Impediment RS-1600-X24 User Manual page 97

Table 7–4 Warning events (Continued)
Event Definition
OTHER WWN The host Fibre Channel World Wide
UNKNOWN Names (node and port) previously
presented by the other SM module
(which is currently offline) in this
system are unknown. This event has
two possible causes:
The online SM module reporting the
event was replaced or moved while
the system was powered off.
The online SM module had its flash
configuration cleared (this is where the
previously used WWNs are stored).
PREV WWN The host Fibre Channel World Wide
UNKNOWN Names (node and port) previously
presented by this Storage Manager
module in this system are unknown.
This event has two possible causes:
• One or both SM modules in a
• One or both SM modules have
REPLACE The battery is approaching its four-
BATTERY year life span.
SDRAM CORR A correctable single-bit cache memory
ECC ECC error occurred.
SPARE The drive still contains metadata that
UNUSABLE must be cleared.
SMART EVENT A disk drive informational exceptions
page control (IEPC) predictive failure
message was received. No actions by
the X24 Subsystem are taken on the
drive for these events.
have been replaced or moved
while the system was powered
off.
had their flash configuration
cleared (this is where the
previously used WWNs are
stored).
X24 Troubleshooting
Recommended Action
The online Storage Manager module
recovers from this situation by
fabricating a WWN for the other SM
module based on its own serial
number. If you see this event, then you
need to verify the WWN information for
the other SM module on all hosts that
access it.
This SM module recovers from this
situation by using WWNs based on its
own serial number. If you see this
event, then you need to verify the
WWN information for this SM module
on all hosts that access it.
Replace the battery, see section
7.12.5 on page 74.
Contact your Supplier.
Clear the metadata from the spare
drive. See F.1.2, "Clearing Metadata
from a Drive", on page 177.
Run diagnostics available from your
operating system on the affected drive.
Replace the drive, if necessary.
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