HP D2D .HP D2D Backup System user guide (EH985-90907, March 2011) - Page 20

Deduplication, No of Barcode Characters, Barcode Justification, iSCSI Initiator Name

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Deduplication: Port: No of Barcode Characters: Barcode Justification: iSCSI Initiator Name: (iSCSI devices only) Data deduplication is enabled by default for the library device. It is not possible to disable deduplication on any HP StoreOnce G2 Backup System. This identifies the network port on the HP StoreOnce Backup System to which the device is connected. This will be the port used for the Library device as well as the default port for embedded tape drives. The choices in the drop-down menu depend upon your network configuration. There are up to two iSCSI ports (this depends upon your network mode), and two FC ports if you have the FC model. FC users may choose to connect the device to an iSCSI or a FC port. It is possible to change the tape device ports after creation. The HP StoreOnce Backup System generates barcodes automatically for cartridges. This option allows you to select whether the barcodes should have six or eight characters. When the user selects 6-character barcodes this is not reflected on the Web Management Interface, which will still show 8-character barcodes. However, when a backup application runs an inventory command it will only see 6-character barcodes. This option allows you to specify which six characters are reported to the backup application when using 6-character barcodes. The six characters that are reported to the backup application are determined by whether the justify option is set to left or right. Setting it to left justify will mean that the first 6 characters of the barcode will be reported to the backup application, right justify will report the last 6 characters. Note that using left justify may result in the backup application seeing barcodes that appear to be duplicates. This is the Initiator Node Name of the host that will back up to this device. It is provided automatically for the default library that is created when you run the Installation wizard on a host for a first time. But you must enter it manually if you are creating a new device on this page. If you are using the Microsoft iSCSI Initiator, you can find the name by running the iSCSI Initiator on the host and copying the Initiator Node Name from the General tab. Table 4 Device tabs continued (lower half of the page) Interface Information tab Device Name Device Serial Number This is the device name, such as Medium Changer or Drive 1. There will be an entry for each drive that is appropriate for the selected emulation type. This is a unique serial number for the device. It is generated automatically by the HPStoreOnce Backup System and cannot be edited. 20 Virtual Tape Devices

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Data deduplication is enabled by default for the library device. It is not
possible to disable deduplication on any HP StoreOnce G2 Backup System.
Deduplication:
This identifies the network port on the HP StoreOnce Backup System to which
the device is connected. This will be the port used for the Library device as
well as the default port for embedded tape drives. The choices in the
drop-down menu depend upon your network configuration. There are up to
two iSCSI ports (this depends upon your network mode), and two FC ports
if you have the FC model. FC users may choose to connect the device to an
iSCSI or a FC port. It is possible to change the tape device ports after
creation.
Port:
The HP StoreOnce Backup System generates barcodes automatically for
cartridges. This option allows you to select whether the barcodes should
have six or eight characters. When the user selects 6
–
character barcodes
this is not reflected on the Web Management Interface, which will still show
8
–
character barcodes. However, when a backup application runs an invent-
ory command it will only see 6
–
character barcodes.
No of Barcode Characters:
This option allows you to specify which six characters are reported to the
backup application when using 6
–
character barcodes. The six characters
that are reported to the backup application are determined by whether the
justify option is set to left or right. Setting it to left justify will mean that the
first 6 characters of the barcode will be reported to the backup application,
right justify will report the last 6 characters. Note that using left justify may
result in the backup application seeing barcodes that appear to be duplicates.
Barcode Justification:
This is the Initiator Node Name of the host that will back up to this device.
It is provided automatically for the default library that is created when you
run the Installation wizard on a host for a first time. But you must enter it
manually if you are creating a new device on this page. If you are using the
Microsoft iSCSI Initiator, you can find the name by running the iSCSI Initiator
on the host and copying the Initiator Node Name from the General tab.
iSCSI Initiator Name:
(iSCSI
devices only)
Table 4 Device tabs continued (lower half of the page)
Interface Information tab
This is the device name, such as Medium Changer or Drive 1. There will be
an entry for each drive that is appropriate for the selected emulation type.
Device Name
This is a unique serial number for the device. It is generated automatically
by the HPStoreOnce Backup System and cannot be edited.
Device Serial Number
Virtual Tape Devices
20