Data ONTAP 7 and earlier
Check Active IQ if this impacts your systems
Multiple disks show as
prefail in the output of
sysconfig -r. The
sysconfig -r output may resemble something like this on multiple disks:
data 2a.18 2a 1 2 FC:A - FCAL 10000 136000/278528000 137104/280790184 (prefail)
The system continues to serve data on these prefailed disks, but are copied to spare disks as spares become available. When the number of prefailed disks exceeds the number of available spares, the spare disk pool will be depleted and the system will begin logging Spares low warnings.