all 15 disks on MD1000 (PERC H800 adapter) showing yellow caution sign for no reason evident to me

Four of the disks show "failure predicted=yes" (see Figure 1 below) so I understand why they have caution signs;  but the detail on the rest of the drives shows "failure predicted=mo" (see, for example, figure 2 below) so I don't understand why they have caution signs.  The disk in figure 2 also happens to be the only member of that virtual drive, presently, so I know of no reason to suspect that one of the four "failure predicted" drives is somehow affecting its status.

Figure 3 below shows all the physical drives with their accompanying caution signs.  Data does seem to be accessible and writable on these drives.

Has anyone an idea on what I need to do to get rid of the caution signs on the 11 drives that do not show "failure predicted" status?  (PS:  I highly suspect the reliability of the "failure predicted" status since they all happened almost, if not, at the same time.)

Dan J

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Figure 1:

Figure 2:

Figure 3