Note: The Remove DCS No is only available on libraries with the DCS feature.
The following library configuration items are in this menu:
v Mode:
Configure
General
Active Slots Active Slots
Autoload Mode
Loop
Auto Clean
Auto Clean Library
Settings If 1 Logical
Library
If 2 or more Logical Libraries
Autoload
Loop Mode
1 2
Sequential Sequential
Random Random
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Logical Lib Settings
3 4
I/O Station(s) enabled
Remove DCS No
Host Label Length I/O Station(s)
enabled
Host Label Length
Figure 5-14. Configure: Library menu
– Random: In random mode, the library allows the server's (host's) application software to select any data cartridge in any order.
– Sequential: In sequential mode, the library's firmware predefines the selection of the cartridges. After initialization, the firmware causes the library to select the first available cartridge found (counting from the I/O Station through slot 23) for loading into the drive.
Important: If a Logical Library in Sequential Mode contains more than one drive, only the first drive in the Logical Library will be utilized.
- Autoload: Sequential mode with autoload mode ON loads the first available cartridge (slot with the lowest numerical value that contains a cartridge) automatically if the library powers ON with an empty drive.
- Loop: Sequential mode with loop mode ON loads the cartridge in the lowest numerical slot after the cartridge in the highest numerical slot has been filled and sent back to its home slot. This allows endless backup operations without user interaction.
- Starting Sequential Mode v Autoload Option:
– If the Autoload option is set to ON (Configure → Library Settings → Autoload), the accessor will load the first cartridge (cartridge located in the slot with the lowest numeric value) found in the storage inventory area into the drive upon power ON of the library. If the library powers on with a cartridge already in the drive, sequential mode will start with that cartridge unless the host issues a rewind and unload command to the drive. In that case, the next cartridge in sequence will be loaded into the drive.
– If the Autoload Option if OFF, sequential mode must be started by selecting the Move Cartridges option (Control → Move Cartridges) to load the first cartridge (or any cartridge) into the drive. Whatever cartridge is loaded into the drive, that is where the sequence starts from. For example, if a cartridge from the fifth lowest numeric storage slot containing a cartridge is loaded using the Move Cartridges option, after the host issues a rewind/unload command, the next cartridge loaded will be the cartridge from the next higher numeric slot. Cartridges need not be in contiguous slots.
v Loop Option:
If the Loop option is set to ON (Configure → Library Settings → → Loop), when the last cartridge (cartridge in the highest numeric slot) is
unloaded and placed back into storage, the accessor will immediately start over again loading the first cartridge into the drive.
- Stopping Sequential Mode: To stop sequential mode, use the Move Cartridges option from the Control menu (Control → Move Cartridges) to unload the drive. the next sequential cartridge will NOT be loaded. To restart sequential mode, use the same Control menu command to load a cartridge. The loading sequence will resume from that numeric slot in the cartridge inventory.
v Active Slots- the number of active slots in each logical library.
Note: Slots can be reserved so that they are invisible to the host. It may be necessary to set the number of Active Slots to match the number of slots that are available to the ISV software. Reserved slots are created by reducing the number of active slots.
v Auto Clean- Use this menu item to enable the Auto Clean function. All cleaning cartridges must have "CLNxxxLx" as part of the bar code.
With Auto Clean disabled, the cleaning tape can be stored in any data slot if you wish to manually clean the drives. This is not recommended.
With Auto Clean disabled, the cleaning tape can be stored in any data slot if it was put there under Backup Application control. In other words, the Backup Application is controlling the cleaning of the tape drives and the cleaning tape would be imported into this library under its control.
Note: The universal cleaning cartridge has a bar code CLNUxxLx. This cleaning cartridge is used to clean all LTO generation tape drives.
For Auto Clean to function, the following criteria must be met:
– On 4U libraries with library firmware of .80 or lower that still contain a Dedicated Cleaning Slot (DCS), or 4U libraries with library firmware higher than 1.95 that chose to retain the DCS in their library, a CLN cartridge must be present in that slot.
– On libraries that don't have a DCS, a storage slot must be reserved (RSVD) by reducing the active slot count by one.
– A cleaning cartridge (CLNxxxLx) must be placed or moved to the reserved slot.
– Auto Clean must be enabled.
Note: Cleaning cartridges must be replaced after 50 cleanings. The Web User Interface inventory screen will show the number of times the media has been loaded, not the number of cleaning sessions remaining. Subtract this number from 50 to determine the number of cleanings remaining.
v I/O Station(s) enabled- The I/O Station(s) can be enabled (the default), or disabled so the stations can be utilized as storage slots.
v Remove DCS- If the DCS has been removed, it cannot be reinstated. This option will no longer appear in the Operator Control Panel.
v Host Label Length- The Host Label Length is related to the Bar Code Labels appearing on the media being used. The default value is 8, but 6 can also be chosen.