Battery backed raid card

Hi,
I've been trying to determine whether there are any hardware raid cards with battery backed cache that are supported by Solaris 10 and offer online management and diagnostic utilities. The LSI Logic 320-2x (which is repackaged by Sun) is now supported by the lsimega driver, but there is little to no documentation for it (+broken links on sun.com).
Cards like this usually offer both BIOS-based configuration as well as online utilities. Some cards and the corresponding drivers may be managed using raidctl, but I cannot determine which cards and drivers.
If any body has links to documentation or personal experience that will enlighten me, it would be much appreciated.
Regards,
Michael

I was going to respond with my personal view, but this wikipedia page describes it adequately.
From http://en.wikipedia.org/wiki/Redundant_array_of_independent_disks:
"With a software implementation, the operating system manages the disks of the array through the normal drive controller (IDE, SCSI, Fibre Channel or any other). With present CPU speeds, software RAID can be faster than hardware RAID, though at the cost of using CPU power which might be best used for other tasks. One major exception is where the hardware implementation of RAID incorporates a battery backed-up write cache and an application, like a database server. In this case, the hardware RAID implementation flushes the write cache to a secure storage to preserve data at a known point if there is a crash. The hardware approach is faster and limited instead by RAM speeds, the amount of cache and how fast it can flush the cache to disk. For this reason, battery-backed caching disk controllers are often recommended for high transaction rate database servers. In the same situation, the software solution is limited to no more flushes than the number of rotations or seeks per second of the drives. Another disadvantage of a pure software RAID is that, depending on the disk that fails and the boot arrangements in use, the computer may not be able to be rebooted until the array has been rebuilt."

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