6.3 HP StoreAll 9300/9320 Storage Administrator Guide (AW549-96072, June 2013)

Occasionally you may need to manage the segments manually:
• Migrate segments. This operation transfers ownership of segments to other servers. For example,
if a server is overloaded or unavailable, you can transfer its segments to another server that
can see the same storage.
• Rebalance segments. This operation redistributes files across segments and can be used if
certain segments are filling up and affecting file system performance. See “Maintaining file
systems” in the for more information.
• Evacuate segments. This operation moves the data in a segment to another segment. It is
typically used before removing storage from the cluster.
Migrating segments
Segment migration transfers segment ownership but it does not move segments from their physical
locations in the storage system. Segment ownership is recorded on the physical segment itself, and
the ownership data is part of the metadata that the Fusion Manager distributes to file serving nodes
and StoreAll clients so that they can locate segments.
To migrate segments on the GUI, select the file system on the Filesystems panel, select Segments
from the lower Navigator, and then click Ownership/Migration on the Segments panel to open
the Segment Ownership Migration Wizard.
The Change Ownership dialog box reports the status of the servers in the cluster and lists the
segments owned by each server. In the Segment Properties section of the dialog box, select the
segment whose ownership you are transferring, and click Change Owner.
114 Maintaining the system