Using The Partitions Defragmentation Tool - Quantum Scalar i6000 User Manual

Chapter 15: Maintaining Your Library
Maintenance Actions
Using the Partitions
Defragmentation Tool
674
For information about how to interpret and save test logs, see
Verification Test Logs
Typically, partitions in a library are physically contiguous. That is, all tape
slots that belong to a partition are adjacent to one another in the
library. However, if a partition is enlarged, or if an expansion module is
added to a library, it is possible that some or all partitions in the library
will no longer be physically contiguous. In this case, the slots that
belong to a partition are not all adjacent to one other, and the partition
is fragmented. Fragmentation can make bulk loading media more
difficult.
Defragmenting partitions reassigns slots in the library so that all slots in
each partition are physically contiguous with one another. In addition,
media is moved as needed to make sure it resides in the correct
partition. In the process, tapes are first moved from their old location to
the I/E station, and then are moved to their new location in the library.
Note: Only partitions that contain an I/E station can be
defragmented. Also, at least one magazine in the
I/E station must be empty. Partitions that do not contain an I/E
station cannot be defragmented and will be skipped.
Caution: Depending on the size of the library, defragmenting
partitions can be a time-consuming process.
Defragmenting Partitions
After enlarging a partition or adding an expansion module to the library,
check for partition fragmentation, and then defragment partitions if
necessary.
1 Log on as an administrator.
2 Make sure that you are viewing the physical library. From the View
menu, click the name of the physical library.
3 Click Tools > Partitions Defragmentation. The Partitions
Defragmentation dialog box appears. This dialog box shows a
graphical representation of the tape magazines in the library.
on page 644.
Quantum Scalar i6000 User's Guide