Configurations for drives that are attached to NAS devices.
Library device configuration	The behavior for persistent reserve
The library device is attached to the Tivoli Storage Manager server, and the tape drives are shared by the server and the NAS device.	Drive reservation preemption is supported when the NAS device supports persistent reserve and it is enabled. For more information about setting persistent reserve, see the documentation for your NAS device.
The library device is attached to the Tivoli Storage Manager server and the tape drives are accessed only from the NAS device.	Drive reservation preemption is not supported. If you enable persistent reserve on the NAS device for these drives and a reservation is set by the NAS device but never cleared, you must use another method to clear the reservation.

Yes: Specifies that drive preemption through persistent reserve or target reset are used. YES is the default for a library that is defined with SHARED=YES.
No: Specifies that drive preemption through persistent reserve or target reset are not used. NO is the default for a library that is defined with SHARED=NO. The RESETDRIVES parameter must be set to YES in a clustered environment when SHARED=NO.

Yes: Specifies that drive preemption through persistent reserve is used. YES is the default for a library that is defined with SHARED=YES.
No: Specifies that drive preemption through persistent reserve is not used. NO is the default for a library that is defined with SHARED=NO.

Note: A library manager will not be able to break a drive reservation if the system that has the drive reservation is not configured to use persistent reservation.

AUTOLabel

Specifies whether the server attempts to automatically label tape volumes. This parameter is optional. The default is YES.

To use this option, you must check in the tapes with CHECKLABEL=BARCODE on the CHECKIN LIBVOLUME command.

Restriction: If you are defining a library that has drives that are attached to a network-attached storage (NAS) device, you must use the LABEL LIBVOLUME command to label the volumes for this library.

No: Specifies that the server does not attempt to label any volumes.
Yes: Specifies that the server labels only unlabeled volumes.
OVERWRITE: Specifies that the server attempts to overwrite an existing label. The server overwrites existing labels only if both the existing label and the bar code label are not already defined in any server storage pool or volume history list.

ACSID (Required)

Specifies the number of this StorageTek library that is assigned by the ACSSA (Automatic Cartridge System System Administrator). This number can be from 0 to 126. Issue QUERY ACS on your system to get the number for your library ID. This parameter is required.

For more information, see your StorageTek documentation.

Example: Define a shared ACSLS library

Define a library named ACSLIB with the library type of ACSLS and an ACSID of 1.

define library acslib libtype=acsls acsid=1 shared=yes