Dell PowerVault TL4000 - Manual (Page 9)

Chapter 2. Library Features
The library includes the following components:
v Operator panel with LCD display and 4 buttons which allows you to monitor the media changer
operations, control robotic operation and change configuration settings
v Bar code scanner, the media changer uses the bar code scanner to read the bar codes from the data
cartridges and report this information as part of the cartridge inventory
v Ethernet port for connecting to a 10/100Base T Ethernet network. This connection allows remote
monitoring of the media changer's operation, performing firmware upgrades and configuring its settings.
This port is also called RMU (Remote Management Unit)
v LVD SCSI or Fibre Channel port, through this port the host sends SCSI commands to both the media
changer and the tape drive
v Serial monitor port, through this port the media changer can be controlled by a console interface
v Cartridge mover which moves cartridges from one location to the other. This element is also called a
medium transfer element
v Storage slots which store cartridges also referred to as storage elements
v Import/Export element allows the user to import or export an cartridge into/from the inventory of the
library
v High Speed / High Density tape drive also referred to as data transfer element
v Magazines, these cartridge carriers are used to hold cartridges in the library. Magazines can be
removed from the library.
Cleaning Cartridge Detection
The media changer will recognize cleaning cartridges. Once a cleaning cartridge is recognized the media
changer will report its special status in the Read Element Status data.
Auto Clean Mode
The media changer supports Auto Clean Mode. Application clients must provide a place within the library
to house the cleaning cartridge. Some libraries may have a designated cleaning slot (DCS) where the
cleaning cartridge may reside. In the absence of a DCS, the application client must reserve a slot (element
address that will not be seen by the host). For details on reserving element addresses, see the
Configuration section of your Users Guide. The cleaning cartridge can then be physically moved into that
″reserved″
element address to be available when called for by Auto Clean.
User Commanded Cleaning
The media changer may be instructed to clean a tape drive by means of OCP or RMU commands. When
the medium changer is instructed to clean a drive, the media changer will load a cleaning cartridge into the
tape drive and return this cartridge to its source element address once the cleaning operation is finished.
When no cleaning cartridge is available in the librarys inventory then the media changer will request the
user to insert a cleaning cartridge. After the cleaning operation is completed the media changer will post a
message to the user about the status of the cleaning operation.
Control Modes
The media changer can receive commands from the following interfaces: SCSI, RMU, OCP and Console.
The default interface for receiving media access commands is the SCSI interface. The media changer
accepts media access SCSI commands when the media changer is on-line. The media changer is off-line
when a user sends a media access command from either the RMU, OCP or Console interface.
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