User Guide

198 Spheras Storage Director Installation and User Guide
• If expanding a logical drive, make sure that the logical drive and physical drives can support the expansion. See 5.6
Expanding a Logical Drive on page 100 for more information.
7.11.4 Repair a Controller
To repair a controller, first see 6.2.2 Viewing Event Details on page 111. The event details tell you the event ID and give
you a description of the event that caused the controller to need repair. Using this information, take measures to fix the
problem:
• Typically, controller problems can be traced to a problem with the BBU, a logical drive, an array, a physical drive,
or an enclosure. In the navigation area, expand the problem controller’s tree and view its components in the
Contents area. Select a component that is in a critical state, and view the repair action.
• Check all generated events; there may be more than one problem.
• Replace parts as needed.
Remember that some events are the result of other events; one event can cause a cascade of others if left unfixed. For
example, a problem with a hard drive causes a warning event, “Hard drive error found”, which could lead to a
consistency check error event, “Consistency check on logical drive error”, which could lead to a serious event, “A hard
disk has failed”, which could lead to a critical event, “A logical drive has failed.”
7.11.5 Repair a BBU
Events that may cause a BBU to need repair:
• Power supply failure
• BBU power low
• BBU recondition needed
• BBU has failed
To repair a BBU, first see 6.2.2 Viewing Event Details on page 111. The event details tell you the event ID and give you
a description of the event that caused the BBU to need repair. Using this information, take measures to fix the problem:
• If the BBU needs to be reconditioned or power is low, recondition the BBU. Remember that the battery must be
fully reconditioned before being used. If a BBU recondition has been canceled in the past, the BBU may not have
enough power to sustain the write-back cache.
• Check, all cable connections, to be sure none is disconnected or broken.
• Replace the BBU as needed.
7.11.6 Repair an Enclosure
Events that may cause an enclosure to need repair:
• Fan failure
• Power supply failure
• Over temperature limit surpassed
• Enclosure access is critical or degraded
• BBU power low or BBU recondition needed or BBU has failed.