Use the DLT device class when you are using DLT tape devices.
To issue this command, you must have system privilege or unrestricted storage privilege.
>>-UPDate DEVclass--device_class_name---------------------------> >--+--------------------------+--+-------------------------+----> '-LIBRary--=--library_name-' '-FORMAT--=--+-DRIVE----+-' +-DLT1-----+ +-DLT1C----+ +-DLT10----+ +-DLT10C---+ +-DLT15----+ +-DLT15C---+ +-DLT20----+ +-DLT20C---+ +-DLT35----+ +-DLT35C---+ +-DLT40----+ +-DLT40C---+ +-DLT2-----+ +-DLT2C----+ +-DLT4-----+ +-DLT4C----+ +-SDLT-----+ +-SDLTC----+ +-SDLT320--+ +-SDLT320C-+ +-SDLT600--+ +-SDLT600C-+ +-DLTS4----+ '-DLTS4C---' >--+----------------------+-------------------------------------> '-ESTCAPacity--=--size-' >--+-----------------------------------+------------------------> '-PREFIX--=--+-ADSM---------------+-' '-tape_volume_prefix-' >--+----------------------------+--+-----------------------+----> '-MOUNTRetention--=--minutes-' '-MOUNTWait--=--minutes-' >--+---------------------------+------------------------------->< '-MOUNTLimit--=--+-DRIVES-+-' +-number-+ '-0------'
Format | Estimated Capacity | Description |
---|---|---|
DRIVE | – | The server selects the highest format that
is supported by the drive on which a volume is mounted. Attention: Avoid specifying DRIVE when a mixture of drives is
used within the same library. For example, do not use this option
for a library that contains some drives that support recording formats
superior to other drives.
|
DLT1 | 40.0 GB | Uncompressed format, using only CompacTape III or CompacTape IV cartridges |
DLT1C | See note 1. 80.0 GB |
Compressed format, using only CompacTape III and CompacTape IV cartridges |
DLT10 | 10.0 GB | Uncompressed format, using only CompacTape III or CompacTape IV cartridges |
DLT10C | See note 1. 20.0 GB |
Compressed format, using only CompacTape III and CompacTape IV cartridges |
DLT15 | 15.0 GB | Uncompressed format, using only CompacTape
IIIxt or CompacTape IV cartridges (not CompacTape III) Note: Valid
with DLT2000XT, DLT4000, and DLT7000 drives
|
DLT15C | See note 1. 30.0 GB |
Compressed format, using only CompacTape
IIIxt or CompacTape IV cartridges (not CompacTape III) Valid with DLT2000XT, DLT4000, and DLT7000 drives |
DLT20 | 20.0 GB | Uncompressed format, using only CompacTape
IV cartridges Valid with DLT4000, DLT7000, and DLT8000 drives |
DLT20C | See note 1. 40.0 GB |
Compressed format, using only CompacTape
IV cartridges Valid with DLT4000, DLT7000, and DLT8000 drives |
DLT35 | 35.0 GB | Uncompressed format, using only CompacTape
IV cartridges Valid with DLT7000 and DLT8000 drives |
DLT35C | See note 1. 70.0 GB |
Compressed format, using only CompacTape
IV cartridges Valid with DLT7000 and DLT8000 drives |
DLT40 | 40.0 GB | Uncompressed format, using CompacTape IV
cartridges Valid with a DLT8000 drive |
DLT40C | See note 1. 80.0 GB |
Compressed format, using CompacTape IV cartridges Valid with a DLT8000 drive |
DLT2 | 80.0 GB | Uncompressed format, using Quantum DLT tape VS1 media |
DLT2C | See note 1. 160.0 GB |
Compressed format, using Quantum DLT tape VS1 media |
DLT4 | 160.0 GB | Uncompressed format, using Quantum DLTtape VS1 cartridges. Valid with Quantum DLT-V4 drive |
DLT4C | See note 1. 320.0 GB |
Compressed format, using Quantum DLTtape VS1 cartridges. Valid with Quantum DLT-V4 drive |
SDLT See note 2. |
100.0 GB | Uncompressed format, using Super DLT Tape
1 cartridges Valid with a Super DLT drive |
SDLTC See note 2. |
See note 1. 200.0 GB |
Compressed format, using Super DLT Tape
1 cartridges Valid with a Super DLT drive |
SDLT320 See note 2. |
160.0 GB | Uncompressed format, using Quantum SDLT
I media Valid with a Super DLT drive |
SDLT320C See note 2. |
See note 1. 320.0 GB |
Compressed format, using Quantum SDLT I
media Valid with a Super DLT drive |
SDLT600 | 300.0 GB | Uncompressed format, using SuperDLTtape-II
media Valid with a Super DLT drive |
SDLT600C | See note 1. 600.0 GB |
Compressed format, using SuperDLTtape-II
media Valid with a Super DLT drive |
DLTS4 | 800 GB | Uncompressed format, using Quantum DLT S4 media. Valid with a DLT-S4 drive |
DLTS4C | See note 1. 1.6 TB |
Compressed format, using Quantum DLT S4 media. Valid with a DLT-S4 drive |
Note:
|
You must specify this value as an integer followed by K (kilobytes), M (megabytes), G (gigabytes), or T (terabytes). For example, ESTCAPACITY=5M specifies that the estimated capacity for a volume in this device class is 5 MB.
The smallest value that is allowed is 1 MB (that is, ESTCAPACITY=1M). To force the IBM Tivoli Storage Manager server to determine the estimated capacity for the volumes that are assigned to this device class, specify ESTCAPACITY="".
For more information about estimated capacities, see Table 1.
If you previously established a media label naming convention that supports your current management system, consider the use of a volume prefix that conforms to your naming conventions.
This parameter can improve response time for sequential access media mounts by leaving previously mounted volumes online. However, for EXTERNAL library types (that is, a library that is managed by an external media management system), set this parameter to a low value (for example, two minutes) to enhance device sharing between applications.
If you plan to use the simultaneous-write function, ensure that sufficient drives are available for the write operation. If the number of drives needed for a simultaneous-write operation is greater than the value of the MOUNTLIMIT parameter for a device class, the transaction fails.