HT2559 Data scrubbing / patrol read with RAID built by Disk Utility

I have used Disk Utility to make a RAID 1 array from two commercial hard drives. The RAID is to hold my music and movie files. While the data redundancy was one reason to make the RAID, I also hoped that the Mac would perform "data scrubbing" of the RAID to keep the files from degrading over time. Does the OS X RAID controller perform this data scrubbing, and does it do so automatically, or is there an app for that? Thanks!

Always have two backups or sets of data. If you are going to erase one set... then for a stretch of time you only have the one good copy I take it? I guess the originals would be one good set, so you are safe.
You realize you can unmount drives connected on Sonnet controllers, right? No need to shutdown your computer, just the enclosure(s). Couldn't tell if that is what you said anyway.
I don't use internal drives for backups, just external SATA and at least one on FireWire. One backup is always off line at any time. And enough juice on the UPS to carry me through what I am doing or can safely get past.
I just read one of AMUG/michael's post on a controller that supports hardware RAID and ability to map out bad sectors "on the fly" which is about the only time I worry about a failure. That, and UPS, and beware of OS patches and updates (one security update affected SeriTek on some G4/5s).
I'd say you've done a lot for being new to RAID - and using the same make/model/revision for all your drives helps a lot. Buying together, and having at least one 'spare' if one fails, is also good insurance.
Some poeple use 4 drives in a 5-drive enclosure. For heat and ventilation and because sometimes it might be ideal for performance. Never used or seen the 500P up close but I suspect it is well built.
You could build a 2nd 500P and either increase performance or capacity or use 2nd as backup. If you don't need to copy 1GB per minute, then a concatenated RAID fills drive A before putting data on B and is more secure than a stripped RAID but still shows up as one large volume.

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