nStor 4100FS, User Manual

Page: 126 / 168

Chapter 7 - Troubleshooting
Errors
114
Errors
Error events let you know that something related the enclosure, controller, or
disk drives has failed and requires immediate attention. The table below defines
each error event and recommends the action you should take.
SMART EVENT A disk drive informational
exceptions page control (IEPC)
predictive failure message was
received. No actions by the
controller are taken on the drive
for these events. Run diagnostics available from
your operating system on the
affected drive. Replace the drive, if
necessary.
ARRAY OFFLINE More than one drive in a RAID 0
or volume set went down
bringing the array to an offline
state. This array is no longer
accessible by the host. Replace the bad drive and restore
the data from backup.
VOLT/TEMP WARN The analog-to-digital converter
monitored a temperature and/or
voltage in the warning range. Check that the controller’s fan is
running. Check that the ambient
temperature is not too warm. See
“Technical Information” on
page 137.
UNWRITABLE
CACHE The SDRAM cache has battery
backed-up data, and the arrays
assigned to this data are not
present. Either determine which drives are
missing and reinstall them, or
select Yes when asked if you want
to discard this data.
SDRAM CORR ECC A correctable single-bit SDRAM
ECC error occurred. If this error occurs frequently,
replace the memory.
Event Definition Recommended Action
VOLT/TEMP
FAIL The analog-to-digital convertor
monitored a temperature and/or
voltage in the failure range. Check that the enclosure fans are
running. Check that the ambient
temperature is not too warm. See
“Technical Information” on page 137.
ENCLOSURE
FAIL Enclosure specific general purpose
I/O triggered a failure condition. Check the status of the enclosure.
BATTERY
FAILED A failure in the battery pack
and/or charging interface has
been detected. Replace the controller.
DISK CHAN
FAILED An error has occurred in
communicating on the disk
channel. Check the cables on the channel.
SDRAM
UNCORR ECC A noncorrectable multiple-bit
SDRAM ECC error occurred. Reseat the memory. If the problem
continues, replace the memory.
Event Definition Recommended Action
4100FS.book Page 114 Tuesday, July 8, 2003 4:35 PM