Dell PowerVault DP600 - Manual (Page 113)

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If you add or remove tapes to the tape library using Unlock door or Add tape, DPM will
automatically inventory the library. If you add or remove tapes to the tape library without
using Unlock door or Add tape, you must use the Inventory library action to update the
information in DPM Administrator Console.
Adding or removing a tape from a stand-alone tape drive is accomplished manually according to
the hardware instructions, without using DPM Administrator Console.
How to Identify Tapes
DPM identifies tapes by using the tape label. Tape labels for tapes used for long-term protection
are assigned when you create a protection group. DPM assigns a default tape label in this
format: DPM - <ProtectionGroupName> - long-term tape <number>. You can modify this label
in the Create New Protection Group Wizard.
Each tape includes an on-media identifier (OMID), which is written to the start of the tape. DPM
reads the tape OMID before performing an operation that uses the tape, to ensure that the tape is
correct.
If your tape library includes a bar code reader, DPM displays the bar code of each tape in DPM
Administrator Console. If the bar code on a tape starts with "CLN", such as bar code
CLN0000812, DPM identifies the tape as a cleaning tape after a fast inventory.
Identifying Unknown Tapes
When a tape containing data is added to the tape library and the tape label displays as
"Unknown," you can use DPM to identify the tape.
When DPM identifies the tape, it reads the tape header and updates the tape label as follows:
• A tape created by the DPM server displays the assigned tape label.
• A tape created by another DPM server displays Imported as the tape label.
• A tape that contains content that was not created by DPM displays Unrecognized as the
tape label.
• A tape that has conflicting identification information, such as the bar code or the on-media
identifier, DPM displays Suspect as the tape label.
To identify unrecognized tapes
1. In DPM Administrator Console, click Management on the navigation bar, and then click
the Libraries tab.
2. In the display pane, expand the tape library or stand-alone tape drive and select the
unrecognized tape.
3. In the Actions pane, click Identify unknown tape.
4. In DPM Administrator Console, click Management on the navigation bar.
5. On the Libraries tab, select the unrecognized tape.
6. In the Actions pane, click Identify unknown tape.