PERC 5/E changing controller write policy, is that a bad sign?

The last couple days I've noticed chunks of events like this showing up in /var/log/messages.  Are they indicative of a failure/problem?  Never noticed them before on this server.  Wonder if my PERC or PV220S is dying.

Jan 13 05:18:06 ServerName Server Administrator: Storage Service EventID: 2188  The controller write policy has been changed to Write Through.:  Battery 0 Controller 1
Jan 13 05:18:06 ServerName Server Administrator: Storage Service EventID: 2199  The virtual disk cache policy has changed.:  Virtual Disk 0 (data01) Controller 1 (PERC 5/E Adapter)
Jan 13 05:18:07 ServerName Server Administrator: Storage Service EventID: 2199  The virtual disk cache policy has changed.:  Virtual Disk 1 (data03) Controller 1 (PERC 5/E Adapter)
Jan 13 05:35:29 ServerName Server Administrator: Storage Service EventID: 2189  The controller write policy has been changed to Write Back.:  Battery 0 Controller 1